Privacy

Dactylus asks students for nothing about themselves. No account, no name, no email address, no age.

What a student's app sends

When the app first runs it registers the device and is given an identifier that means nothing outside Dactylus. With that identifier it sends:

a device identifier the app generates, the platform (iOS, Android or web) and the app version;
one record per exercise: which line was scanned, how many syllables were right, which rules were missed, how many hints were taken and how long it took.

That is the whole list. There is no advertising, no analytics SDK, no third-party tracking, and nothing is sold or shared.

Teachers

Teachers and content editors sign in with an email address, because they need an account they can return to. That address is used to sign in and nothing else.

Where it is kept

On a server in Finland, run by Tadadaa. The corpus and the results live in one database, and the backups stay on that same server in Finland.

Seeing it and deleting it

In Settings the app offers Copy my data, which returns everything stored against the device, and Delete everything, which erases the device, its results and the identity behind them. Deletion is immediate and cannot be undone; there is no copy kept except in the nightly backups, which age out.

A device identity is not recoverable without the recovery code the app offers in Settings. Lose both the device and the code and the results are simply gone — which is the other side of asking for no email address.

Children

Dactylus is built for school use and collects nothing that identifies a child. A school adopting it does not have to collect consent for personal data that is never gathered.

Changes

If this policy changes in a way that affects what is collected, the app will say so before the change takes effect.

Questions: info@tadadaa.com.