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About shows our contact address, [email protected].
A smaller download.
Quick answer
Multiplication tables 2–9: see, remember, slash the answer.
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
Screenshots
How to install
- Download the APK from the button at the top of this page.
- Allow “Install unknown apps” for your browser or file manager only, not for every app.
- Open the downloaded file and confirm the installation.
- If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.
Data safety
- Every file is checked against its published SHA-256 before it is listed.
- Files are scanned for malware on every update.
- The permissions each app requests are listed on its own page.
- Read the full safety policy for how we test, flag, and delist files.
Frequently asked questions
What is SlashFacts?
Multiplication tables 2–9: see, remember, slash the answer.
Who develops SlashFacts?
SlashFacts is developed by PROTO/fish.
Which Android version does SlashFacts require?
SlashFacts requires Android API 24 or later.
What is the current version of SlashFacts?
The synchronized F-Droid version is 1.1.0.
Which license does SlashFacts use?
The signed F-Droid metadata lists GPL-3.0-only.
Where is the source code for SlashFacts?
https://github.com/PROTO-fish/slashfacts
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