# Hooloovoo vs ColorGrail

The clearest difference is update cadence: ColorGrail at every 2 months against Hooloovoo's every 31 months. 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.

Hooloovoo ships an update every 31 months, ColorGrail every 2 months. The most recent releases landed on October 25, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Hooloovoo | ColorGrail |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hooloovoo/id903655999/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 1 MB | 430 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Pascal Harris](https://appshunter.io/developer/558268582) | [Color Grail Research](https://appshunter.io/developer/1263519959) |

## What reviewers say

### Hooloovoo

[App page](https://appshunter.io/ios/app/hooloovoo/id903655999)

This utility app converts colors between various formats like RGB, CMYK, and XYZ. It can identify the closest CSS or Crayola color, import custom palettes, and even capture colors using your device's camera. It's a comprehensive tool for all your color conversion needs.

**Highlights:** Multiple color format conversion (RGB, CMYK, XYZ, etc.), Find closest CSS/Crayola colors, Import custom color palettes, Capture colors with device camera, Supports iOS 7 and newer devices

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

**In-app purchases:** none


### ColorGrail

[App page](https://appshunter.io/ios/app/colorgrail/id1263519960)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Hooloovoo free?

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

### Is ColorGrail free?

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

### Do Hooloovoo or ColorGrail have ads?

Neither Hooloovoo nor ColorGrail shows ads.

### Which is updated more often, Hooloovoo or ColorGrail?

Hooloovoo ships an update every 31 months, and ColorGrail every 2 months. Most recently, Hooloovoo was updated on October 25, 2026 and ColorGrail on October 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.*