Satchel: a walkthrough

Five made-up fractions questions: typed as plain text, practised one at a time in the preview, then packed into one offline file. 1 min 3 s, narrated, with captions.

Transcript

1. Satchel turns practice questions that a teacher types as plain text into one small file that works without internet, on any phone, with a keyboard or a screen reader. This example has five fractions questions, and all five are ready.
2. In the preview, the student sees one question at a time, with large targets and no timer. A wrong answer shows the right one, and why.
3. Typed answers accept any form the teacher allows, so one half counts as right. A hint is there when the student asks for it.
4. At the end, the student sees what they missed and can practise just those two again. Larger text and high contrast are remembered on the device.
5. The teacher downloads one HTML file of about twenty-five kilobytes. It opens from the downloads folder with no data, and if scripts are blocked it still lists every question with its answer. A paper copy prints with the answers on their own page.

Recorded from the live app with the built-in made-up example. The narration is a synthetic voice made with a text-to-speech model (Qwen3-TTS); captions are on by default.