# iSIU vs OFA Advanced

The clearest difference is update cadence: iSIU at daily against OFA Advanced's every 6 weeks. OFA Advanced's advantage is iOS requirement (13.0 vs 15.0). 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.

iSIU ships an update daily, OFA Advanced every 6 weeks. The most recent releases landed on September 29, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | iSIU | OFA Advanced |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 6 weeks |
| Size | 61 MB | 57 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Green Grid Inc.](https://appshunter.io/developer/1715784766) | [Universal Electronics BV](https://appshunter.io/developer/681694493) |

## What reviewers say

### iSIU

[App page](https://appshunter.io/ios/app/isiu/id6471646259)

**Features:** macOS Compatibility

**In-app purchases:** none


### OFA Advanced

[App page](https://appshunter.io/ios/app/ofa-advanced/id6743192469)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iSIU free?

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

### Is OFA Advanced free?

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

### Do iSIU or OFA Advanced have ads?

Neither iSIU nor OFA Advanced shows ads.

### Which is updated more often, iSIU or OFA Advanced?

iSIU ships an update daily, and OFA Advanced every 6 weeks. Most recently, iSIU was updated on September 29, 2026 and OFA Advanced on October 12, 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.*