Comparison

Iodoku vs Nummora

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Iodoku

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.

Highlights
  • 9 Difficulty Levels
  • AI-Powered Puzzle Generation
  • Personal AI Coach
  • Adaptive Difficulty
  • Interactive Tutorial
  • Detailed Statistics
  • Customizable Themes
Features
Read full description

Challenge your mind with Iodoku, a premium Sudoku app built for players who want more than another puzzle grid. Iodoku helps you solve, learn, improve, and track your growth with a clean interface, natural controls, smart coaching, and a full training system designed around real Sudoku logic. WHY IODOKU LEARN WHILE YOU PLAY Iodoku does not just give you answers. Smart hints guide you toward the next logical step, helping you understand why a move works so you can solve more confidently next time. FAST, NATURAL GAMEPLAY Use classic cell-first entry or Iodoku’s faster digit-first play style: tap a number, see matching numbers highlighted on the board, then tap empty cells to place it. It feels quick, focused, and natural. SOLVE REPLAY After a puzzle, review the logical path step by step. See how the board could be solved using verified techniques, not guesses. TRAIN REAL SUDOKU TECHNIQUES Practice strategies from beginner fundamentals to advanced patterns. Iodoku helps you build skill intentionally instead of hoping the next puzzle teaches you something by accident. TRACK YOUR SUDOKU IQ Follow your progress with stats based on logic purity, accuracy, pace, and solving growth. See where you are improving and what to work on next. DAILY LADDER Take on a guided daily path of puzzles and challenges designed to build momentum, sharpen technique, and keep your brain engaged. ACHIEVEMENTS AND LONG-TERM GOALS Earn badges for clean solves, streaks, difficult puzzles, advanced techniques, and long-term mastery. CUSTOM PUZZLES Enter puzzles from books, websites, newspapers, or your own designs. Bring outside puzzles into a smarter solving environment. MULTIPLE GAME MODES Play classic Sudoku or explore thoughtful variations including Large X, I-Mode, Windoku, Color Channels, and more. BUILT FOR EVERY LEVEL Iodoku is for: • Beginners learning Sudoku for the first time • Casual players who want a cleaner daily puzzle • Intermediate players stuck at the same skill level • Advanced solvers looking for serious techniques • Puzzle lovers who enjoy progress, mastery, and logic FEATURES • Multiple difficulty levels from easy to extreme • Smart hints that teach the next logical step • Solve replay with verified logic paths • Sudoku IQ and detailed progress tracking • Daily Ladder challenges • Achievements and badges • Custom puzzle entry • Advanced training mode • Natural digit-first input option • Classic Sudoku controls option • Auto notes and candidate tools • Mistake checking and coaching options • Pause screen that protects the puzzle • Light and dark mode • Custom themes and highlight colors • Left-handed layout support • Localized interface support • Optional premium ad-free experience PREMIUM Iodoku is free to play with optional Premium upgrades. Premium removes ads and supports continued development of new training tools, variants, polish, and advanced Sudoku features. Whether you are solving your first puzzle or trying to master expert techniques, Iodoku is designed to help you think better, solve cleaner, and enjoy the process. Download Iodoku and start building your Sudoku mind. Terms of Use: https://arcofdescent1.github.io/iodoku-legal/terms.html Privacy Policy: https://arcofdescent1.github.io/iodoku-legal/privacy.html

