# Topfly IoT vs O2

The clearest difference is update cadence: O2 at every 6 weeks against Topfly IoT's every 7 months. O2 also leads on iOS requirement (14.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Topfly IoT ships an update every 7 months, O2 every 6 weeks. The most recent releases landed on September 17, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Topfly IoT | O2 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Size | 148 MB | 10 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [i-Connecty srl](https://appshunter.io/developer/1250451465) | [EP spa](https://appshunter.io/developer/1688557966) |

## What reviewers say

### Topfly IoT

[App page](https://appshunter.io/ios/app/topfly-iot/id1547426115)

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

**In-app purchases:** none


### O2

[App page](https://appshunter.io/ios/app/o2/id6744065012)

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

**In-app purchases:** none


## Frequently asked questions

### Is Topfly IoT free?

Topfly IoT is free to download, with no in-app purchases.

### Is O2 free?

O2 is free to download, with no in-app purchases.

### Do Topfly IoT or O2 have ads?

Neither Topfly IoT nor O2 shows ads.

### Which is updated more often, Topfly IoT or O2?

Topfly IoT ships an update every 7 months, and O2 every 6 weeks. Most recently, Topfly IoT was updated on September 17, 2026 and O2 on October 6, 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.*