Mathe-Trainer
com.chrbayer.mathe_trainer
android kind 32267
Mental arithmetic practice for primary school. German interface.
latest release
2.15.1
main
released 2026-10-02 17:38 UTC
download apk
com.chrbayer.mathe_trainer_215012.apk · 20.8 MB
✓ signed
cert 7e85b325…
about
- description
- Mental arithmetic practice on a tablet, for children from their first school year. The app measures the time to the correct answer and turns it into a learning curve and leaderboards, where several children on the same device compete with each other. <b>The interface is in German only.</b> It runs entirely offline. No account, no ads, no analytics and no internet permission - the app cannot send anything anywhere. <b>83 lessons in ten groups</b> Counting and comparing pictures for the youngest, then addition and subtraction up to 10, 20, 100 and 1000 - with and without carrying - whole thousands and hundreds below ten thousand, the times tables forwards and backwards, division with and without a remainder, order of operations, telling the time and handling money. <b>Stars for care, lightning bolts for speed</b> Two separate axes on purpose. Stars follow the error rate, bolts the time per task. A child who works carefully earns the stars even slowly. <b>What parents can set</b> Behind a PIN: which groups a child is offered at all, how long they may practise in one stretch and per day, how many runs of one lesson still count towards records in a day, and whether difficult tasks are woven back in. Assignments too: give a child a lesson, daily or weekly, or as a plan for one named day, with a minimum of stars and bolts to reach. <b>Your data stays with you</b> Everything lives in a database on the device. A backup is written only when you ask for one, and handed to Android's share sheet - where it goes is your choice.
- publisher
- 78ce6faa72264387284e647ba6938995735ec8c7d5c5a65737e55130f026307d
- first seen
- 2026-10-01T18:33:18.850949+00:00
- last event
- 2026-10-07 22:55 UTC
- install
- zapstore.dev or any Zapstore-compatible client
source & build
- repository
- https://github.com/chrbayer/mt
- arch flags
- android-arm64-v8a
- manifest
- missing
releases (kind 30063)
2 releases indexed; latest 2.15.1.
| version | channel | released | event |
|---|---|---|---|
| 2.15.1 | main | 2026-10-02 17:38 UTC | 569a2182… |
| 2.13.9 | main | 2026-10-01 08:52 UTC | c1e062e3… |
assets & verification
Every app, release and asset event is schnorr-verified (NIP-01 id + signature) before it enters the catalog, and assets are content-addressed by sha256. We subscribe read-only to the catalog relay — never write to it.
2.15.1 — com.chrbayer.mathe_trainer_215012.apk
- sha256
- e29d63800afcbd5ee2a7310628ac4e91b3c634cda4b06f2715508ddbff70537c
- size
- 20.8 MB
- archs
- android-arm64-v8a
- version code
- 215012
- apk cert sha256
- 7e85b3258cfd28059278887f771d0be0feb7b81c8143903129f8529937a611a1
- download
- com.chrbayer.mathe_trainer_215012.apk
2.13.9 — com.chrbayer.mathe_trainer_213092.apk
- sha256
- 8505e7f41b52d4af42502460da7a612715f249fec802b91516a7e6feb170244b
- size
- 20.7 MB
- archs
- android-arm64-v8a
- version code
- 213092
- apk cert sha256
- 7e85b3258cfd28059278887f771d0be0feb7b81c8143903129f8529937a611a1
- download
- com.chrbayer.mathe_trainer_213092.apk
Showing the newest 2 asset descriptors; the full set is in /api/apps/78ce6faa…