Education · Open source
SlashFacts
PROTO/fish
Multiplication tables 2–9: see, remember, slash the answer.
Opens the official F-Droid page
About SlashFacts
SlashFacts is a multiplication-tables trainer (2 to 9) built around a single gesture: you answer by drawing one continuous stroke through the digits of the result. No buttons, no rewards, no screens between attempts — see → remember → slash → next .
Pick the tables to practise, and each round adapts to the facts you keep missing or answer slowly.
A missed fact shows its answer and comes straight back until it is answered right.
The Facts map ticks every fact answered right first time — one mark a child can read at a glance.
Haptic feedback on every answer, fully usable offline.
Designed for children: no account, no network access, no analytics, no ads. Everything stays on the device.
Made by PROTO/fish · https://proto.fish
What's new in 1.1.0
Tablets: the paper column fills the screen in portrait, landscape and split screen. About shows our contact address, [email protected]. A smaller download.
How to install SlashFacts
- Tap Download — the app's official page on F-Droid opens.
- Install it with the F-Droid app (recommended, for automatic updates), or use the download button on that page.
- If Android asks, allow the F-Droid app or your browser to install apps, then tap Install.
- Open SlashFacts from your app drawer.




