Pricing
Start without an account. Pay when the free limit starts getting in the way.
| Free | Pro | |
|---|---|---|
| Price | $0 | $12 a month or $84 a year |
| Tutor turns | 8 with no account, 20 a day with one | 200 a day |
| Skill map and reviews | Included | Included |
| Query exercises | Included | Included |
| Final assessment | Included | Included |
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