# iPhO vs SKI+ v2

The clearest difference is iOS requirement: iPhO at 14.0 against SKI+ v2's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

iPhO ships an update every 2 weeks, SKI+ v2 fortnightly. The most recent releases landed on August 20, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | iPhO | SKI+ v2 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Fortnightly** |
| Size | 20 MB | 249 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KeyStone Semiconductor Corp.](https://appshunter.io/developer/369310088) | [Academia Sinica Research Center for Information Technology Innovation](https://appshunter.io/developer/432286895) |

## What reviewers say

### iPhO

[App page](https://appshunter.io/ios/app/ipho/id1582577469)

**Features:** Vision Pro support

**In-app purchases:** none


### SKI+ v2

[App page](https://appshunter.io/ios/app/ski-plus-v2/id6468494003)

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

**In-app purchases:** none


## Frequently asked questions

### Is iPhO free?

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

### Is SKI+ v2 free?

SKI+ v2 is free to download, with no in-app purchases.

### Do iPhO or SKI+ v2 have ads?

Neither iPhO nor SKI+ v2 shows ads.

### Which is updated more often, iPhO or SKI+ v2?

iPhO ships an update every 2 weeks, and SKI+ v2 fortnightly. Most recently, iPhO was updated on August 20, 2026 and SKI+ v2 on September 10, 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.*