RAIO
Available on Google Play
3.3(224)
50,000+ installsFreeLifestyle
Updated Feb 18, 2026 · v1.16.8
Learn languages by studying sentences using the spaced repetition algorithm.
RAIO is a mobile application where users can learn languages by studying sentences using the spaced repetition algorithm. - Users can mine their own phrases - Users can choose the time and hour to study
3 years on Google Play
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Rating breakdown
5★
122
4★
4
3★
8
2★
4
1★
85