Useful Tools

A free, open-source Mac utility that adds blur and soft dark borders to the movement of a MacBook lid.

A Spanish-language wildfire monitor for Andalusia that combines official incident updates, satellite evidence, weather, nearby-fire context, and a local exposure index.

A bilingual tracker for public Codex quota-reset announcements, timing, history, and an experimental prediction.

A shareable world clock and meeting planner that shows local time, daylight, date, and changing time differences across 112 cities.

An iOS camera that applies cyberpunk, glitch, thermal, pixel, and audio-reactive effects live while you shoot.

A standalone Windows utility that diagnoses why files cannot be deleted, moved, or renamed, then recommends a safer way to resolve the blockage.

A no-code browser tool for training custom webcam detectors and connecting their alerts to speech, notifications, Slack, Discord, email, or webhooks.

Masar combines an online storefront with sales tracking, local transfer payments, landmark-based addresses, delivery agents, and a lightweight mode for weak networks.

A motorcycle route planner that compares scenic, twisty, and fast routes using road geometry rather than driving time alone.

A free 3D simulator turns a follower count into a walkable crowd across a modeled Seoul cityscape.

A free browser octapad with eight touch or keyboard-triggered drum pads, sound kits, effects, looping, sequencing, and recording.

Patchlamp lets site owners text requests such as “add Friday’s show” or “mark the burger sold out,” then applies and verifies the change.

A free Chrome extension places a named pet inside Canvas, rewarding assignment streaks with treats, coins, clothing, and new animals.

A browser-based 3D shoulder anatomy atlas for showing injuries, movement, examination maneuvers, and surgical repair steps during clinical conversations.

A 3D globe for exploring 59 layers of live French public data, including aircraft, vessels, weather, news, radio, fires, earthquakes, and space missions.

A playful browser language lab with focused tools for Russian motion verbs, expressions, and word stress.

An Android alarm app with no snooze button, requiring a short physical or mental mission before its hungry cat will stop ringing.

A local-first design studio that lets coding agents turn plain-language briefs into editable folders of apps, 3D scenes, slides, brand kits, and other projects.

An interactive live-coding workspace for making algorithmic music and GLSL visuals together.

A free browser puzzle asks players to place suspect cats on a room grid and identify which one ate the missing snack.

A pre-customer readiness check that inspects an app’s public-facing flows for broken purchases, confusing onboarding, trust gaps, and other costly leaks.

A browser-based push-up competition uses your phone camera to count repetitions, grade form, and create challenges between friends or strangers.

Email hi@askpenpal.com from any device and receive an AI reply without an account, app, or password.

A free collection of more than 50 browser-based tools for testing speakers, headphones, microphones, hearing, stereo imaging, and audio signals.

A browser-only converter that turns bank-statement PDFs into CSV, Excel, or QBO files while re-adding the transactions against the statement’s own totals.

A browser-based generator turns seeded physics simulations into vertical, square, or landscape clips for TikTok, Reels, and Shorts.

A parenting app turns recurring chores into signed agreements with tasks, deadlines, reminders, rewards, and clearly stated consequences.

A searchable reference that compares 215 battery designations by physical dimensions, voltage, chemistry, capacity, fit, and replacement options.

A browser-based tool that converts photos or typed text into editable Perler-compatible bead patterns.

An offline-ready tool for selecting a benchplate, calculating a machine offset, recording the setting, and consulting a project map.

Scan a German official letter and get an explanation, a stated deadline, suggested next steps, and a draft reply in your language.

A gravity-riding telemetry app that records jumps, corners, control and repeated-trail performance from a handlebar-mounted Apple Watch.

An iPhone strength-training log that pre-fills sets, runs rest timers on the Lock Screen, and grows a pixel companion from recorded work.

An Android dashboard that sits beside a navigation app to show GPS speed, UK speed limits, engine data, fault codes, and automatically logged journeys.

A free browser game where you draft ten abilities from real NBA player profiles, guide a fictional career through 82-game seasons, and pursue a championship and Hall of Fame score.

A daily service that calls a court-ordered drug-testing hotline, checks the recorded color or group number, and texts subscribers whether they need to test.

A cannabis-cooking site with dosing, infusion, decarboxylation, batch-scaling, and cost-per-milligram calculators, plus recipes that adjust to the potency of your own oil.

A Japanese simulator compares the real ownership cost and estimated cumulative CO2 emissions of multiple cars.

A sourced archive tracking Codex reset announcements, their confirmation status, affected plans, and practical follow-up guidance.

