MEANING
空のままなら、まだ入っていない役に立つ言葉をAIが選びます。
Each box plays its animation. Tap one to use it.
The page sound plays with “Book page”. If your iPhone has Reduce Motion on, cards change without animation.
Estimates from OpenAI's standard prices (input / cached input / output), checked Nov 2026. Your real bill may differ a little. GPT-5.6 Sol is a limited-time price.
Example explanations and similar words are made once per card and saved, so opening them again uses no tokens.
Keeps your AI-made words, pictures, explanations, ♡ notes, test history and usage in your Cloudflare account, so nothing is lost if Safari's data is cleared. Your OpenAI API key is never uploaded.
Not backed up yet
Keep this code private — anyone with it can read your backup. To get your words on a new phone or your PC, open the app there and paste the code below.