KrossHall — Sudoku & crossword

Thirteen grid puzzles, solo, in pencil. No network, no account, no ads, no in-app purchases.
NUMBERS AND LOGIC
Sudoku · Killer Sudoku · Kakuro · Calcudoku · Futoshiki · Binairo · Str8ts · Nonogram
Full rules, not lightened versions: killer sums its cages without a single printed digit, str8ts asks for runs in any order, binairo forbids three symbols in a row and counts its columns, and a nonogram is deduced line by line — never guessed.
LETTERS AND WORDS
Crossword · Arrow Words · Fill-Ins · Word Search · Guess the Word
Five languages, five word lists: clues and answers are written for each language, never translated from another.
ONE GRID, ONE SOLUTION — AND IT IS PROVEN
No grid is published without being checked: the generator looks for a second solution and refuses the grid if it finds one. A grid with two solutions is not a hard grid, it is a broken one, and the player stuck on it has no way of knowing.
FOUR DIFFICULTIES
Ten of the thirteen games are chosen as easy, medium, hard or expert before the grid opens. What changes is the depth of reasoning required, never the rules.
EVERYTHING IS OFFLINE
On the underground, on a plane, out in the country. The app asks for no account and opens no connection. Your grids and your statistics live on your device, and nowhere else.
An interrupted grid waits for you: a "Resume" card appears next to the difficulties, and you choose.
WHAT ELSE IS IN THERE
• A rules booklet for all thirteen games, readable mid-grid
• Pencil and eraser: candidates are noted just as on paper
• Per-game statistics, and achievements to hunt down
• Five languages: English, French, German, Spanish, Italian
• A sheet of ruled paper, crisp on every screen