I created a flash mental calculation app “Aurora
★Flash”
✨You can set the number of digits, number of words, and seconds in detail
🙆We also have 3 unique difficulty settings based on mental arithmetic, etc.
🥇
🥈
🥉Please use it for daily brain training and practice
🥰
https://andro.io/app/aurora-flash
Power 100
Android app profile
おーろら★ふらっしゅ【フラッシュ暗算】 for Android – Latest Version & Features
by Fairy Select
★★★★★
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