Dấu - See your Vietnamese tones
Dấu makes Vietnamese tones visible. Record a word, compare your pitch with validated contours, see the meaning your tone created, and get the exact physical fix
What it does
Dấu turns Vietnamese tone practice into a visual exercise, charting a learner's recorded pitch against validated reference contours. It names the meaning the produced tone actually carries and describes the physical adjustment needed to correct it.
Awards
- 2026OpenAI Build Week2nd Place | Education
Source & verification
Source: Devpost
Verified: Aug 26, 2026
Original announcement