# PowerRGB vs Models Zoo

The clearest difference is rating: PowerRGB at 5.0 against Models Zoo's 3.0. PowerRGB also leads on device support (4 vs 2) and iOS requirement (14.3 vs 18.0). Models Zoo's advantage is update cadence (weekly vs every 6 weeks). On price, ratings volume, 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.

PowerRGB holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

PowerRGB ships an update every 6 weeks, Models Zoo weekly. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | PowerRGB | Models Zoo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/powerrgb/id1533543859/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/models-zoo/id6762083207/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 1 MB | 13 MB |
| Requires iOS | **14.3** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gryzle LLC](https://appshunter.io/developer/1533543861) | [Daisuke Majima](https://appshunter.io/developer/1350309854) |

## What reviewers say

### PowerRGB

[App page](https://appshunter.io/ios/app/powerrgb/id1533543859)

Easily create custom RGB colors and gradients directly on your iPhone. Adjust Red, Green, and Blue sliders to achieve limitless color possibilities.

**Highlights:** Create RGB colors, Red, Green, Blue sliders, Gradient creation, Multiple color gradients, iPhone native

**Features:** Vision Pro support

**In-app purchases:** none


### Models Zoo

[App page](https://appshunter.io/ios/app/models-zoo/id6762083207)

Explore and experiment with various AI models directly on your device. This app allows you to chat with language models, generate images, process audio and video, and inspect model performance without needing a server or account. It's designed for developers to easily integrate AI into their own applications.

**Highlights:** On-device AI model catalog, Chat with language and vision models, Image generation and manipulation, Audio processing and speech synthesis, Model inspection and benchmarking, Swift code export for integration, Privacy-focused local inference

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

**In-app purchases:** none


## Frequently asked questions

### Is PowerRGB free?

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

### Is Models Zoo free?

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

### Which has better reviews, PowerRGB or Models Zoo?

PowerRGB is rated higher. PowerRGB averages 5.0 out of 5 from 5 ratings, while Models Zoo averages 3.0 from 2 ratings.

### Do PowerRGB or Models Zoo have ads?

Neither PowerRGB nor Models Zoo shows ads.

### Which is updated more often, PowerRGB or Models Zoo?

PowerRGB ships an update every 6 weeks, and Models Zoo weekly. Most recently, PowerRGB was updated on November 3, 2026 and Models Zoo on November 9, 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.*