# RGB Colour Tool vs Countdown Calendar

The clearest difference is in-app purchases: RGB Colour Tool at none against Countdown Calendar's 2. RGB Colour Tool also leads on iOS requirement (13 vs 18.0). Countdown Calendar's advantage is update cadence (weekly vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Countdown Calendar sells 2 in-app purchases, starting at $3.99 per month. RGB Colour Tool asks for nothing beyond the download.

RGB Colour Tool ships an update every 7 months, Countdown Calendar weekly. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | RGB Colour Tool | Countdown Calendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Size | 20 MB | 37 MB |
| Requires iOS | **13** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [SAMUEL R HARVEY](https://appshunter.io/developer/1737755904) | [Serhii Surzhykov](https://appshunter.io/developer/1883337368) |

## What reviewers say

### RGB Colour Tool

[App page](https://appshunter.io/ios/app/rgb-colour-tool/id6742676407)

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

**In-app purchases:** none


### Countdown Calendar

[App page](https://appshunter.io/ios/app/countdown-calendar-timefeel/id6760222007)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $3.99 | per month |
| Plus Lifetime | $11.99 | one-time |


## Frequently asked questions

### Is RGB Colour Tool free?

RGB Colour Tool is free to download, with no in-app purchases.

### Is Countdown Calendar free?

Countdown Calendar is free to download, with in-app purchases available.

### Do RGB Colour Tool or Countdown Calendar have ads?

Neither RGB Colour Tool nor Countdown Calendar shows ads.

### Which is updated more often, RGB Colour Tool or Countdown Calendar?

RGB Colour Tool ships an update every 7 months, and Countdown Calendar weekly. Most recently, RGB Colour Tool was updated on October 7, 2026 and Countdown Calendar on October 24, 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.*