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Card 871 of 9902026-09-17 issue

Observed arrival · 2026-09-17

Tobien Turns Your Own Books Into Language Lessons

tobien.app Observed source
Editorial interest 84/100 Selection signal · not a rating of the site

A language-learning app that uses contextual AI to help readers understand books in six languages.

Landing page captured for the 2026-09-17 issue.

Field notes

The demonstrated workflow uses a passage from Kafka’s The Metamorphosis as the learning material. A reader can inspect a word such as verwandelt, compare natural and literal translations, see its grammatical role, examine related words, and ask about the sentence’s construction. The founder frames the product as an alternative to courses and convenient but shallow translation, while the page says mobile releases for the App Store and Google Play are forthcoming.

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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Landing page observed 2026-09-17. The live site may have changed.