Observed arrival · 2026-09-06

Plain PDF: The Offline Reader That Cannot Go Online

plainpdf.app Observed source

Editorial interest 84/100 Selection signal · not a rating of the site

A free Android PDF reader and editor for reading, scanning, signing, and modifying documents without ads, an account, or internet access.

Landing page captured for the 2026-09-06 issue.

Field notes

The app combines PDF reading, scanning, annotation, signing, and file manipulation on the Android device rather than routing documents through a web service. Its stated permission model is unusually specific: it has no internet permission, and the page says OCR runs locally for English and Serbian in Latin and Cyrillic scripts. The homepage also identifies GPL v3 licensing, Android 9+ compatibility, and seventeen interface languages.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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