Support
Email: rohimabegummoni@gmail.com
Please include the app name, your phone model and Android version, and a screenshot if something looks wrong. We usually reply within a few days.
Frequently asked questions
Do the apps need an internet connection?
No. All lessons and reference pages are built into the app and work offline. The internet is only used to show ads.
How do I change the language?
The app follows your phone’s language when it is available. To pick a different one, tap the globe button in the app and choose a language. Most apps are available in English, Spanish, Portuguese, French, German, Arabic, Hindi and Indonesian.
How do I use dark mode?
The apps follow your phone’s light or dark theme automatically. Change it in your phone’s display settings.
I found a mistake in a lesson or formula.
Thank you! Email us the app name, the page or topic, and what looks wrong. We check every report and fix confirmed mistakes in the next update.
The app shows an old page or behaves strangely.
- Update the app from Google Play.
- Close the app fully and open it again.
- If the problem stays, clear the app’s data in Settings → Apps → (app name) → Storage. This only resets your settings, such as the language.
Why are there ads?
A small banner ad keeps the apps free for everyone. You can manage ad personalization in your phone’s settings. See our Privacy Policy for details.
Are the device guides official?
No. Our watch, band and smart speaker guides are independent, unofficial guides. For warranty, repairs or account problems, please contact the device maker.
How do I delete my data?
We do not collect personal data or have accounts. Clearing the app’s data or uninstalling the app removes everything it stored on your phone. See the Privacy Policy.