Most vocab apps let you tap "I knew it" — and three weeks later, the word is gone. WordSprint brings each word back at the exact moment you're about to forget it, so it actually sticks.
What makes it different:
• Smart review timing tuned for long-term memory
• 5-minute sessions that fit any gap in your day
• Streaks & 16 badges that reward consistency, not grinding
• 6-language UI: EN / JA / KO / HI / VI / AR
Built for real progress.