About

Nummora

Features
Read full description

Sharpen your mind with Nummora, a beautifully crafted Sudoku experience for every skill level. From your first puzzle to expert-level challenges, Nummora delivers a polished, immersive experience right in your pocket. FOUR DIFFICULTY LEVELS Pick the challenge that matches your skill: - Easy — 46 givens, perfect for learning the ropes - Medium — 36 givens, a balanced and satisfying challenge - Hard — 30 givens, for experienced players - Expert — 24 givens, the ultimate brain teaser Each difficulty has its own scoring system with time bonuses, so every puzzle rewards focus and speed. SMART HINTS THAT TEACH Unlike ordinary number puzzle hints, Nummora explains WHY a number belongs in a cell. Learn 8 real Sudoku techniques as you play: - Last Remaining in Row, Column, or Box - Naked Single detection - Hidden Single in Row, Column, or Box - Advanced Technique deduction Each hint shows the technique name and a clear explanation so you actually improve your logic skills, not just fill in answers. DAILY CHALLENGES & STREAKS A fresh puzzle awaits you every day. Complete daily challenges to build your streak and develop a powerful daily habit. Watch your streak counter climb and stay consistent day after day. POWERFUL TOOLS AT YOUR FINGERTIPS - Notes Mode — Use pencil marks to track candidates in every cell - Smart Hints — Get hints with real technique explanations - Undo — Reverse your last move instantly - Erase — Clear a cell and start fresh - Auto-Check Errors — Catch mistakes in real time as you play - Smart Highlighting — Same numbers, rows, columns, and boxes light up as you select cells FEEL EVERY MOVE Haptic feedback on every tap, sound effects for correct placements and mistakes, and glow animations when you complete a row, column, or box. Everything is fully customizable in Settings. LEVEL UP & EARN ACHIEVEMENTS Your score grows with every puzzle you complete. Climb through 8 rank titles from Beginner all the way to Sudoku Master. Unlock achievements like Speed Demon, No Mistakes, and 30 Day Streak as you improve. TRACK YOUR PROGRESS Dive into detailed statistics that show your growth: - Games played, win rate, and average completion time - Personal best times for every difficulty level - Current and longest streaks - Recent activity log with your latest results 8 STUNNING BOARD THEMES Personalize your board with beautifully designed themes: Classic, Ocean Deep, Sunset Blaze, Emerald Forest, Midnight Gold, Rose Petal, Arctic Frost, and Volcano. AVAILABLE IN 13 LANGUAGES Play in your preferred language — English, Japanese, Chinese, Korean, Spanish, Portuguese, German, French, Italian, Russian, Turkish, Arabic (with RTL support), and Hindi. BUILT FOR EVERY PLAYER - Interactive 7-step tutorial walks beginners through every feature - How to Play guide available anytime from the game board - Customizable mistake, hint, and undo limits to match your play style - Optimized for both iPhone and iPad - Fully offline — no internet connection required to play - Auto-save, timer with pause, and share your results with friends Disclaimer: Some features and game modes are available only with an in-app purchase or an active subscription. Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Privacy Policy: https://sites.google.com/view/ub-web/privacy-policy Terms and Conditions: https://sites.google.com/view/ub-web/terms-of-use Download now and start training your brain today.

Screenshots

Iodoku4 screens
Nummora4 screens

Verdict

The call

The clearest difference is ads: Nummora at none against Iodoku's shown. Nummora also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Iodoku sells 2 one-off in-app purchases and Nummora sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Iodoku ships an update every 2 weeks, Nummora weekly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
Iodoku versus Nummora: the parameters behind the verdict, then further details
ParameterIodokuNummora
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 weeksWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size12 MB7 MB
Age rating4+4+
DeveloperDavid SeppiUday Bodar

In-app purchases

2 purchases

Iodoku

One-time2
  • Iodoku Premium (Lifetime)$4.99
  • Premium Lifetime$9.99
2 purchases

Nummora

Subscriptions2
  • Pro Monthly3 Days trial$4.991 Month
  • Pro Yearly7 Days trial$29.991 Year

Questions

Is Iodoku free?
Iodoku is free to download, with in-app purchases available.
Is Nummora free?
Nummora is free to download, with in-app purchases available.
Do Iodoku or Nummora have ads?
Iodoku shows ads; Nummora does not.
Which is updated more often, Iodoku or Nummora?
Iodoku ships an update every 2 weeks, and Nummora weekly. Most recently, Iodoku was updated on October 30, 2026 and Nummora on November 5, 2026.

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