A free, no-login tracker of Codex usage resets, reset credits, reset history, and estimated future reset windows.

A cooking app uses a globe-based randomizer to choose dishes from 196 countries, then supplies recipes and a shopping list.

Coverton offers 77 browser-based tools for converting, merging, compressing, and reshaping images, PDFs, documents, data, archives, and media.

A multilingual character-name generator that forges first names and meaningful surnames around race, class, gender, profession, faction, and language.

A two-tap food and symptom diary for people with Crohn’s disease, ulcerative colitis, or IBS.

A daily strategy guide for Krillion’s seven prompts, pairing rare answers with spelling speed and projected scores.

AMS records inspections, defects, measurements and risk assessments for mining, smelting and process plants, then connects findings back to an existing maintenance system.

A forthcoming Android app combines a shuffled tarot draw, a reflection grounded in curated sources, and an on-device diary that surfaces recurring themes.

A New York and New Jersey monitoring tool that checks the state-held address for companies and watches specified court sources for new cases.

A Windows application that indexes folders of receipts, invoices, bank statements, photos, scans, and Office files locally, then makes them searchable and answerable.

A desktop ARAM analyzer compares the champions in your live lobby and recommends stronger five-champion compositions.

A browser tool that aligns two runners’ GPX tracks on 3D terrain, compares their progress, and exports a vertical replay video.

A solar-eclipse planning toolkit that calculates exact local circumstances and compares potential viewing destinations.

An iPhone camera app that previews film emulations live, captures RAW alongside developed photos, and offers 35 film looks.

A free macOS menu-bar utility that makes a quick Enter press insert a line break and a longer press send the message.

An iPhone tool captures roof horizons, models annual sun paths, and exports shade data for PVsyst, HelioScope, and PV*SOL.

A browser-based crossword builder with scored word lists, grid-aware autofill, clue management, and export to .puz, .ipuz, and .jpz.

An iPhone app for finding outdoor basketball courts, verifying their conditions, organizing runs, and tracking player level and reliability.

Kohlrabi is a free, offline-capable workout tracker for logging sets, building programs, sharing workouts, and choosing the next training target.

A team-controlled browser that grants temporary, allowlisted access through single-use codes, then wipes the session when it ends.

A browser-based toolkit for turning videos and image sequences into GIFs, MP4s, WebM files, and packaged frame sequences.

A picture-based shopping planner for Sierra Leone households that combines market prices, budgeting, weekly planning, and directions to nearby markets.

A Pokémon card-grading calculator estimates the break-even grade, all-in submission cost, and odds of making money after grading and selling fees.

A browser-based tool that adds a precisely matched grid to reference photos and prepares corresponding overlays, blank grids, and print-ready files.

A free browser-based guitar toolkit with a local microphone tuner, metronome, chord and scale tools, ear training, a circle of fifths, and a tab-sync workspace.

A free, no-account wake-up session that combines rising sound, screen light, optional vibration, a task, and a later check-in.

A forthcoming marine-navigation app for US coastal waters, rivers, and lakes, with draft-aware routing, merged depth data, tides, weather, AIS, and offline chart packs.

A private reflection tool that helps people examine what they share with a particular person or audience.

A searchable database linking Japanese subsidies, grant recipients, companies, municipalities, support institutions, and public records through corporate numbers.

A job-search tool scores current postings against a candidate profile, showing the fit, verdict, reasoning, and rejection gates.

A free, open-source Chrome extension that hides AI-generated videos from YouTube feeds, search, recommendations, and Shorts.

A family-history platform where relatives maintain linked branches, merge existing GEDCOM trees reversibly, and keep living people private.

A gentle browser puzzle game where children drag picture pieces into place, with adjustable difficulty and support for personal photos.

A searchable directory of 571 martial-arts schools across New York State and Southern Ontario, with schedules, open-mat information, disciplines, visitor policies, and booking links.

A desktop audio-reactive visual engine that drives live or rendered visuals from songs, stems, microphones, video, and 3D assets.

A travel dining tool that translates photographed menus, checks dishes against allergies and diets, and helps users communicate with waiters.

A browser-based system for creating, packaging, and reading layered comics with animation, sound, interactive panels, and timed story events.

A planned cycle-tracking app that combines menstrual records with daily worship guidance for Muslim women following the Shafi'i school.

An iPhone app records or imports meetings, transcribes them on-device, and produces notes and summaries without uploading the audio.

A public African art index built from auction and gallery sales, with regional, medium-specific, and artist-level market signals.

