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Feature · Analytics

Decay tracker🔒 Premium

Knowing a chapter today doesn't mean knowing it on exam day. Decay tracker models how fast each topic fades from your memory and shows exactly when a short, well-timed revision lifts retention back up — so you revise just before you'd forget, not after.

What it is

Memory fades on a predictable curve — fast at first, then slower. Decay tracker estimates that curve for each topic from your own attempts, then marks the moment a quick revision would refresh it most efficiently. The result is fewer hours spent re-learning things you only just forgot.

Preview · Decay tracker Sample student · Premium preview
100% 55% 10% Days since you learned it → Revise here ↑
Retention fading Best time to revise After revision
What this reveals
Genetics is fading toward forgetting — a 10-minute review now resets the curve.
Left alone, this topic keeps slipping right when you need it in a mock. A short revision at the marked point holds it near the top for far longer — much cheaper than re-learning it from scratch later.

How it works

1

Track recall over time

How well you re-answer a topic days later is logged for each chapter.

2

Fit a decay curve

A forgetting curve is estimated per topic — some fade fast, some hold.

3

Find the right moment

The point just before recall drops too far is marked for revision.

4

Lift and repeat

A short review resets the curve, and the next ideal date is scheduled.

What you get

✓Revision timed to memory, not to a fixed weekly routine
✓Topics caught just before they slip out of reach
✓Far less time wasted re-learning what you only just forgot
✓Stronger retention on exam day, when it actually counts

Unlock Decay tracker

Decay tracker is a Premium feature. Start with a free mock to build your profile — your decay curves are ready to switch on the moment you upgrade. No card needed to begin.

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