# SecondSkin vs isi

The clearest difference is update cadence: SecondSkin at every 3 weeks against isi's every 9 months. SecondSkin also leads on iOS requirement (8.0 vs 11.0). 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.

SecondSkin ships an update every 3 weeks, isi every 9 months. The most recent releases landed on September 19, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | SecondSkin | isi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Size | 32 MB | 28 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CMO Information Systems GmbH](https://appshunter.io/developer/955843694) | [it-werke](https://appshunter.io/developer/568837445) |

## What reviewers say

### SecondSkin

[App page](https://appshunter.io/ios/app/secondskin/id1189096944)

**Features:** macOS Compatibility

**In-app purchases:** none


### isi

[App page](https://appshunter.io/ios/app/isicado/id1491490340)

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

**In-app purchases:** none


## Frequently asked questions

### Is SecondSkin free?

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

### Is isi free?

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

### Do SecondSkin or isi have ads?

Neither SecondSkin nor isi shows ads.

### Which is updated more often, SecondSkin or isi?

SecondSkin ships an update every 3 weeks, and isi every 9 months. Most recently, SecondSkin was updated on September 19, 2026 and isi 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.*