# OptiLibrary vs FREZZ

The clearest difference is update cadence: OptiLibrary at monthly against FREZZ's every 3 months. OptiLibrary also leads on iOS requirement (11.0 vs 13.0). 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.

OptiLibrary ships an update monthly, FREZZ every 3 months. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | OptiLibrary | FREZZ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Size | 227 MB | 74 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Ouzhiou Trading Co., Ltd.](https://appshunter.io/developer/1704953492) | [PACIFIC TRADE (app)](https://appshunter.io/developer/6776996634) |

## What reviewers say

### OptiLibrary

[App page](https://appshunter.io/ios/app/optilibrary/id6463772966)

**Features:** macOS Compatibility

**In-app purchases:** none


### FREZZ

[App page](https://appshunter.io/ios/app/frezz/id6776996632)

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

**In-app purchases:** none


## Frequently asked questions

### Is OptiLibrary free?

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

### Is FREZZ free?

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

### Do OptiLibrary or FREZZ have ads?

Neither OptiLibrary nor FREZZ shows ads.

### Which is updated more often, OptiLibrary or FREZZ?

OptiLibrary ships an update monthly, and FREZZ every 3 months. Most recently, OptiLibrary was updated on September 9, 2026 and FREZZ on September 19, 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.*