A free suite of 35 calculators for math, finance, grades, paychecks, dates, graphing, health, and everyday decisions.

An open-data dashboard comparing 77 Thai provinces and 928 districts for land, climate risk, water, soil, air quality, price, economy, and tourism.

A citywide chess leaderboard that combines players and games from Central Florida clubs.

Patentshell turns a USPTO Office Action PDF into a formatted Word shell for an attorney’s response.

A free suite of focused WordPress and WooCommerce plugins for tickets, food-product data, expiry batches, cron monitoring, and table bookings.

A free, open-source desktop app for planning and optimising Path of Exile 1 and 2 builds.

A stormwater compliance tool that watches rainfall at permitted sites and alerts inspectors when a permit threshold is crossed.

A local-first tool for arranging artwork in rooms, accounting for walls and obstructions, and exporting installation measurements.

A Pokémon VGC toolkit for building Regulation M-C sets, calculating damage, comparing speed tiers, finding KOs, and tracking matches.

A Mac menu-bar app that prompts you every fifteen minutes and logs the quarter-hour that just passed.

一款面向 iPhone 和 iPad 的中文麻将训练 App，用拆搭练习、牌理教程、错题复盘和听牌分析训练出牌判断。

A Canada-and-U.S. retirement calculator that models annual spending and decides which account to draw from under local tax rules.

A low-stimulation mobile app offering 68 hand-drawn nature games for children ages one to four.

A rowing force-sensor system records and displays each rower’s stroke, then gives coaches the session data to review ashore.

A free browser-based room planner that traces floor plans, places furniture to scale, and lets you inspect the result from above or at eye level.

A Mac app for collaborating inside the same Ableton Live project, synchronizing edits, clips, notes, samples, and device changes.

A private browser-based tool compares two consenting people's Google Timeline histories to find places and moments where their paths crossed.

An Android weather tool that turns temperature and humidity into hourly climbing-condition scores, with warnings when rock is likely to sweat.

An Android mountain-navigation app for trekking, MTB, skiing, snowboarding, and snowshoeing, with offline maps and route predictions based on your own pace.

A Mac utility that uses head-tracking AirPods to cover your screen when your attention turns elsewhere.

A menu-bar Mac utility that nudges you to drink, records only confirmed sips, and keeps the journal on your computer.

A Windows file-copy and migration utility that queues jobs, resumes interrupted transfers, verifies copies, and deletes originals only after verification.

An interactive orbital clock that links device time and adjustable simulations to a visual model of the Sun, planets, Earth, Moon, Europa, Pluto, and passing comets.

A free, open-source macOS utility that turns one photograph into a continuous wallpaper across multiple monitors.

StagePaz is presentation software for churches, combining lyrics, Bible passages, video, cameras, stage displays, and streaming from one laptop.

Stock Events tracks dividends, bonus issues, splits, rights, buybacks, bond coupons and other corporate actions across Indian stocks, funds and securities.

Tack+ puts app shortcuts, search, clipboard history, small utilities, and a keyboard-LED signal into a six-point strip along the bottom of a Mac display.

A free catalog system that turns images into interactive hotspots, with separate editor and viewer apps for Windows, Linux, macOS, and Chromebook.

An offline audio-guide player for boats, buses, walking tours, and museums, built around one manually started track per stop.

A forthcoming offline birdsong identifier that lets birders control which alerts they hear, save sessions, and export confirmed sightings.

A fitness app that ranks lifting progress through published bench, squat, and deadlift thresholds.

A collaborative timeline tool for building, comparing, and sharing historical chronologies with uncertainty and linked dates.

A browser-based converter that turns SVG, Illustrator AI, and DXF artwork into downloadable 3D models.

Topline is an iPhone voice-memo app that records musical ideas, turns sung words into searchable lyrics, and builds chord backings for another take.

A free reference library of manufacturer torque specifications, part numbers, and procedures scoped to particular vehicles and VINs.

A planned iPhone and Apple Watch tool for precision-rifle dope, combining reticle-aware holds, map-based ranging, weather inputs, and tuned ballistic tables.

A trip-planning workspace for volunteer leaders organizing climbs, scrambles, glacier trips, and backpacking outings.

An AI estimating workflow turns a technician’s inspection notes into a priced auto-repair estimate inside the shop software the business already uses.

A tool for detecting, repairing, retesting, and documenting accessibility issues in PDFs.

A navigation tool that compares the fastest route with one designed to avoid unprotected left turns and undivided high-speed roads.

A map-led monitoring workspace that brings public incidents, transit, rail, airport, and maritime signals into one desktop-oriented command bridge.

