# One More Line vs O

The clearest difference is ads: One More Line at none against O's shown. One More Line also leads on chart position (#184 vs unranked) and ratings volume (891 vs 191). O's advantage is review sentiment (72% vs 45%) and update cadence (weekly vs every 3 weeks). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. One More Line sells 1 one-off in-app purchase and O sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.5 for One More Line against 4.6 for O. Both are backed by a comparable volume of ratings — 891 and 191 respectively. Written reviews are what separate them: 45% of One More Line's written reviews are positive against 72% of O's.

One More Line ships an update every 3 weeks, O weekly. Both last shipped on October 17, 2026.

## The numbers

| Metric | One More Line | O |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (891 ratings)](https://appshunter.io/ios/app/one-more-line/id914433115/reviews) | **[4.6 (191 ratings)](https://appshunter.io/ios/app/o-void/id6449623550/reviews)** |
| Number of ratings | **891** | 191 |
| Positive reviews | 45.3% of reviews | **72.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#184** | — |
| Size | 123 MB | 43 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SMG Studio](https://appshunter.io/developer/832131501) | [Gearhead Games ApS](https://appshunter.io/developer/1163605497) |

## What reviewers say

### One More Line

[App page](https://appshunter.io/ios/app/one-more-line/id914433115)

**Currently charting:** #184 Top Grossing · Music (US App Store)

A highly addictive, one-button arcade game where players control a spaceship through a psychedelic disco-themed space. Master precise timing to navigate obstacles and achieve high scores in this challenging skill-based experience.

**Highlights:** One-button control, Skill-based timing gameplay, Addictive arcade experience, Psychedelic space disco theme, High score challenges, Easy to learn, hard to master

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 🚀 Simple but engrossing
- 👍 Great game
- 👍 Addictive
- 👍 Fun and addictive
- 👍 Awesome!

**What reviewers complain about**

- 🐛 Laggy
- 🐛 Glitchy
- 🐛 Outdated
- 🐛 Crashes
- 🐛 Grappling issues

**Reported bugs**

- Grappling issues
- Crashes on launch
- Achievements/leaderboards not working
- Compatibility issues with newer devices
- Ads causing crashes/freezes

**Requested features**

- Unlock achievements
- Leaderboards
- Customization options
- Difficulty modes
- Themes


### O

[App page](https://appshunter.io/ios/app/o-void/id6449623550)

Navigate a spinning circle through challenging obstacles in this minimal action runner. Levels dynamically change direction and flip, testing your reflexes. Compete globally and unlock customizations.

**Highlights:** One-tap gameplay, Mind-bending geometry, Randomly generated levels, Chiptune soundtrack, Unlockable customizations, Global leaderboards

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |

**What reviewers like**

- 🎶 Great music/soundtrack
- 🎮 Challenging and satisfying gameplay
- 💡 Innovative game mechanics
- 💯 High skill ceiling/mastery
- ✨ Simple yet addictive

**What reviewers complain about**

- 😵 Dizzying/makes users sick
- 🥵 Extremely difficult/too hard
- ⏳ Too short/lacks content
- 😵‍💫 Trippy and weird visuals
- 🤢 Makes users feel sick

**Reported bugs**

- Spinning makes users sick
- Obstacles in later levels require luck/insane reaction time
- Effect does not disappear properly in penultimate level
- Game is glitchy, laggy, and unresponsive
- Revive ad doesn't work/can't close ad

**Requested features**

- Add more levels
- New dimension/different gameplay principle
- User level creator
- More beats/music synchronization
- Option to turn down color brightness


## Frequently asked questions

### Is One More Line free?

One More Line is free to download, with in-app purchases available.

### Is O free?

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

### Which has better reviews, One More Line or O?

O is rated higher. One More Line averages 4.5 out of 5 from 891 ratings, while O averages 4.6 from 191 ratings.

### Do One More Line or O have ads?

O shows ads; One More Line does not.

### Which is updated more often, One More Line or O?

One More Line ships an update every 3 weeks, and O weekly. Most recently, One More Line was updated on October 17, 2026 and O on October 17, 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.*