Last updated: 25 September 2026
Algebra Handbook is an offline educational algebra reference published by Oleg Korunov. This policy describes the mobile app distributed through Google Play and the App Store. The same policy is available inside the app, under About → Privacy.
The app does not create accounts and contains no advertising, analytics or tracking code. It does not send us personal information and does not contact our servers. The Android release does not request internet access at all.
Only your chosen language, your theme, the articles you star and your Practice results are saved, in the app’s local settings. Numbers you type into the solver or a calculator, your answers and the text you type into search are processed on the device and are not saved to any history.
The articles, graphs, solvers, translations and fonts are installed with the app. Everything works without a network connection.
The app does not request access to your camera, microphone, contacts, files or location.
Google Play, the App Store and your operating system handle installation, update and crash data under their own rules. That happens outside the app, and we do not receive that data.
To delete what the app has saved, clear the app’s data or uninstall it. You can also reset Practice results in About. On iOS, local preferences may be included in the device backup that your system manages.
The app is a study aid. It collects nothing from anyone, including children, and shows no advertising.
If you write to us by email, we receive your address and the contents of your message and use them only to reply. Please do not send passwords or other sensitive information.
Any change to the app’s data practices will be reflected here with an updated date.
Publisher: Oleg Korunov
Support: ultim8digital@gmail.com