Send us an email
Email is the quickest way to reach us. Describe the issue and we will reply directly.
What to include
These details help us investigate the issue more quickly:
- Phone model
- Android version
- Application version
- A description of the issue
- A screenshot, if available
Response time
We normally reply within 2-3 business days.
Frequently asked questions
Does the application contain ads?
No. The application contains no ads, advertising networks or distracting in-app promotions.
Is an account or registration required?
No. You can begin immediately, and progress is stored locally on your device.
Does the application work offline?
Yes. Learning materials and audio are stored on the device and remain available without an internet connection.
Where does the voice audio come from?
Audio is synthesised with VOICEVOX using the Kasukabe Tsumugi voice and is played locally on the device.
What level can I start from?
You can start from zero. Material opens gradually, so no previous experience is required.