How do accounts and multi-device synchronization work in Tomaru?

When studying a language with spaced repetition, your accumulated review history is your most valuable asset. That review history powers your personalized schedule, feeds your completion forecast, and shapes your reading passages. Because years of memory data represent a substantial investment, your progress belongs to your account rather than a specific physical device. Losing or replacing a phone should never cost you a year of learning history.

Tomaru keeps your entire learning profile secure and continuously synchronized across all your devices.

How does synchronization work across devices?

Signing into your account connects your progress seamlessly across every platform where Tomaru is available:

• Sign-in options: Create an account or sign in using an email address and password, or use single sign-on with Google or Apple. Standard password resets are available if you forget your credentials.
• Unified cross-platform access: Access one single account across iOS, Android, and the web. Your flashcards, vocabulary lists, study settings, and review history remain identical everywhere.
• Cross-device card sync: Answering a card on any device updates your entire account, including reviews answered within home screen widgets.
• Connection requirement: Tomaru requires an active internet connection to process review intervals and maintain exact synchronization across devices.

By maintaining your memory profile in the cloud, you can seamlessly review cards on your phone during a commute, study on the web at a desktop, or complete widget reviews throughout the day without losing step.

To learn more about device compatibility, see platforms and sync. To explore how your review history tailors your learning, read personalized scheduling.

Related questions

Can I use Tomaru on multiple devices at the same time?

Yes. You can sign into your Tomaru account across iOS, Android, and web browsers simultaneously, and your study data will stay synchronized across all platforms.

Do reviews answered in home screen widgets count toward my main schedule?

Yes. Answering cards through a home screen widget updates your account history and schedule identically to reviews completed inside the main app.

What happens to my study data if I lose my phone?

Because your progress and review history are stored securely within your Tomaru account, logging into your account on a new device fully restores all your cards, settings, and scheduling data.