# UD Color Checker vs Timer tick

The clearest difference is ads: Timer tick at none against UD Color Checker's shown. Timer tick also leads on update cadence (every 3 weeks vs every 2 months). UD Color Checker's advantage is iOS requirement (8.0 vs 16.0). On price, 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.

UD Color Checker ships an update every 2 months, Timer tick every 3 weeks. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | UD Color Checker | Timer tick |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 8 MB | 6 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Takuya Kawakami](https://appshunter.io/developer/721449462) | [Ali Boholaiqa](https://appshunter.io/developer/6790697866) |

## What reviewers say

### UD Color Checker

[App page](https://appshunter.io/ios/app/ud-color-checker/id721449459)

Simulate various types of color vision deficiency using your camera or photo library. Easily convert images to see how they appear to individuals with common color blindness conditions.

**Highlights:** Camera image simulation, Library image simulation, Trichromat simulation, Protanope simulation, Deuteranope simulation, Tritanope simulation, Save converted images

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

**In-app purchases:** none


### Timer tick

[App page](https://appshunter.io/ios/app/timer-tick/id6790697442)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is UD Color Checker free?

UD Color Checker is free to download, with no in-app purchases.

### Is Timer tick free?

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

### Do UD Color Checker or Timer tick have ads?

UD Color Checker shows ads; Timer tick does not.

### Which is updated more often, UD Color Checker or Timer tick?

UD Color Checker ships an update every 2 months, and Timer tick every 3 weeks. Most recently, UD Color Checker was updated on October 14, 2026 and Timer tick on October 15, 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.*