# Air Tree vs ZeroOneFlow

The clearest difference is in-app purchases: Air Tree at none against ZeroOneFlow's 1. Air Tree also leads on iOS requirement (13.0 vs 16.2). ZeroOneFlow's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 12 months). On price and device support there is nothing between them.

Both are free to download. ZeroOneFlow sells 1 one-off in-app purchase. Air Tree asks for nothing beyond the download.

Air Tree ships an update every 12 months, ZeroOneFlow every 3 weeks. The most recent releases landed on September 29, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Air Tree | ZeroOneFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Size | 138 MB | 1 MB |
| Requires iOS | **13.0** | 16.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tahito Aoki](https://appshunter.io/developer/289946976) | [Fu Ni](https://appshunter.io/developer/1560534229) |

## What reviewers say

### Air Tree

[App page](https://appshunter.io/ios/app/air-tree/id1326495528)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZeroOneFlow

[App page](https://appshunter.io/ios/app/zerooneflow/id1563516711)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tornado | $0.99 | one-time |


## Frequently asked questions

### Is Air Tree free?

Air Tree is free to download, with no in-app purchases.

### Is ZeroOneFlow free?

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

### Do Air Tree or ZeroOneFlow have ads?

Air Tree shows ads; ZeroOneFlow does not.

### Which is updated more often, Air Tree or ZeroOneFlow?

Air Tree ships an update every 12 months, and ZeroOneFlow every 3 weeks. Most recently, Air Tree was updated on September 29, 2026 and ZeroOneFlow on September 19, 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.*