# Lock Shape vs Math Devil

The clearest difference is monetization model: Lock Shape at free against Math Devil's ad-supported. Math Devil's advantage is iOS requirement (12.0 vs 15). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Lock Shape ships an update every 20 months, Math Devil daily. The most recent releases landed on September 25, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Lock Shape | Math Devil |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/math-devil-a-troll-level-game/id6742674755/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 20 months | **Daily** |
| Monetization | **Free** | Ad-supported |
| Size | 12 MB | 134 MB |
| Requires iOS | 15 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kunal rameshbhai](https://appshunter.io/developer/1117340195) | [友洲 陈](https://appshunter.io/developer/1037704522) |

## What reviewers say

### Lock Shape

[App page](https://appshunter.io/ios/app/lock-shape/id6450044382)

Test your reflexes and focus in this challenging shape-matching game. Spin the octagon to align with incoming shapes and aim for the highest score. It's easy to learn but incredibly difficult to master, offering an addictive experience.

**Highlights:** Shape matching gameplay, Precision tapping controls, High score challenges, Addictive gameplay loop, Free to play

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Math Devil

[App page](https://appshunter.io/ios/app/math-devil-a-troll-level-game/id6742674755)

A challenging 2D platformer that combines difficult levels with math-based puzzles. Navigate traps and solve problems involving various mathematical concepts to progress. It offers a unique test of both reflexes and intellect.

**Highlights:** Challenging 2D platformer gameplay, Math puzzle integration, Multiple difficulty levels, Variety of math concepts covered, Trap-filled environments

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Lock Shape free?

Lock Shape is free to download, with no in-app purchases.

### Is Math Devil free?

Math Devil is free to download, with no in-app purchases.

### Do Lock Shape or Math Devil have ads?

Both Lock Shape and Math Devil show ads.

### Which is updated more often, Lock Shape or Math Devil?

Lock Shape ships an update every 20 months, and Math Devil daily. Most recently, Lock Shape was updated on September 25, 2026 and Math Devil on October 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*