Using 21st Night as an error log makes your tutoring sessions more effective.

Your tutoring clients want your sessions to target the topics they have trouble with. Using 21st Night as an error log helps you do so.

Save time and teach in a more client-focused way with 21st Night. More personalized sessions create happier clients, more referrals, and more revenue. What’s not to love?

And happy clients mean…

How tutors use 21st Night as an error log

21st Night is an app designed by a tutor for tutors. In my tutoring practice, we tutor all the graduate exams, which include math, verbal, and content-focused exams.

We use 21st Night to:

  1. Assign our clients work
  2. See analytics on the work we assigned them
  3. Make sure they actually remember what we taught

 To see how 21st Night works, watch the video below, or read on!

Let’s start with how to set it up. Here’s a deck that I’ve created with one of my students.

When I click through, I get to see how each student is doing on the questions, including any notes they’ve taken for themselves explaining the problem or giving themselves hints (which, depending on the quality of their explanation, can be a good place for me to step in).

I can also assign them additional questions just for themselves, or they can add cards to their own personal deck.

Last, if I want to see how my students are performing on the categories I assigned, I can get either a quick look at their proficiency or a detailed look at the analytics.

Using this app (available on mobile or desktop, by the way), we can achieve much better outcomes for our students with minimal effort on our part.

Our tutoring sessions are more productive, as I know exactly what my students are having trouble with.

On their own time, our students’ self-studying is much more productive, as 21st Night forces them to review and redo the questions that they have the most trouble with.

Last, our clients are even happier than before because they can see the progress they’ve made. They can see every question they’ve mastered right in 21st Night.

Try 21st Night free for 14 days.

Real results

“Your method of preparing for the GRE has been by far the best method I have encountered to succeed in this exam. If I were to take any other standardized examinations in the future, 21st Night would be the first tool I reached out for.”

Anirudh Sriram, University of Chicago Graduate Program in Computer Science

I increased from 590 to 680 in just 7 weeks, thanks to 21st Night and you!

Ink Eze, AsoEbiBella

Think these testimonials are impressive? We’ve got a lot more.


21st Night is free for tutors, but works on a licensing model for their students. Each student will need their own license, which costs $40 for 3 months, $50 for 6 months, and $75 for a year.

Check out our pricing page for more info.