# Sharkdoku: Sudoku-Style Logic — Ad Free Play, Offline Puzzles > Numberless logic puzzle game with shark placement rules, playable offline. (iPhone/iPad app by Gray Software Solutions, LLC.) - Source: https://appshunter.io/ios/app/sharkdoku-sudoku-style-logic/id6809009166 (this page in markdown: same URL + `.md`) - Developer: [Gray Software Solutions, LLC](https://appshunter.io/developer/1447750870) - Category: Games, Board, Puzzle - Price: Free with in-app purchases - Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 489 MB - Languages: American English - Released: 2026-09-21 - Data updated: 2026-10-25 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/sharkdoku-sudoku-style-logic/id6809009166/reviews.md ## What is Sharkdoku? Sharkdoku is a numberless twist for fans of ad-free Sudoku and relaxing logic puzzles. Enjoy ad-free play with no banners and no automatic ads between levels. Optional rewarded videos are available only when you choose extra help. SHARKS INSTEAD OF NUMBERS Find a home for every shark using three simple rules: • One shark in each color region. • One shark in every row and column. • Sharks cannot touch, even diagonally. Use Sudoku-style deduction to rule out squares and find the next safe move. Tap to mark a square. Double-tap the same square to place a shark. No number calculations needed. AN ENDLESS OCEAN OF PUZZLES A guided first level gets you started. Then explore endless, uniquely solvable puzzles with varied layouts and boards growing to ten sharks. Every level is free to play, with no subscription or paid puzzle packs. OFFLINE, AT YOUR PACE Play offline with no puzzle timer. Your board, notes, level, pearls and supplies are saved on your device, ready when you return. There is no energy timer or wait for lives to refill. Run out of squid lives? Restart immediately for free, as often as you like. A LITTLE HELP, YOUR CHOICE Start with five Hints and five Reveals. A Hint explains the next safe move; a Reveal places a shark. When supplies run out, you can choose a rewarded video for another hint, reveal or three squid lives. Videos require an internet connection and availability. You can keep solving and restarting without watching them. A DAILY REASON TO DIVE BACK IN Complete a new level each day to collect a fin. A seven-day streak unlocks a mystery chest of free hints or reveals. Optional local reminders can help you keep your streak going. A TIP, NEVER AN UNLOCK Enjoying your time in the ocean? The optional Tip jar lets you support the developer. Tips grant no hints, reveals, lives, levels or other gameplay benefits. Puzzle play stays free whether you tip or not. Find the sharks. Enjoy the splash. Keep playing your way. ## Key features - Numberless logic puzzles - Shark placement mechanics - Offline play - No timers or energy limits - Daily challenges - Optional rewarded videos for help ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Ads Off | $3.99 | one-time | | A whale of a thanks | $5.00 | one-time | | Buy me a coffee | $3.00 | one-time | | A little splash | $1.00 | one-time | ## Is Sharkdoku safe? Not enough ratings yet to assess Sharkdoku. ## Is Sharkdoku legit? Sharkdoku: Sudoku-Style Logic appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Sharkdoku is 75 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/sharkdoku-sudoku-style-logic/id6809009166/reviews.md ### 5/5 — Fin-tastic sudoku game!!!! *2026-09-29* Great brain puzzle game for sudoku lovers! I especially like the slide feature for “x”ing out spaces. It’s weirdly satisfying! ### 5/5 — Winner *2026-09-23* Love this game! ## Frequently asked questions about Sharkdoku ### What is Sharkdoku? Sharkdoku is a logic puzzle game that uses sharks instead of numbers, following rules similar to Sudoku. It offers a numberless twist for players who enjoy relaxing logic challenges. ### Does Sharkdoku have ads? Sharkdoku offers ad-free play with no banners or automatic ads between levels. Optional rewarded videos are available only when you choose to get extra help. ### Can I play Sharkdoku offline? Yes, Sharkdoku can be played offline. Your progress, notes, and supplies are saved on your device, allowing you to play at your own pace without an internet connection. ### How do I place sharks in Sharkdoku? To place sharks, you must ensure one shark is in each color region, row, and column, and that sharks do not touch, even diagonally. Tap to mark a square and double-tap to place a shark. ### Is Sharkdoku free to play? Yes, every level in Sharkdoku is free to play. There are no subscriptions or paid puzzle packs required to access the game's content. ### How does Sharkdoku compare to Sudoku? Sharkdoku offers a similar deductive reasoning experience to Sudoku but replaces numerical logic with spatial placement rules for sharks, making it a numberless alternative. ### What is the age rating for Sharkdoku? Sharkdoku has an age rating of 4+, making it suitable for a wide range of players. ### How often is Sharkdoku updated? The latest version of Sharkdoku is 1.2.8, and it was last updated on October 8, 2026. Updates typically bring new puzzles and improvements. ## Version history (last 5 releases) ### 1.2.8 — 2026-10-08 Your ocean, uninterrupted. • No banners or automatic ads between levels. • A one-time welcome-back message thanks returning players. • An optional Tip jar lets you support the developer, with no gameplay unlocks or benefits. Every puzzle remains free to play. Rewarded videos for hints, reveals and extra squid lives remain entirely your choice. ### 1.2.7 — 2026-10-01 Simplified onboarding. ### 1.2.6 — 2026-09-30 Improved onboarding flow. ### 1.2.3 — 2026-09-28 Gameplay analytics now starts after privacy-policy acceptance so tutorial and early-level progress can be measured more reliably. Gameplay analytics remains separate from advertising tracking and can be turned off in Settings. This update also includes reliability improvements. ### 1.2.0 — 2026-09-25 Celebrate each correctly completed row and column with a cheerful new animation. Enjoy a smoother tutorial and your Reef Climb introduction after level 10. Squid Points now display as whole numbers for every player, including after reopening the game. Includes polish and reliability fixes. ## Apps similar to Sharkdoku | App | Rating | Price | Category | | --- | --- | --- | --- | | [Let's Sort!](https://appshunter.io/ios/app/lets-sort/id6807185866) | 5.0 (4) | Free | Games | | [Monodoku: Logic Puzzle](https://appshunter.io/ios/app/monodoku-logic-puzzle/id6809939717) | 4.8 (19) | Free | Games | | [Pirates Brawl](https://appshunter.io/ios/app/pirates-brawl/id6758730596) | 1.0 (1) | Free | Games | | [JackOf Hearts: Card Puzzle](https://appshunter.io/ios/app/jackof-hearts-card-puzzle/id1326480995) | 3.3 (4) | Free | Games | | [Blade Rush](https://appshunter.io/ios/app/blade-rush/id6753265161) | 5.0 (1) | Free | Games | | [Barndoku!](https://appshunter.io/ios/app/barndoku/id6814928228) | 4.6 (90) | Free | Games | ## More apps by Gray Software Solutions, LLC - [Gift Sense](https://appshunter.io/ios/app/gift-sense/id1447751099) - [Spin 2 Win - Social Gambling](https://appshunter.io/ios/app/spin-2-win-social-gambling/id1472351479) - [BlackJack: 21 - Ad-Free Rounds](https://appshunter.io/ios/app/blackjack-21-ad-free-rounds/id6505026606) - [Patience: Clock Solitaire](https://appshunter.io/ios/app/patience-clock-solitaire/id6751148241) - [Scoundrel - Card Dungeon](https://appshunter.io/ios/app/scoundrel-card-dungeon/id6771086806) - [Kinetic: Physics Puzzles](https://appshunter.io/ios/app/kinetic-physics-puzzles/id6804845437) All apps by Gray Software Solutions, LLC: https://appshunter.io/developer/1447750870 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-25.*