Pay with Points
No subscription — top up points as needed and unlock problems.
Point Packs
100P
$1.99
300P
$4.99
600P
$7.99
How Points Are Used
- Basics = 25P
- Problems (coding tests) = 50P
- Earn 10P per ad (5/day)
Every problem offers a free preview. Points are only needed to view the full content.