This privacy policy explains how the 200-Day Kanji Challenge app (“the app”) handles information. The app is developed and maintained by cola lab (“we”, “us”).
The app does not require an account, does not collect personal information, and does not send your study data anywhere. Everything you enter — your learning progress, streaks, and settings — stays on your device. The only outside party involved is Google AdMob, which shows the ads that support the app.
We do not ask you to create an account or sign in, and we do not collect your name, email address, or any other personally identifying information.
The app stores the following locally on your device only, using standard Android app storage:
This data is never transmitted to us or to any third party. Uninstalling the app deletes it.
If you turn on the optional daily study reminder, the reminder is scheduled directly on your device using Android’s notification system. No reminder data is sent to or processed by any server.
The app shows banner ads served by Google AdMob. To deliver and measure ads, AdMob and its partners may collect and process information such as:
This data collection is performed by Google, not by us, and is governed by Google’s own privacy policy. You can review how Google uses this data here:
You can opt out of personalized advertising through your device’s ad settings (Android Settings → Privacy → Ads).
The app’s content is suitable for a general audience, but the app is intended for users aged 13 and older and is not directed at children under 13. We do not knowingly collect personal information from children.
As described above, the app collects no personal information from any user. If you believe a child under 13 has provided personal information in connection with the app, contact us at hs.smartmro@gmail.com and we will take appropriate steps.
If this policy changes, we will update the “Last updated” date shown on this page. Continued use of the app after a change means you accept the revised policy.
If you have questions about this privacy policy, contact us at: hs.smartmro@gmail.com
Last updated: 2026-09-01