Sumbloom alternatives: 3 rivals compared
Free daily number puzzle: combine six numbers with + − × ÷ to hit five targets.
| Rival | Published paid plans | Free | Checked |
|---|---|---|---|
| API Ninjas Sudoku | Developer $39/100,000; Business $99/1,000,000; Professional $199/10,000,000 (shared API Ninjas quota); JSON only | yearly: '34% off' yearly | Free tier with key (3,000 calls/mo shared); commercial use not permitted on free | 2026-09-27 |
| YouDoSudoku API | None | '100% free', API key required, no stated rate limit; JSON only, sudoku only | 2026-09-27 |
| KDPEasy | Starter $19/mo 35 credits; Pro $49/mo 100 credits; Power User $79/mo 250 credits; includes sudoku/word search/crossword/maze creators (no kakuro/kenken listed) | PAYG: Credits purchasable individually (rates not shown) | | None for generators (3 free covers) | 2026-09-27 |
Get Sumbloom API Starter: 10,000 puzzles a month: $5/monthTry itAll plans
Sumbloom API at a glance
Free daily number puzzle: combine six numbers with + − × ÷ to hit five targets.
- Daily number puzzle game
Plans (live store prices)
- Sumbloom API Starter: 10,000 puzzles a month: $5/month
- Sumbloom API Pro: 100,000 puzzles a month: $15/month
- Sumbloom API Starter yearly: 10,000 puzzles a month: $50/year
- Sumbloom API Pro yearly: 100,000 puzzles a month: $150/year
Free: free 50/day
Not built for
- programmatic calls: it is a web page for people, with no API