A $2.99 iPhone and iPad converter that accepts natural inputs such as “1 1/2 cups,” “350f,” or “4800 yen” without making you choose a category first.

A Mac and Windows execution engine that advances through planned work sessions, breaks, and timers without asking you to keep checking a todo list.

An iOS app blocker that uses Apple's own controls to stop selected apps from opening, without accounts, analytics, or tracking.

A self-hosted cycling and training tool that adjusts the day’s session from workload and recovery data.

A free vehicle-failure analyzer that ranks likely problems by model year and mileage using NHTSA owner complaints.

A browser-based toolkit for counting tokens and estimating LLM costs across major providers and open models.

A browser game where players race from one Wikipedia article to another by clicking links, with daily challenges, levels, random routes, and multiplayer matches.

A Mac and Windows utility that types prepared text into desktop Microsoft Word one character at a time, then checks what was entered.

A fan-made planner for building, comparing, saving, and sharing talent setups across all nine WoW Forever classes.

An interactive playbook for youth coaches that turns described football plays into editable diagrams, animations, practice plans, and game-day call sheets.

An offline companion that helps parents record a child’s move on a physical Go board, choose the intent of their reply, and play it back on the board.

An open-source Dropbox client for macOS that integrates with Finder, the share sheet, the menu bar, widgets, and a command-line tool.

A Spanish-language service for small businesses that turns electricity, fuel, water, and waste invoices into sustainability data and a completed report.

A curated guide to films and shows for highly sensitive children, with age ranges, trigger ratings, and timestamped warnings.

An unofficial fan companion that tracks verified patches and platform-specific issues, saves checklists, and plans loadouts from the items a player owns.

A free browser tool takes up to 40 company names, finds transparent-background logos, and exports an evenly sized 16:9 slide.

A small Mac utility captures an app window, its readable text, and accessibility context, then keeps the bundle in a notch shelf for copying.

A searchable map and directory for finding playgrounds across Sweden.

A local video editor that transcribes footage, aligns it to a script, and produces long-form and vertical cuts with subtitles, callouts, inserts, and music.

A free copy-and-paste reference for accented letters, with Unicode values, HTML entities, ALT codes, and typing guides.

A browser-based editor that removes or replaces text in photos, screenshots, menus, and other flat images.

Amanat is fleet software for Pakistani rent-a-car shops, covering bookings, handovers, deposits, owner statements, and CNIC-based risk checks.

An iPhone app for tracking perimenopause symptoms and HRT, then turning the record into a concise report for a doctor.

HealthSuite is clinic-management software for Nepali practices, covering patient registration, OPD queues, billing, payments, laboratory tariffs, and cash-drawer closing.

A Moroccan school-attendance platform that lets teachers record pupils by scanning printed cards and automatically notify parents of absences.

AyeBrowse is a desktop browser for Windows and macOS built around visible connection controls, tracking-link cleanup, private tabs, and a stated zero-telemetry policy.

A deterministic fishing forecast that combines moon, barometer, weather, water conditions, and lure knowledge to recommend when to fish and what to tie on.

A weekly tracker showing blue-green algae bloom status for 145 U.S. lakes.

An offline Android app that lets two parents privately swipe through 16,423 names, find their mutual favorites, and narrow them to one.

A growing set of free, single-screen UK calculators for consequential choices such as overpaying a mortgage or investing the same money.

A free library of calculators for estimating construction, landscaping, and material quantities, costs, and coverage.

An Australian camping calculator that turns appliance loads, trip length, solar input, and reserve assumptions into a battery target.

A searchable map of fishing waters on the Thames, showing reported permissions, clubs, species, costs, and when each entry was last checked.

A browser-side converter turns ChatGPT, Claude, Gemini, and other Markdown answers into editable Word .docx files.

A source-forward survival guide for first-time visitors to mainland China, covering entry, internet, payments, maps, transport, and identity checks.

A browser-based video collection tool that sends someone a link, lets them record and approve a clip, and delivers it to a private dashboard.

A portable Windows clipboard manager that searches, transforms, and pastes text, images, and file paths without sending clips off the machine.

A voice-to-recipe tool turns a relative’s spoken cooking instructions into a printable recipe card and a saved family record.

CodePass turns an Android phone into a Bluetooth keyboard that sends text to Windows, macOS, or Linux with deliberately human-like timing.

An independent tracker for Codex usage-reset announcements, source posts, reset history, and a private personal countdown.

A YouTube-learning tool that turns sprawling tutorial collections into filtered, annotated shortlists.

