I love Iodoku!
Final an app that turns my boredom into brilliance! Smooth design, smart hints, and just the right level of challenge. My brain has never been happier!
Free
In-App PurchasesWith Ads
About
This intelligent Sudoku app adapts to your skill level with AI-powered puzzles and a personal coach. Learn advanced techniques, track your progress, and enjoy a clean, customizable interface. Offers both free and premium experiences.
✓9 Difficulty Levels
✓AI-Powered Puzzle Generation
✓Personal AI Coach
✓Adaptive Difficulty
✓Interactive Tutorial
✓Detailed Statistics
✓Customizable Themes
Show original description
What's New in Iodoku
2.6
August 18, 2026
What’s New in Version 2.6 Iodoku 2.6 delivers our most ambitious upgrade yet, with deeper puzzles, smarter guidance, and a more polished solving experience. New production-ready Fiendish, Devilish, and Esoteric difficulty levels Original, offline top-tier puzzles built around advanced solving techniques Instant, trusted puzzle loading at every advertised difficulty Progressive hints that guide you from a gentle nudge to a complete explanation Solve Replay records your actual solving journey for review and coaching “Resume My Thinking” restores your context when returning to a game Editorial puzzle collections and curated challenges available offline Improved continuity across the app, widgets, shared puzzles, and saved games A first-run Speed Lesson introduces Iodoku’s efficient input system Expanded VoiceOver support for a complete, accessible solving workflow Smarter difficulty validation, puzzle integrity checks, and training exercises Refined localization and interface polish throughout the app Performance, reliability, and accessibility improvements Every puzzle remains playable offline, with no server connection required.
More2
In-App Purchases
$9.99
Premium Lifetime
Iodoku Premium Lifetime
User reviews
Developer apps
FAQ
Does Iodoku have ads?
Yes, the free version of Iodoku contains advertisements. Users can remove ads by subscribing to the Premium version.
What are the subscription options for Iodoku?
Iodoku offers Premium Monthly for $0.99/month, Premium Yearly for $9.99/year (saving 17%), and a one-time Premium Lifetime purchase for $14.99.
Can I try Iodoku before subscribing to Premium?
Yes, the free version of Iodoku provides full feature access, including all 9 difficulty levels and the complete tutorial system, allowing you to try it before upgrading.
How does Iodoku's adaptive difficulty work?
Iodoku features adaptive difficulty, meaning the puzzles are designed to grow with your skills. The AI calibrates challenges to perfectly match your current level and help you improve.
What age rating does Iodoku have?
Iodoku is rated 4+ and is suitable for players of all ages. It is designed to be accessible for beginners while offering challenges for experts.
How often is Iodoku updated?
The latest version of Iodoku is 1.0.8, and it was last updated on December 10, 2025. Updates typically include improvements and new features.
Can I play Iodoku offline?
The provided data does not specify if Iodoku can be played offline. However, AI-powered features might require an internet connection for puzzle generation and coaching.
What devices support Iodoku?
Iodoku is supported on iPhones and iPads, offering a clean and intuitive interface optimized for these devices.