Pricing

Learning is free. Only the AI chat costs money.

Here is the honest math: lesson text is static, and challenge grading runs on our own server. Both cost us nearly nothing per learner, so they are free forever. The one expensive thing is the AI tutor: every message costs model fees, so it is priced in points.

How to get points without spending a cent

100 points for signing up

Enough to ask your way through the first module. No payment method needed.

20 free points every day

Log in, tap once, done. Show up daily and you build a streak and earn badges too.

Watch an ad for 15 points

Up to 6 times a day. The advertiser's money is your tuition.

Don't want to wait? Just buy some

Points never expire. No subscription, no auto-renew. Buy what you use.

Most popular

Regular

$9.99

1800 points (includes 300 bonus)

≈ 360 explanations

Sign in to buy
Best value

Hardcore

$24.99

5000 points (includes 1000 bonus)

≈ 1000 explanations

Sign in to buy

Common questions

Can I finish a whole track without paying?
Yes. Lessons, challenges and grading are all free. Twenty daily points plus ad rewards covers a dozen questions a day.
Am I charged if the AI gives a bad answer?
Upstream errors, timeouts and empty replies are refunded in full, automatically. If it answered but you didn't love the answer, the points stand: we did pay for that one.
Do points expire?
No. There is no subscription either, so nothing ever auto-charges your card.
Why not just do a membership?
A membership forces beginners on a tight budget to pay on day one. Pay-per-question with ads as a fallback means people who want to learn but can't pay can keep going.