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Letters for Kidz is free to download and includes a set of letters to try. Unlocking the full app is a single one-time purchase (US$4.99 or the local equivalent). There is no subscription, and there are no other purchases inside the app.

Open Settings inside the app, pass the parental gate, and choose Restore purchases. Make sure the device is signed in to the same App Store or Google Play account that made the original purchase.

Yes. In Settings you can download a language pack, after which letters, words, pictures, and audio all work without a connection. Purchases, restores, and new content still need the internet.

Letters for Kidz ships with English and Svenska. Each language gets its own example words rather than a direct translation of the English ones, so the letter sounds actually match. Norsk, Dansk, Español, Français, and Deutsch are in the queue.

Check the device volume, the silent switch, any connected Bluetooth speaker, and whether sound is switched on in the app's own settings. If it still stays quiet, email us with the app name, your device model, and the app version from the About screen.

There are no third-party ads, no child accounts, no chat, no links out to the web from the child-facing screens, and no behavioural tracking. Purchases and settings sit behind a parental gate.

Roughly ages 3 to 8. Younger children tend to stay with the letters and picture words; older ones get more out of the tracing and the quizzes.

Email forkidz@thinkheart.co. Because we do not create accounts for children, there is usually nothing stored on our side beyond the support email itself, which we can delete on request.