# CENTRAC vs Ucar Collections

The clearest difference is update cadence: Ucar Collections at monthly against CENTRAC's every 12 months. CENTRAC's advantage is iOS requirement (12.0 vs 14.0). 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.

CENTRAC ships an update every 12 months, Ucar Collections monthly. Both last shipped on September 14, 2026.

## The numbers

| Metric | CENTRAC | Ucar Collections |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Monthly** |
| Size | 14 MB | 29 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Multibat Nederland B.V.](https://appshunter.io/developer/1753962156) | [UCAR B.V.](https://appshunter.io/developer/1775425860) |

## What reviewers say

### CENTRAC

[App page](https://appshunter.io/ios/app/centrac/id6504823004)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ucar Collections

[App page](https://appshunter.io/ios/app/ucar-collections/id6737233458)

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

**In-app purchases:** none


## Frequently asked questions

### Is CENTRAC free?

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

### Is Ucar Collections free?

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

### Do CENTRAC or Ucar Collections have ads?

Neither CENTRAC nor Ucar Collections shows ads.

### Which is updated more often, CENTRAC or Ucar Collections?

CENTRAC ships an update every 12 months, and Ucar Collections monthly. Most recently, CENTRAC was updated on September 14, 2026 and Ucar Collections on September 14, 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.*