# Sudoku Sagax — Puzzles, ranks and challenges > Puzzles, ranks and challenges (iPhone/iPad app by Vulpes Sagax UG (haftungsbeschränkt).) - Source: https://appshunter.io/ios/app/sudoku-sagax/id6806632741 (this page in markdown: same URL + `.md`) - Developer: [Vulpes Sagax UG (haftungsbeschränkt)](https://appshunter.io/developer/6806632743) - Category: Games, Puzzle - Price: Free - Age rating: 12+ - Requires: iOS 15.0 · 20 MB - Languages: American English, German (Germany) - Released: 2026-09-05 - Data updated: 2026-09-14 - User reviews in markdown: https://appshunter.io/ios/app/sudoku-sagax/id6806632741/reviews.md ## What is Sudoku Sagax? Sudoku Sagax is Sudoku with real progression: solve levels, collect points and stars, climb through 19 fox ranks and take on everyone else in the daily challenge. Nona the vixen shows you around and explains every new puzzle type in half a minute. ELEVEN PUZZLE TYPES • Sudoku in four difficulties, from Easy to Extreme • Killer Sudoku, Kakuro, Nonogram, Crowns, Binary puzzle • X-Sudoku, Jigsaw Sudoku, Mini 6x6 and the big 16x16 • Foxhold: Sudoku as tower defence, our very own game Every type has its own levels, its own best times and its own leaderboard. Each type and tier holds 800 levels. DAILY CHALLENGE AND STREAKS One puzzle a day, the same for everyone, with its own daily leaderboard. Solve on consecutive days and your streak grows. Streak shields cover a missed day, so a busy calendar does not undo weeks of work. RANKS, STARS, ACHIEVEMENTS Every solved level counts towards your rank: 19 tiers from Fox Cub to Sagax Immortalis, each with its own fox portrait as a profile picture. Add up to three stars per level and 39 achievements. DUELS AGAINST FRIENDS After a win, challenge someone with a link: they play exactly the same puzzle against your time. No account needed on their side. THOUGHT THROUGH IN DETAIL • Notes, eraser, undo and a hint system that is honest about its cost • Mistakes shown instantly or only at the end, your choice • Digit-first mode for fast entry • Light and dark themes, English and German • Puzzles are generated locally, so a dead spot will not stop you You can start playing without an account. With a free account (sign in with Google or Apple), your progress, streak and leaderboard position follow you across devices, including between app and browser. Sudoku Sagax is free, with no ads and no in-app purchases. The den is open. How far will you get? ## Version history (last 5 releases) ### 1.1.6 — 2026-09-13 On iPhone there was suddenly far too much space at the top. The app was insetting the content itself and the interface was doing it again; now only one of them does. In landscape, nothing hides behind the cameras any more. The pencil marks in Killer are back to the same size as everywhere else. In cells with a cage sum they were smaller and squeezed; now the sum is smaller instead of the marks. The leaderboard on the home screen shows the top 20 and tells you how many there are in total. The leaderboard screen now has pages, with a jump to your own place. ### 1.1.5 — 2026-09-13 On iPhone the top bar sat under the status bar: the back button, your picture and the settings gear were hidden behind the clock and the battery. Fixed, on iPhone and iPad. The home screen is back the way it was: news and feedback at the top, leaderboards and stats back in the progress card. The puzzle types are two per row again on phones, with large pictures. ### 1.1.4 — 2026-09-11 Puzzles you started now appear in one box on the home screen, for every type. Before, six of them had their own strip and five had none at all. The home screen starts with the game again: daily challenge on top, leaderboards and stats right below, the puzzle types more compact. For Mini and 16x16 the win screen showed different points than the ones that were saved. Both agree now. Offline, a result was reported as not saved even though it was queued and arrived later. In landscape the bottom row of the board was cut off. And if you turned off mistake highlighting and filled the board with one wrong digit, you now get an answer instead of silence. ### 1.1.3 — 2026-09-09 On some devices the app header sat underneath the phone's status bar: the clock covered the logo, the battery indicator covered the settings icon, and settings could no longer be opened. The interface now keeps clear of it. Plus smaller corrections to texts and links. ### 1.1.2 — 2026-09-08 This version fixes four things that got in the way while playing. An accidental double tap on a cell no longer zooms the screen, and cell selection responds without delay again. Pinch to zoom still works. In Killer, the cage sum covered the pencil marks underneath it, the 1 in particular. The marks now sit below the sum and stay readable. Feedback can now be sent from inside the app as well. Also new: eleven profile pictures free for everyone, independent of your rank. And after a Foxhold run, the game now tells you what cost you the third star. --- *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 2026-09-14.*