Counted texts invitations to households, records replies by named guest, and follows up with anyone who stays silent.

A local-first toolbox removes C2PA, EXIF, GPS, and XMP metadata from images and videos without uploading the files.

Dealrune helps California dealership employees compare written pay plans with the money they actually received.

An interactive history of every AREDL extreme demon’s position from August 2022 to the present.

A planned private iPhone app that reconnects the discontinued CMI Health Memo Box to Bluetooth reminders and adherence tracking.

An AI automotive companion that interprets dealer worksheets, vehicle-history reports, repair quotes, and vehicle comparisons for car buyers.

A community-built guide to bouldering and climbing in Sicily, with mapped rocks, access details, photographed routes, and offline phone access.

A browser-based calculator estimates monthly, annual, and per-mile EV running costs by vehicle model, state, and charging mix.

A Mac utility for finding every photo of a person in Apple Photos and removing only the pictures you choose.

A London comparison tool for 35mm and 120 film labs, covering prices, scans, turnaround times, and value.

An Indonesian-language study resource combining Bible text, Ellen G. White writings, Sabbath School lessons, topical search, daily verses, and selected articles.

A decision-first fishing tool for selected Pennsylvania trout streams, combining live USGS flow and temperature readings with official classifications.

A browser-based video compressor for MP4, MOV, WebM, and MKV files, with no account, upload, watermark, or stated size cap.

Quoting software for South East Queensland landscapers that turns handwritten site notes into priced client quotes.

A backgammon app for playing humans or AI, analyzing matches, and solving puzzles mined from real-game mistakes.

A free beta that turns Oregon hunting seasons into customizable calendar feeds for Apple Calendar, Fantastical, Google Calendar, and Outlook.

A browser-based tool that turns WordPress Site Health exports into client handover, work-completion, and before-and-after reports.

A multilingual guide to prayer, qibla, halal restaurants, masjids, and Muslim history across Hong Kong, Shenzhen, and Guangzhou.

A free macOS menu bar utility keeps a coding agent’s task running while the laptop is closed, then releases the wake lock when the agent goes idle.

A phone-based Pokémon TCG scanner that identifies cards, checks prices, and manages a local collection.

A browser-based editor for drawing clickable hotspots on images and exporting responsive image-map code.

A Turkish-language tool for assigning students to exam rooms and producing the paperwork needed to run the day.

A free iPhone and iPad app for photographing pottery, tracking its stages, recording glazes, and sketching future pieces.

A desktop app for recording or importing lectures, syncing them with slides, adding timestamped notes, and searching transcripts across courses.

A free library of guides, checklists, calculators, wording help, and printable planning packs for funerals, weddings, new babies, and other major life moments.

A Vietnamese-language marketplace connecting nail workers and salons across the United States, with listings for pay splits, weekly guarantees, tips, housing, staffing, and location.

A free browser-based Rubik's Cube solver that reads six phone photos and guides the solution turn by turn in 3D.

A restaurant tool that photographs printed menus, transcribes and translates them into 30 languages, and adds dish-photo polishing plus an AI menu assistant.

A Portuguese iPhone screen-time app that closes chosen apps when their daily limit or focus session ends.

An Android app for recording inflammatory bowel disease symptoms and calculating the Lichtiger activity score.

A mushroom-finding app maps German woodland by how well local conditions suit 16 assessed species.

A cloud point-of-sale system for Nepali restaurants, cafés, bars, and hotels, covering orders, kitchen screens, payments, inventory, staff, and reporting.

It tracks reported usage resets and reset cards, links back to original sources, and estimates when the next reset may occur.

A browser and Safari checkout blocker that makes shoppers retype a fresh code, answer a prompt, or wait before completing a purchase.

An offline Android tracker for logging fuel, charging, and ownership costs across petrol, diesel, electric, and hybrid cars.

A baby-monitor app that pairs two phones directly, using local Wi-Fi or a private travel connection instead of cloud servers.

Upload a piano recording and receive engraved PDF sheet music, MIDI, and MusicXML.

A browser-based image converter, compressor, resizer, and metadata scrubber that keeps files on your device.

A field calculator toolkit for plumbing, gas fitting, and HVAC work, covering sizing, pressure tests, offsets, heat loss, tanks, and unit conversion.

A free, browser-based collection of music tools for printing staff paper, exploring theory, practicing notes, and working with guitar, ukulele, piano, and rhythm.

A Germany-based 3D-printing service lets people upload models, arrange and slice them online, watch a live camera, and order the finished part.