OtoateSense

"What's this sound?"
Just listen to the sound that plays, and type your answer.
A simple but surprisingly deep sound-guessing quiz.

▼ How to play
1. Tap Start — a random sound plays (up to 3 seconds)
2. Tap "Replay" to listen as many times as you like
3. Type your answer on one line and submit
4. After all questions, see your score and accuracy!

▼ 30 varied sounds
From animal calls, vehicles and instruments to nature and
everyday sounds — familiar yet surprisingly tricky.
Set 3 to 10 questions per game, however you like.

▼ Forgiving about how you answer
"cat", "kitty", "meow"... the same sound can be called many ways.
Synonyms, alternate readings, English and onomatopoeia are all
accepted, so you can answer freely.

▼ Build your own sound quiz
Just hold the mic to record sounds around you (up to 3 seconds).
Add several accepted answers to make your own original questions.
Great for asking family and friends, "What's this sound?"
You can edit answers or re-record anytime, and store up to 20 recordings.

▼ Choose your mode
- Play with the built-in sounds only
- Play with your own recordings only
- Mix both together

Perfect for a quick brain teaser, testing your ear, or playing with family.
Japanese / English supported — switch anytime in Settings.

※ Recordings are used only to create quiz questions and are never sent anywhere.
※ No ads, no in-app purchases, no data collection. No network access — fully offline.