Simple, honest pricing
Start free, no credit card, no trial clock. Go Pro for every puzzle track, the full hidden performance suites, and unlimited submissions.
Free
Free foreverEverything you need to get hooked. No credit card.
- ✓ Full algorithm catalog, performance-graded
- ✓ Guided Katabench Tour with course progress and rewards
- ✓ Progressive hints on every guided puzzle
- ✓ Time + memory metrics on every test
- ✓ Speed leaderboards
- ✓ 10 submissions per day
Pro
Most popular$15/mo billed annually
Save $48 a year (21% off monthly)
The full proving ground: every premium track, every gate, no daily cap.
- ✓ Everything in Free
- ✓ Database / EF Core track with graded query plans
- ✓ Refactoring katas (Roslyn-measured structure gates)
- ✓ Architecture katas
- ✓ Secure-coding track (adversarial test suites)
- ✓ Full hidden performance suites
- ✓ All guided paths with progress tracking and completion rewards
- ✓ Unlimited solution reveals
- ✓ Unlimited submissions (fair use)
- ✓ Priority support
Pro+
$30.83/mo billed annually
Save $98 a year (21% off monthly)
For people training hard: more parallel runs, first access to new tracks, and direct support.
- ✓ Everything in Pro
- ✓ 4 concurrent runs (vs 1 on Pro)
- ✓ System-design challenges (early access)
- ✓ First access to new tracks and gates
- ✓ Direct priority support
Pro turns the puzzle catalog into a curriculum
Follow every guided path, keep section and exercise progress, earn rewards on every solve, and finish each course with a badge, 250 XP, and 25 gems.
Cancel anytime in one click. Not for you? Our refund policy has your back.
Compare every feature side by side ↓
Prices in USD. Taxes may apply and will be calculated at checkout.
The feature-by-feature comparison
| Capability | Free | Pro | Pro+ |
|---|---|---|---|
| Algorithm puzzles (full catalog) | ✓ | ✓ | ✓ |
| Open practice mode (whole library) | Unlocked tracks only | ✓ | ✓ |
| Guided learning paths | Tour + rewards | All paths + rewards | All paths + rewards |
| Progressive hints | ✓ | ✓ | ✓ |
| Submissions per day | 10 | Unlimited (fair use) | Unlimited (fair use) |
| Runs per day | 50 | Unlimited | Unlimited |
| Time + memory metrics, diff | ✓ | ✓ | ✓ |
| Reveal reference solution | 3 / day | Unlimited | Unlimited |
| Speed leaderboards | ✓ | ✓ | ✓ |
| Database (LINQ / EF Core) track, incl. graded query plans | Preview only | ✓ | ✓ |
| Refactoring katas | ✗ | ✓ | ✓ |
| Architecture katas | ✗ | ✓ | ✓ |
| Secure-coding track | ✗ | ✓ | ✓ |
| Hidden performance gates | Limited | Full suite | Full suite |
| Concurrent runs | 1 | 1 | 4 |
| System-design challenges * | ✗ | ✗ | Coming soon |
| First access to new tracks and gates | ✗ | ✗ | ✓ |
| Support | Community | Priority | Direct (priority) |
- * System-design challenges: On the roadmap: Pro+ will include a monthly minute allowance.
Frequently asked questions
How does payment work? +
Checkout opens inside the app after you sign up: card and local payment methods, with VAT/sales tax calculated automatically and a proper invoice for every charge. Payments are processed by our payment partner, Paddle, so that's the name you'll see on your card statement and receipt.
Can I cancel anytime? +
Yes. Cancel in one click from your account settings. You keep Pro until the end of the period you paid for, then your account falls back to the Free plan. Your solved puzzles and progress are never deleted.
What counts as a submission? +
A submission is a graded run against the full hidden test suite (the Submit button). The interactive Run button (sample cases and your own custom inputs) is not counted and is there precisely so you can iterate freely.
What does "unlimited (fair use)" mean? +
No daily cap for humans practicing deliberately. Automated traffic, account sharing, or using the platform as a compute service falls under the Acceptable Use Policy and may be throttled.
Is the Free plan a trial? +
No, it's free forever. You get the full algorithm catalog with grading, metrics, rewards, and leaderboards, plus the guided Katabench Tour. Pro unlocks every guided path and completion reward, the premium puzzle tracks (Database/EF, Refactoring, Architecture, Secure Coding), the full hidden performance suites, and removes the daily cap.
Is annual billing cheaper? +
Yes. Annual Pro works out to $15/mo ($180/yr) versus $19/mo month-to-month, so you save about 21% for paying yearly. You can start monthly and switch to annual whenever you like; we'll always announce pricing changes well in advance.
Do you offer team or student discounts? +
Not yet, but we want to. Email [email protected] and tell us about your team or school. Early conversations shape what we build.
Try it before you pay for it
The Free plan is the real product, not a demo. See if the grading makes you better, then decide.
Start solving, it's free