Killer Sudoku: No Ads, Offline

Killer sudoku with no ads at all. Not a banner, not a video between puzzles, not one to unlock today's puzzle. No account, no lives, no energy, no subscriptions. EVERY PUZZLE HAS ONE SOLUTION, AND NEEDS NO GUESSING All 2,800 free puzzles (2,000 to choose from, plus a year of daily puzzles and a weekly challenge) were checked by a solver before they shipped: exactly one answer, reachable by logic alone. HINTS THAT TEACH Stuck? A hint first shows where to look. Tap Why and it explains the reasoning: a cage with only one combination, the last cell of a cage, a digit with only one place to go, the rule of 45. Only then does it place the digit. Nine short illustrated lessons and a cheat sheet of cage combinations are one tap away, and newcomers can play a guided first puzzle. LEVELS THAT MEAN SOMETHING Each level is decided by the techniques a puzzle actually needs, and the app tells you what they are. • Easy: singles and cage combinations • Medium: the rule of 45 on rows, columns and boxes • Hard: the rule of 45 across several rows, pairs, triples and pointing • Expert: what-if reasoning on cells with only two choices left A NEW PUZZLE EVERY DAY, A NEW CHALLENGE EVERY WEEK The same daily puzzle for everyone, gentle on Monday and Expert at the weekend. A calendar stamps every day you solve, and you can catch up on past dailies. Every Monday brings seven new weekly puzzles from Easy to Expert. Streaks are gentle: every 7 days in a row saves a rest day, used automatically if you miss one. MADE TO FEEL GOOD • Rows, columns, boxes and cages glow as you complete them, and the board ripples when you solve it • Soft wooden sounds, each digit its own note (they follow your silent switch) • 26 trophies to collect and ranks from Novice to Grandmaster • Six colour themes: Classic, Paper, Ocean, Forest, Sakura and Night OPTIONAL EXTRAS, BOUGHT ONCE • Master Pack: 500 puzzles harder than Expert, with bigger cages and two or more what-ifs in a row • Theme Collection: eight more colour themes • Supporter Bundle: both together Nothing in the free game is locked or limited. Extras are one-time purchases, not subscriptions. TOOLS FOR SOLVING, NOT FOR HAND-HOLDING • Two keypads: big digits answer, small digits take notes. No mode switching. • Drag across cells to select them, then note a digit in all of them at once. • Select whole cages and see their total, so the rule of 45 needs no mental arithmetic. • Every combination a cage could use, one tap away. Cross out the ones you have ruled out. • Auto notes, auto-remove notes, undo and redo, same-digit highlight. • Mistake checking is a setting: off by default, and it stays how you left it. EASY ON THE EYES Dark mode, colour themes, three digit sizes, a high-contrast board and optional coloured cages. Works on iPhone and iPad, in portrait or landscape on iPad. NOW IN 8 LANGUAGES English, Japanese, Korean, Traditional Chinese, French, German, Portuguese and Spanish, hints and lessons included. YOURS, ON YOUR DEVICE Works fully offline: on a plane, underground, anywhere. Your games, statistics and trophies are saved after every move and stay on your device. Privacy Policy: https://sevonic.com/privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/