# Colorimeter App vs Sentient Control

The clearest difference is in-app purchases: Sentient Control at none against Colorimeter App's 2. Sentient Control also leads on ads (none vs shown). Colorimeter App's advantage is update cadence (every 3 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Colorimeter App sells 2 in-app purchases, starting at $0.49 per month. Sentient Control asks for nothing beyond the download.

Colorimeter App ships an update every 3 weeks, Sentient Control every 2 months. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Colorimeter App | Sentient Control |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (137 ratings)](https://appshunter.io/ios/app/colorimeter-app/id1542365656/reviews)** | — |
| Number of ratings | **137** | — |
| Positive reviews | 64.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 37 MB | 18 MB |
| Requires iOS | **14.1** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Serhii Smyk](https://appshunter.io/developer/980088183) | [Opogy LLC](https://appshunter.io/developer/1538103339) |

## What reviewers say

### Colorimeter App

[App page](https://appshunter.io/ios/app/colorimeter-app/id1542365656)

Capture and analyze colors from your camera or photos. Get detailed information, convert between various color formats, and access extensive color lists. Includes tools for color mixing, difference calculation, and even color blindness tests.

**Highlights:** Pick color from camera, Pick color from photos, Color conversion, Color mixer, Color difference calculation, CSS and RAL color lists, Color blindness tests

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium for 1 month | $0.49 | per month |
| Premium for 1 year | $1.99 | per year |


### Sentient Control

[App page](https://appshunter.io/ios/app/sentient-control/id6760791900)

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

**In-app purchases:** none


## Frequently asked questions

### Is Colorimeter App free?

Colorimeter App is free to download, with in-app purchases available.

### Is Sentient Control free?

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

### Do Colorimeter App or Sentient Control have ads?

Colorimeter App shows ads; Sentient Control does not.

### Which is updated more often, Colorimeter App or Sentient Control?

Colorimeter App ships an update every 3 weeks, and Sentient Control every 2 months. Most recently, Colorimeter App was updated on October 12, 2026 and Sentient Control on October 10, 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.*