Support
Support for apps published by Particles and Waves.
Contact
Send questions and bug reports to the address below. A reply may take a few days.
Please include the app name and your device (iPhone or Android).
Frequently asked questions
A purchase stopped working (new phone, reinstall, etc.)
Open the app’s settings and tap “購入を復元” (Restore purchases). You need to be signed in with the same Apple ID (or, on Android, the same Google account) you bought with.
I want a refund
In-app purchases are processed by Apple or Google, so Particles and Waves cannot issue refunds. For App Store purchases, use reportaproblem.apple.com; for Google Play purchases, use Google Play’s refund process.
I found an error in a question or explanation
In the qualification apps, use “誤りを報告” (Report an error) on that question. The question is identified automatically.
Do I need an account? Where is my data stored?
The qualification apps work without an account. Study records and settings are stored on your device. For what each app sends and how long it is kept, see the privacy policy.
Particles and Waves · Privacy policy