# THE I/O vs Gait Pro

The clearest difference is price: THE I/O at Free against Gait Pro's $4.99. THE I/O also leads on update cadence (every 4 months vs every 27 months) and iOS requirement (12.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

THE I/O is free to download; Gait Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

THE I/O ships an update every 4 months, Gait Pro every 27 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | THE I/O | Gait Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.9 (14 ratings)](https://appshunter.io/ios/app/the-io/id1576813737/reviews)** | — |
| Number of ratings | **14** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 27 months |
| Monetization | Free | — |
| Size | 195 MB | 1 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [The IO](https://appshunter.io/developer/1576813739) | [Kai Kunze](https://appshunter.io/developer/286544358) |

## What reviewers say

### THE I/O

[App page](https://appshunter.io/ios/app/the-io/id1576813737)

Book challenging and surprising group fitness classes. Manage your personal details and access contact information easily. Discover more features and expect the unexpected.

**Highlights:** Book group fitness classes, Manage personal details, Access contact information, Discover new features, Challenging workouts

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

**In-app purchases:** none


### Gait Pro

[App page](https://appshunter.io/ios/app/gait-pro/id6502754730)

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

**In-app purchases:** none


## Frequently asked questions

### Is THE I/O free?

THE I/O is free to download, with no in-app purchases.

### Is Gait Pro free?

Gait Pro costs $4.99, with no in-app purchases.

### Do THE I/O or Gait Pro have ads?

Neither THE I/O nor Gait Pro shows ads.

### Which is updated more often, THE I/O or Gait Pro?

THE I/O ships an update every 4 months, and Gait Pro every 27 months. Most recently, THE I/O was updated on November 3, 2026 and Gait Pro on November 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*