Privacy Policy
This page explains what TubeSong collects and how it is used. The app is operated by Taichi Akimoto, an individual developer. Effective date: November 1, 2026.
What we collect
When you use the app, the following information is sent to the app server and stored there.
- An anonymous ID that the app creates automatically
- Your study record for each song (the days you listened, the phrases that appeared in quizzes, the level of each phrase, the phrase you chose first, how many times you tapped)
- Only when you choose "Apple でつづける" (Continue with Apple) or "Google でつづける" (Continue with Google) under "アカウント" (Account) in Settings: for Google, the ID, name and email address of that account; for Apple, the ID only
- A mark that says whether you were subscribed at that time (used only for statistics; it is not used to decide whether you are subscribed; the subscription itself is managed by the store)
- The app version
- Information that arrives with communication (the type and version of your OS, your IP address)
Unless you choose Continue with Apple or Continue with Google, the anonymous ID is not linked to your name or your email address. If you choose Google, the name and email address of that account are stored with the ID (for Apple, the ID only). Either way, your record then continues on other devices and on the other OS with the same account.
What we do not collect
We do not collect the following information.
- Your voice or microphone audio
- Location
- Contacts
- Photos
- Advertising ID
The app does not use the microphone. It does not record your voice and does not send it.
How we use it
We use this information to keep your study record and to restore it after you reinstall the app. We do not use it for advertising.
Who stores it
Data storage is handled by Supabase (Tokyo).
Ads, payment, and analytics
The app has no ads. It does not use analytics tools. The app has a paid subscription called "Plus". Purchases and renewals are made through your App Store or Google Play account, and the subscription itself is managed by the store.
How long we keep it
Data is kept until you delete it.
How to delete it
In the app, tap "設定" (Settings) at the top right of the home screen and choose "学習データを消す" (Delete study data). This deletes your data from both your device and the server.
If you cannot open the app, email us at italyitalienitalia@gmail.com. Because the data is anonymous, we will tell you what we need to confirm that the data is yours after you contact us.
Device backups
On Android, your study record and the anonymous ID may be included in your device backup. On iOS, the anonymous ID stays in the keychain, so your record comes back even after you reinstall the app.
Changes to this policy
If we change this policy, we will post the change on this page.