X vs Quiet Letters

X-Sudoku — Logic Puzzles Game Train your mind with the most elegant puzzle game on the App Store. X-Sudoku offers hundreds of hand-graded puzzles across two distinct variants, built for players from first-timers to seasoned solvers. Two Variants. One Obsession. Classic 9×9 — The timeless grid. Fill every row, column, and 3×3 box with the digits 1 through 9. Pure logic. No guessing required. X-Sudoku — An additional twist: both main diagonals must also contain all nine digits. 18 extra constraints. Entirely new strategies. Five Difficulty Levels From Easy (~10 min) to Epic (~45+ min), each difficulty unlocks as you progress. Whether you have a few minutes or a long commute, there's a puzzle for you. Earn Points. Climb Titles. Every solve earns points based on your speed, mistakes, and streak. Rise through 20 titles — from Student to Immortal. Daily Challenges A fresh puzzle every day. Solve it to earn bonus points. Keep a 7-day streak to double your daily rewards. Perks System Earn perks by solving puzzles: use a Hint to reveal a cell, Chance for an extra mistake, Forgive to wipe your record clean, or Double Points to maximise your score. Clean. Focused. No clutter. Elegant typography, a paper-toned palette, and smooth animations keep the focus on the puzzle. Visit our website for more information and our privacy policy: https://x-sudoku.com/privacy/

Quiet Letters is a calm word-puzzle game. Each round you have a fixed number of guesses to find the hidden word. Tiles light up to tell you which letters belong, which are misplaced, and which are out. No timer, no streak penalty, no noise — just letters and time to think. Three modes: • Mini — 4 letters, 5 guesses. A short break. • Classic — 5 letters, 6 guesses. The puzzle you know. • Wide — 6 letters, 7 guesses. A slower read. Each mode plays Daily (one shared puzzle per day) or Practice (unlimited rolls), with an optional Hard mode that locks in revealed letters. Seven languages, each with its own keyboard and word list: English, French, Spanish, German, Italian, Portuguese, Dutch. Five themes — Light, Dark, Paper, Dusk, and a colour-blind-friendly Accessible palette — plus shape marks on every tile so the game stays readable for every kind of vision. Soft ambient music and gentle haptics. Every sound has a tap-mute on the Home screen, no settings dive needed. An optional daily reminder nudges you back at the time you choose. No ads. No tracking. No accounts. Your stats live on this device only.