IAS Labs by Aptness.ai

Revise Before You Forget: Spaced Revision for UPSC 2027

By IAS Labs by Aptness.ai · 4 min read ·

You studied the Harappan civilisation in June and understood it well. By Prelims, will it still be there? Only if you go back to it at the right time.

Revision Planner: a forgetting curve with five planned revisions and the estimated memory on exam day.
Revision Planner: each revision lifts the curve back up before exam day.

PDF notes vs Revision Planner

Studying from a PDF

Revision Planner

When to revise
Whenever you remember to.A planned date for every revision, up to exam day.
How much will stay
No way to know until the exam.An estimate of your memory on exam day.
How you revise
Reread the same pages.Test your memory first, then check.

You forget faster than you think

Memory researchers first measured the “forgetting curve” over a century ago, and it still holds today: memory drops sharply in the first days after learning, then levels off. So a topic you knew well months before the exam will fade unless you revisit it.

CrammingRevise a topic 5 times in one day. Feels great, fades fast.
SpacingRevise it 5 times over 2 months. Takes the same time, lasts much longer.

A simple gap plan

  1. Day 1 or 2: first revision, soon after you learn the topic.
  2. After a week: second revision.
  3. After a few weeks: third revision.
  4. After a month or more: keep stretching the gap until the exam.

Plan it with Revision Planner

Revision Planner shows how fast you forget each topic and tells you what to revise today, so you spot the gaps before the exam, not in the exam hall.

What to revise in each round

  • Round 1Your full notes, once, slowly. Mark what you couldn't recall.
  • Round 2Only the key points and the marked bits. Test yourself before you read.
  • Round 3Questions only: PYQs, quiz misses, your own one-liners.
  • Final roundYour mistakes notebook and the weakest topics. Nothing new.

Each round should be shorter than the one before. If round 3 takes as long as round 1, the earlier gaps were too long.

How Revision Planner works

  1. Take a quick memory test on a topic you've studied.
  2. See your own forgetting curve, drawn from your answers.
  3. See the same memory with revisions added, all the way to exam day.
  4. Each day, it tells you which topics are due.

Mistakes to avoid

Don'tCount rereading as revision, or start new topics in the last month.
DoTest yourself first in every round, and give more rounds to the topics you keep getting wrong.

Quick questions

How many times should I revise a topic?
Most aspirants aim for three to five spaced revisions before the exam. Weak topics need more.
I've already forgotten a lot. Is it too late?
No. Relearning is much faster than learning the first time. Start the gaps from today.
Can I revise many topics on the same day?
Yes. Mix them. Switching between topics in one sitting works better than doing one topic for hours.