Some chapters in Math are memorization heavy, like Trigonometry.

These chapters require you to know a whole bunch of basic formulae and identities before you can even begin to attempt to solve problems.

Here's an example of such a problem.

\[ \text{Prove that } \sqrt{\sec ^{2} A+\operatorname{cosec}^{2} A}=\tan A+\cot A \]

You need to know the following trigonometric identities after which solving the problem becomes trivial.

Before Teachers start solving such problems with the class, they share a formula sheet like this with the class and instruct the students to memorize them.

Memorization is not equally easy for everyone! Students differ significantly in their ability to memorize things. I personally struggled with it a lot as a student.

But it needn't be like that.

Memorization can be effortless with a technique called "Spaced Repetition".

Spaced repetition is a centuries-old psychological technique for efficient memorization & practice of skills where instead of attempting to memorize by ‘cramming’, memorization can be done far more efficiently by instead spacing out each review, with increasing durations as one learns the item, with the scheduling done by software.

Nicky Case has a wonderful dive here.

I wanted to take the idea of SRS and apply it to this context. There are tools that already do this, like Anki, but I wanted one that was specifically for this particular purpose — to remember Math formula.

Out of this, stemmed Remember.