# 321! vs Ouros

The clearest difference is price: 321! at Free against Ouros's $2.99. 321! also leads on update cadence (every 2 weeks vs every 5 months) and iOS requirement (9.0 vs 13.0). Ouros's advantage is rating (4.9 vs 4.2) and in-app purchases (none vs 2). On ratings volume, ads and device support there is nothing between them.

321! is free to download; Ouros costs $2.99 up front. 321! sells 2 one-off in-app purchases. Ouros asks for nothing beyond the download.

Ouros holds the better App Store score, 4.9 against 4.2. Both are backed by a comparable volume of ratings — 32 and 82 respectively. Written reviews point the same way: 66% of 321!'s written reviews are positive against 90% of Ouros's.

321! ships an update every 2 weeks, Ouros every 5 months. Both last shipped on October 20, 2026.

## The numbers

| Metric | 321! | Ouros |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [4.2 (32 ratings)](https://appshunter.io/ios/app/321-angles-do-matter/id827107898/reviews) | **[4.9 (82 ratings)](https://appshunter.io/ios/app/ouros/id6475737476/reviews)** |
| Number of ratings | 32 | **82** |
| Positive reviews | 66.0% of reviews | **90.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#199** |
| Size | 16 MB | 138 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Antonio Jr](https://appshunter.io/developer/827107901) | [Michael Kamm](https://appshunter.io/developer/1504129596) |

## What reviewers say

### 321!

[App page](https://appshunter.io/ios/app/321-angles-do-matter/id827107898)

A physics-based puzzle game that challenges your math and physics knowledge to find perfect angles for seemingly impossible passes. Compete against your own scores and share your achievements.

**Highlights:** Physics-based gameplay, Mathematical puzzles, Score-based challenges, Shareable results, Inspired by Flash game

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra shot | $0.99 | one-time |
| Upgrade to Pro | $4.99 | one-time |


### Ouros

[App page](https://appshunter.io/ios/app/ouros/id6475737476)

**Currently charting:** #199 Top Paid · Puzzle (US App Store)

A relaxing puzzle game where you manipulate curves to match targets in a serene environment. Discover the mathematical beauty of shapes with over 120 handcrafted levels. Enjoy a fluid, stress-free experience with intuitive controls and dynamic visuals.

**Highlights:** Original spline-based control scheme, Lush visuals and dynamic soundscapes, Flexible level progression and hint system, Intuitive multi-touch controls, Fluid gameplay without timers or scores

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

**In-app purchases:** none

**What reviewers like**

- 🎨 Gorgeous visuals and art direction
- 🎶 Beautiful music and sound design
- 🧠 Intellectually challenging and clever puzzles
- 🧘 Relaxing and calming gameplay experience
- 👍 Smooth introduction of new concepts and mechanics

**What reviewers complain about**

- ⏳ Too short for the price
- 📱 Landscape mode only (inconvenient for some)
- 🔊 Sound/SFX not working for some users
- ❓ Lack of clear instructions for some
- 🎛️ Constant 'bongs' can be distracting

**Reported bugs**

- Sound/SFX not working on iPhone
- Numbers are sideways in portrait mode
- Issue getting into corners with no running room on iPad

**Requested features**

- Add more levels
- Add Watch support
- Allow playing own music in the background
- Option to change orientation to portrait mode
- iCloud sync for progress across devices


## Frequently asked questions

### Is 321! free?

321! is free to download, with in-app purchases available.

### Is Ouros free?

Ouros costs $2.99, with no in-app purchases.

### Which has better reviews, 321! or Ouros?

Ouros is rated higher. 321! averages 4.2 out of 5 from 32 ratings, while Ouros averages 4.9 from 82 ratings.

### Do 321! or Ouros have ads?

Neither 321! nor Ouros shows ads.

### Which is updated more often, 321! or Ouros?

321! ships an update every 2 weeks, and Ouros every 5 months. Most recently, 321! was updated on October 20, 2026 and Ouros on October 20, 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.*