# Odd Machines vs PRISM

The clearest difference is price: Odd Machines at Free against PRISM's $1.99. PRISM's advantage is review sentiment (100% vs 61%) and in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Odd Machines is free to download; PRISM costs $1.99 up front. Odd Machines sells 3 one-off in-app purchases. PRISM asks for nothing beyond the download.

Odd Machines ships an update every 2 months, PRISM every 4 days. The most recent releases landed on November 4, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Odd Machines | PRISM |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.3 (89 ratings)](https://appshunter.io/ios/app/odd-machines-mechanical-boxes/id6737251986/reviews)** | — |
| Number of ratings | **89** | — |
| Positive reviews | 61.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#123** |
| Size | 436 MB | 4 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [XSGames](https://appshunter.io/developer/1725979641) | [에이드리븐 주식회사](https://appshunter.io/developer/1655290007) |

## What reviewers say

### Odd Machines

[App page](https://appshunter.io/ios/app/odd-machines-mechanical-boxes/id6737251986)

Embark on a 3D escape room adventure as a treasure hunter seeking a lost artifact. Solve intricate mechanical puzzles, uncover hidden objects, and unravel mysteries within an ancient temple. Collect fragments of a powerful stone to escape.

**Highlights:** Solve unique puzzle boxes, Explore an ancient temple, Collect fragments of a lost stone, Immersive audio experience, Multi-language support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game | $3.99 | one-time |
| Unlock Full Game + Coffee | $4.99 | one-time |
| Unlock Full Game + Love | $7.99 | one-time |

**What reviewers like**

- 🤔 Makes you think
- 💡 Ingenious puzzles
- ✨ Beautiful graphics
- 🎶 Soothing sounds and music
- 🎯 Logical puzzles

**What reviewers complain about**

- 🤏 Tiny text size
- 🖱️ Frustrating click accuracy
- ❓ Clues sometimes random
- 💰 Overpriced for content
- 🚫 Game doesn't work

**Reported bugs**

- No stone to collect from 5th window
- Game closes immediately on 'play'
- Bug in first machine, stone disappears
- Cannot zoom on puzzle
- Cannot actuate dials

**Requested features**

- Full game should be free
- Monocle usable at zoomed out level
- More visual feedback for puzzle completion
- Option to get the answer when hint isn't enough
- More levels/unlimited levels


### PRISM

[App page](https://appshunter.io/ios/app/prism-light-puzzle/id6803019903)

**Currently charting:** #123 Top Paid · Board (US App Store)

A logic puzzle game where players manipulate light beams by rotating pieces to illuminate crystals with specific colors. It features 240 unique, machine-proven puzzles across six chapters, teaching real optics principles.

**Highlights:** Light beam manipulation, Color matching puzzles, 6 chapters with 240 levels, Real optics principles, No ads or in-app purchases, Offline play

**In-app purchases:** none


## Frequently asked questions

### Is Odd Machines free?

Odd Machines is free to download, with in-app purchases available.

### Is PRISM free?

PRISM costs $1.99, with no in-app purchases.

### Do Odd Machines or PRISM have ads?

Neither Odd Machines nor PRISM shows ads.

### Which is updated more often, Odd Machines or PRISM?

Odd Machines ships an update every 2 months, and PRISM every 4 days. Most recently, Odd Machines was updated on November 4, 2026 and PRISM on November 10, 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.*