Rainbow Sudoku

Train Your Brain with Rainbow Sudoku

13 levels from Novice to Maestro. Daily challenges. Offline desktop app. Clean, respectful experience.

Download for Windows Try the Chrome Extension

Why Rainbow Sudoku?

🎯 13 Difficulty Levels
Novice → Maestro. Unlock as you improve.
🧠 Learning‑First Design
Gentle cues that teach real techniques.
📅 Daily Challenge
Fresh puzzle each day.
📴 Offline Desktop
Windows app runs fully offline.
🏆 Local Leaderboard
Track times & streaks — no account.
🛡️ Respectful Ads
Free/Pro/Plus with clear limits.

How It Works

1) Pick Your Level
6×6 / 9×9, Novice to Maestro.
2) Play & Learn
Crisp UI + teaching hints.
3) Track & Improve
Chase PBs and view local stats.

What Players Say

“UI feels crisp, the daily challenge keeps me coming back.”
— Beta Tester
“Hints are subtle but effective — I’m actually learning techniques.”
— Early Access Player

Simple Pricing

Pick a tier that matches your play style.

Free
$0
  • • 5 puzzles/day
  • • 50 lifetime puzzles
  • • Light ads
Most Popular Pro
$19
  • • Unlimited puzzles
  • • Ads: 1/hour cap
  • • Daily mode + stats
Plus
$29
  • • Everything in Pro
  • • Premium themes & sounds
  • • Priority support
FeatureFreePro $19Plus $29
Unlimited puzzles✖︎✔︎✔︎
Daily Challenge + StatsLimited✔︎✔︎
Ad frequencyLight1/hour capPremium partners
Premium themes & sounds✖︎✖︎✔︎
Priority support✖︎✖︎✔︎

Frequently Asked

Does it work offline?
Yes — the Windows desktop version runs fully offline. Daily mode & updates need a connection.
What’s the deal with ads?
Free: light ads. Pro: 1/hour cap. Plus: premium partners only.
How does licensing work?
SmithLocker ensures fair use with tier display and optional device checks.
Can I export my progress?
Yes — local stats are built in. Cloud sync is on our roadmap.