Observed arrival · 2026-11-13
Serval counts language-learning listening hours
A free browser extension tracks time spent listening to videos in languages you’re learning across nine sites.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People learning languages through video and streams
- Worth noticing
- Native-language minutes remain in the log but are excluded from the total, so the homepage says the figures reconcile.
Field notes
The extension labels video language from audio on the user's computer and keeps intervals in the browser. The homepage describes a yearly climb, calendar, streaks, and dated achievements built from the same ledger, with file backup, restore, and spreadsheet export. Its hour milestones are presented as rough landmarks drawn from the Dreaming Spanish roadmap for languages close to the learner's own; the page says distant languages may take longer.
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
One card from the complete issue