# Sudoku Lab: Number Puzzle

> 4 Levels. Daily. Zen. Hardcore

Canonical page: [https://chrome-stats.com/d/id6764198449](https://chrome-stats.com/d/id6764198449)

## Overview

- **ID:** `id6764198449`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Wellington Peres
- **Category:** Puzzle
- **Version:** 1.6.1
- **Last updated:** 2026-08-30
- **First published:** 2026-04-28
- **Size:** 43 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/sudoku-lab-number-puzzle/id6764198449)
- **Website:** [https://niollab.com](https://niollab.com/)
- **Privacy policy:** [https://niollab.com/privacy](https://niollab.com/privacy)

## Description

Zen and Hardcore now live in the Play menu. Cleaner home screen, clearer hints, and a Rate button that finally works.

Sudoku Lab is a clean, focused free Sudoku game for iPhone and iPad. Master 4 difficulty levels, beat the Daily Challenge, and track your streaks.

FOUR GAME MODES
 • Classic — 4 difficulty levels (Easy, Medium, Hard, Expert)
 • Daily Challenge — same puzzle for every player, every day. Build your streak.
 • Zen Mode — practice freely, no lives, no pressure
 • Hardcore — unlock by completing 10 Expert puzzles. One mistake = game over.

BUILT FOR FOCUS
 • Pencil marks (notes) for advanced play
 • Auto-notes shortcut
 • Unlimited undo
 • Hints when you're stuck
 • Conflict highlighting
 • Lives system (3 strikes in Easy/Medium, 2 in Hard/Expert)

TRACK YOUR PROGRESS
 • 34 achievements to unlock
 • Best times per difficulty
 • Daily streak tracker
 • Detailed stats per mode

FREE TO PLAY
Sudoku Lab is free, supported by ads: a banner on the home screen and an ad between games. Inside a puzzle, an ad only plays if you choose to watch one — for a hint or an extra life. No signup, no subscription — your progress is saved on your device.

ABOUT NIOL
Sudoku Lab is a title from NIOL studio — also makers of Block Lab, a block puzzle game.

Built with care for puzzle lovers.

## Rankings

- #1,950,024 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6764198449)