# Ninefold

> Ad-free Sudoku with 25,000 puzzles, daily challenges, and offline play

- **Website**: https://ninefold.gentleflow.app
- **Uneed Page**: https://www.uneed.best/tool/ninefold
- **Pricing**: Freemium
- **Category**: Personal Life
- **Tags**: Habits, Fun, Happiness
- **Submitted by**: @gentleflowoverseas
- **Launch Date**: 2026-11-08

## About

Ninefold is an ad-free Sudoku app for iOS, Android, and HarmonyOS. It offers 25,000 validated puzzles across five difficulty tracks, guided lessons, daily challenges with an archive, and an endless Hell mode. Every board is checked for a unique solution.

Play offline without an account. Optional Premium upgrades add convenience features, extra themes, and sync; availability varies by platform.