Coming Soon — iOS & Android

Your knowledge has
an expiry date.

Visualize how skills fade using the Ebbinghaus forgetting curve. AI-generated micro-challenges keep everything alive — in 2 minutes a day.

📱 Coming to iOS & Android See how it works ↓

Features

Everything your memory
needs to stay sharp.

Built on science. Powered by AI. Designed for real life.

📊

Live Health Score

Every skill gets a 0–100% health score updated in real time using the Ebbinghaus decay formula. Watch it drop when you don't practice — and climb back when you do.

🤖

AI-Generated Challenges

Claude, GPT-4o, or Gemini generate personalized quizzes for your exact skill and context. No static flashcard decks — every challenge is unique.

⏰

Spaced Repetition

The app tells you exactly when each skill needs practice before it drops below the danger threshold. No more guessing — just efficient, scheduled reviews.

🌍

Any Skill Domain

Programming languages, human languages, musical instruments, academic subjects, professional skills — if you can learn it, you can track it.

📈

Deep Analytics

Health trends, activity heatmap, response times, best practice hour, per-skill decay forecasts. Full visibility into your knowledge portfolio.

🎮

Gamification

XP, levels, streaks, and achievements keep you motivated. Earn more XP for harder challenges answered quickly and confidently.

The Science

Built on the Ebbinghaus Forgetting Curve.

In 1885, Hermann Ebbinghaus proved that memories decay exponentially without reinforcement. Your brain forgets ~50% within 24 hours — and most apps ignore this completely.

Skill Decay Tracker applies this formula to every skill you track. The decay rate adapts based on your actual performance — skills you know well decay slower, fragile skills demand more frequent review. Practice at the right moment, not at a random time.

Thriving

90–100% — keep the streak going

Healthy

70–89% — review soon

Fading

50–69% — practice now

Wilting

30–49% — urgent

Critical

0–29% — skill is dying

Without practice — any skill follows this curve.

Pricing

Start free. Go Pro when you're ready.

Free tier gives you everything to experience real results. Pro unlocks the full power.

Free

^$0

forever

✓ 3 skills tracked
✓ 3 AI challenges / day
✓ Daily Review mode
✓ Basic analytics
✓ 1 home screen widget
— Quick Practice & Deep Dive
— Full analytics & heatmaps
— All 4 widgets + Dynamic Island

Coming Soon

Your knowledge hasan expiry date.

Stop forgetting what you worked hard to learn.

Your knowledge has
an expiry date.