# iO vs Notebook Artillery

The clearest difference is price: iO at Free against Notebook Artillery's $0.99. iO also leads on ads (none vs shown). Notebook Artillery's advantage is rating (4.5 vs 3.7) and in-app purchases (none vs 1). On monetization model, device support and iOS requirement there is nothing between them.

iO is free to download; Notebook Artillery costs $0.99 up front. iO sells 1 one-off in-app purchase. Notebook Artillery asks for nothing beyond the download.

Notebook Artillery holds the better App Store score, 4.5 against 3.7. That said, the two scores are not equally well evidenced: Notebook Artillery has 148 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 71% of iO's written reviews are positive against 82% of Notebook Artillery's.

iO ships an update every 6 weeks, Notebook Artillery every 2 weeks. The most recent releases landed on June 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | iO | Notebook Artillery |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [3.7 (19 ratings)](https://appshunter.io/ios/app/io-a-physics-platformer/id960831187/reviews) | **[4.5 (148 ratings)](https://appshunter.io/ios/app/notebook-artillery/id6497486112/reviews)** |
| Number of ratings | 19 | **148** |
| Positive reviews | 71.1% of reviews | **81.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | **#91** |
| Size | 466 MB | 115 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gamious B.V.](https://appshunter.io/developer/539181337) | [Austin Ivansmith](https://appshunter.io/developer/806084714) |

## What reviewers say

### iO

[App page](https://appshunter.io/ios/app/io-a-physics-platformer/id960831187)

A physics-based platformer where you manipulate size, speed, and momentum to solve over 225 challenging mazes. Features unique gameplay mechanics like portals and inverted gravity, with global leaderboards for competitive play.

**Highlights:** Size, weight, and mass manipulation, Over 225 challenging mazes, Portals and inverted gravity, Global leaderboards, Unlockable achievements, Intuitive touch controls

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all advertisements | $0.99 | one-time |


### Notebook Artillery

[App page](https://appshunter.io/ios/app/notebook-artillery/id6497486112)

**Currently charting:** #91 Top Paid · Casual, #154 Top Paid · Action (US App Store)

Engage in strategic cannon combat with this arcade-simulation-action game. Adjust firing angle and powder to hit targets or opponents, accounting for wind and random stage layouts. Features hand-drawn art and multiple game modes.

**Highlights:** Adjust firing angle and powder, Account for wind and stage layouts, Solo target practice mode, CPU opponent, Local multiplayer vs mode, Hand-drawn game art, Unlockable stickers

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Engaging gameplay
- 👍 Charming hand-drawn visuals
- 🎨 Creative twist on artillery games
- 💡 Simple yet effective mechanics
- 🕹️ Satisfying challenge of mastering angles and power

**What reviewers complain about**

- 🔁 Repetitive gameplay
- 🤖 Erratic AI behavior
- 🕹️ Controls could be improved for one-handed play
- 🎨 Pixelated terrain graphics
- 🕹️ Lacking difficulty settings or progression

**Reported bugs**

- Crashes on iOS 12 and 13 on iPad Pro
- Inconsistent animation speeds

**Requested features**

- Online multiplayer
- Campaign mode with objectives
- Weapon/tower upgrades
- Customization options
- Special game modes (speed run, boss battles, etc.)


## Frequently asked questions

### Is iO free?

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

### Is Notebook Artillery free?

Notebook Artillery costs $0.99, with no in-app purchases.

### Which has better reviews, iO or Notebook Artillery?

Notebook Artillery is rated higher. iO averages 3.7 out of 5 from 19 ratings, while Notebook Artillery averages 4.5 from 148 ratings.

### Do iO or Notebook Artillery have ads?

Notebook Artillery shows ads; iO does not.

### Which is updated more often, iO or Notebook Artillery?

iO ships an update every 6 weeks, and Notebook Artillery every 2 weeks. Most recently, iO was updated on June 9, 2026 and Notebook Artillery on October 2, 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.*