KanaVR
Use your VR headset to get familiar with the Japanese Hiragana and Katakana syllable alphabets!
You are challenged to pick the correct Kana letter before it will hit you.
A VR headset for smartphones like Google Cardboard or similar will greatly improve the overall experience, even though a non-VR mode exists as well for those without "phoney goggles"
Most of the text in this app is written and spoken in Japanese for a more authentic feel.
Download
You may download KanaVR for your Android or iOS device for free on Google Play or the Apple App Store: