Simple pricing, by the problem
Every problem costs 1 credit, whatever its topic or explanation level: $0.08 to $0.10 per problem depending on the plan or pack. Subscribe for the best price, or buy a one-time pack.
Monthly plans
Starter
$7.99/ month
100 credits
- 100 problems a month
- Up to 300 words per problem
- All topics and both levels
Renews automatically at $7.99 per month until you cancel. Cancel anytime from your account page; your plan stays active until the end of the paid period.
Pro
Most popular$19.99/ month
250 credits
- 250 problems a month
- Up to 300 words per problem
- All topics and both levels
Renews automatically at $19.99 per month until you cancel. Cancel anytime from your account page; your plan stays active until the end of the paid period.
Tutor
$49.99/ month
650 credits
- 650 problems a month
- Up to 300 words per problem
- All topics and both levels
Renews automatically at $49.99 per month until you cancel. Cancel anytime from your account page; your plan stays active until the end of the paid period.
One-time problem packs
Mini
$4.99
50 credits
Plus
$14.99
160 credits
Max
$34.99
420 credits
Billing FAQ
What does a problem cost?
1 credit: one solved problem of up to 300 words, in any topic and at either explanation level. The price is shown before you solve, and it is the same for a one-line equation and a long word problem.
Is there a free plan or free credits?
No. Creating an account is free, but there are no signup credits or free daily problems; solving uses purchased credits. The guides, formulas and worked examples on the site are free to read.
Do unused credits expire?
Purchased and subscription credits stay on your balance while your account is open.
Can I cancel my subscription?
Yes, at any time from your account page. The plan stays active until the end of the paid period.
Do I get credits back if a solution fails?
Yes. If a solution fails, runs out of time or the text is not a math problem, the credit returns to your balance automatically.