# PSiO vs InnerSync Pro

The clearest difference is update cadence: InnerSync Pro at every 2 months against PSiO's every 11 months. PSiO's advantage is iOS requirement (9.0 vs 15.1). 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.

PSiO ships an update every 11 months, InnerSync Pro every 2 months. The most recent releases landed on September 16, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | PSiO | InnerSync Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Size | 25 MB | 62 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Psychomed.com SA](https://appshunter.io/developer/1318018249) | [AGS SRL](https://appshunter.io/developer/1794260555) |

## What reviewers say

### PSiO

[App page](https://appshunter.io/ios/app/psio/id1318018250)

**Features:** macOS Compatibility

**In-app purchases:** none


### InnerSync Pro

[App page](https://appshunter.io/ios/app/innersync-pro/id6741459681)

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

**In-app purchases:** none


## Frequently asked questions

### Is PSiO free?

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

### Is InnerSync Pro free?

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

### Do PSiO or InnerSync Pro have ads?

Neither PSiO nor InnerSync Pro shows ads.

### Which is updated more often, PSiO or InnerSync Pro?

PSiO ships an update every 11 months, and InnerSync Pro every 2 months. Most recently, PSiO was updated on September 16, 2026 and InnerSync Pro on September 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.*