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A quiet iPhone tile-matching game with hand-tuned ink tiles, offline play, and optional one-time theme unlocks.
Quiet puzzle game
Sumi Mahjong
A quiet iPhone tile-matching game with hand-tuned ink tiles, offline play, and optional one-time theme unlocks.
- Platform
- iPhone / iOS / Game
- Status
- App Store / No ads / No tracking
- Audience
- Players who like lightweight puzzle games without ads, stamina systems, or leaderboard pressure.
- Support
- Email support
- Legal
- Privacy Policy / Terms of Service
Product Overview
Sumi Mahjong is positioned as A no-ads, no-account, no-tracking ink-style Mahjong matching game.
It currently lives across iPhone / iOS / Game, with public status marked as App Store / No ads / No tracking. This page keeps the download path, repository, privacy boundary, support contact, and build diary under one domain.
Normal play does not require network access. Optional purchases are handled by Apple StoreKit.
- Platform
- iPhone / iOS / Game Current status: App Store / No ads / No tracking
- Audience
- Players who like lightweight puzzle games without ads, stamina systems, or leaderboard pressure. The page explains the product in user-facing language, not just developer notes.
- Privacy
- No personal data collected by the product itself Normal play does not require network access. Optional purchases are handled by Apple StoreKit.
- Build record
- Connected to product diaries The product is also used as a reusable teaching case.
Why It Matters
Each product page is written for users, reviewers, and builders: what it solves, what it does not solve, and what can be reused.
Trust boundary
Normal play does not require network access. Optional purchases are handled by Apple StoreKit.
Reusable learning asset
Related course hooks include iOS small game, StoreKit 2, No-ads product design, Multilingual launch.
Core Experience
144 hand-tuned ink Mahjong tiles
This is one of the public-facing capabilities or lessons used to explain Sumi Mahjong clearly to users, reviewers, and future readers.
Classic two-turn matching rule
This is one of the public-facing capabilities or lessons used to explain Sumi Mahjong clearly to users, reviewers, and future readers.
Undo, hint, and shuffle
This is one of the public-facing capabilities or lessons used to explain Sumi Mahjong clearly to users, reviewers, and future readers.
No ad SDKs, accounts, or third-party tracking
This is one of the public-facing capabilities or lessons used to explain Sumi Mahjong clearly to users, reviewers, and future readers.
Design Principles
Keep the public promise narrow
The page should only promise what the current product, review state, and distribution channel can actually support.
Make privacy inspectable
Normal play does not require network access. Optional purchases are handled by Apple StoreKit.
Turn the build into teaching material
The product page and diary series should help other builders understand the decisions, tradeoffs, launch work, and mistakes behind the result.
Build Diary
The diary records the product from idea, design, implementation, review, launch, operations, and post-release learning.
iOS small gameStoreKit 2No-ads product designMultilingual launch
View all build notes 2026-06-20 Sumi Mahjong · Market Research 2026-06-19 Sumi Mahjong · IOS Game 2026-06-18 Sumi Mahjong · Painpoint To Spec 2026-06-18 Sumi Mahjong · Brand Identity 2026-06-17 Sumi Mahjong · UI Boundaries 2026-06-17 Sumi Mahjong · Architecture Boundaries 2026-06-16 Sumi Mahjong · Rules Generator 2026-06-15 Sumi Mahjong · Replayability Layout
Privacy and Support
Normal play does not require network access. Optional purchases are handled by Apple StoreKit.