WillRule vs MJ101
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
WillRule
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DevPixel is a simple and lightweight utility tool designed for developers and UI designers. It helps handle common conversion and text processing tasks in one place, with a clean and easy-to-use interface. The app supports conversion between common UI units including px, rem, em, and dp. It is useful for building consistent layouts across different screen sizes and platforms, and serves as a quick reference during design and development. DevPixel also provides text hash generation tools. Users can generate standard hash outputs such as MD5, SHA-1, and SHA-256 from input text. These features are intended for general development reference and testing purposes. Key Features: Convert between px, rem, em, and dp units Generate text hash outputs (MD5, SHA-1, SHA-256) Fast and simple input-to-result workflow Clean and minimal user interface Designed for UI design and development reference Works offline for core functions DevPixel focuses on essential utility functions without unnecessary complexity. It is designed to support quick daily tasks for developers and designers. The app does not require user registration and does not collect personal data. All operations are performed locally on the device.
MJ101
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MJ101 is a casual tile-based game inspired by traditional Mahjong-style rules. Instead of simple matching, MJ101 focuses on understanding how Mahjong combinations work through interactive play. The experience is built around three core interaction typesβChi, Peng, and Gangβwhich help form different tile combinations as you progress through each stage. Chi represents sequence building, where tiles connect in order. Peng represents matching sets of identical tiles. Gang represents a complete set that triggers a stronger clearing effect. By using these mechanics, players naturally learn how Mahjong-style patterns are formed in a simple and intuitive way. Each stage is designed as a structured scenario with a clear goal. Early stages introduce basic Chi and Peng interactions. Later stages gradually add more complex layouts where Gang combinations and multi-step thinking become more important. This creates a smooth progression where each level builds on what you have learned before. Features: Rule-based gameplay inspired by traditional Mahjong combinations Chi, Peng, and Gang mechanics explained through interactive play Step-by-step progression from basic to advanced patterns Clean tile layouts designed for clear visual understanding Scenario-based stages with different combination goals Short levels designed for quick play sessions Gradual introduction of new mechanics through gameplay Combo-based clearing system with chain reactions Offline supported for flexible play anytime MJ101 is designed as an easy way to experience Mahjong-style rules in a structured environment. The focus is on understanding how combinations are formed and how different moves affect the board, rather than relying on randomness or external systems. The visual design uses clean tile arrangements and clear spacing to make each stage easy to read. Every layout is carefully structured so players can quickly recognize possible combinations and make decisions based on logic and pattern recognition. MJ101 does not rely on chance-based systems. Progress is based entirely on understanding rules and applying them step by step within each stage. If you enjoy calm, rule-based gameplay that gradually teaches you how combinations work through interaction, MJ101 offers a simple and structured experience you can enjoy at your own pace.
Screenshots
Verdict
WillRule and MJ101 are too close to call on the numbers: across 6 compared parameters β price, update cadence, ads and in-app purchases among them β neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.
| Parameter | WillRule | MJ101 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod β better | iPhone |
| Requires iOS | 15.1 β better | 16.4 |
| Further details β not scored | ||
| Size | 55 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Parlak Kaner | Murat Kar |
In-app purchases
WillRule
No in-app purchases
MJ101
No in-app purchases








