# Color Hoop Stack vs Stopwatch Challenge

The clearest difference is in-app purchases: Stopwatch Challenge at none against Color Hoop Stack's 1. Stopwatch Challenge also leads on ads (none vs shown) and update cadence (daily vs every 4 months). Color Hoop Stack's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price there is nothing between them.

Both are free to download. Color Hoop Stack sells 1 one-off in-app purchase. Stopwatch Challenge asks for nothing beyond the download.

Color Hoop Stack ships an update every 4 months, Stopwatch Challenge daily. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Color Hoop Stack | Stopwatch Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (185 ratings)](https://appshunter.io/ios/app/color-hoop-stack-sort-ring/id1564553836/reviews)** | — |
| Number of ratings | **185** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 37 MB | 11 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mrudul Babariya](https://appshunter.io/developer/1436458898) | [Thibault Ducret](https://appshunter.io/developer/1842797901) |

## What reviewers say

### Color Hoop Stack

[App page](https://appshunter.io/ios/app/color-hoop-stack-sort-ring/id1564553836)

Engage your mind with a 3D color sorting puzzle. Arrange rings of the same color onto corresponding hoops to solve over 1700 challenging levels. Enjoy a relaxing, no-time-limit experience with stunning visuals and sound.

**Highlights:** 3D color hoop sorting, Over 1700 levels, Improve logical skills, Undo last move, New themes and backgrounds, No time limits, Realistic graphics and sound

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Stopwatch Challenge

[App page](https://appshunter.io/ios/app/stopwatch-challenge/id6811134669)

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

**In-app purchases:** none


## Frequently asked questions

### Is Color Hoop Stack free?

Color Hoop Stack is free to download, with in-app purchases available.

### Is Stopwatch Challenge free?

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

### Do Color Hoop Stack or Stopwatch Challenge have ads?

Color Hoop Stack shows ads; Stopwatch Challenge does not.

### Which is updated more often, Color Hoop Stack or Stopwatch Challenge?

Color Hoop Stack ships an update every 4 months, and Stopwatch Challenge daily. Most recently, Color Hoop Stack was updated on October 19, 2026 and Stopwatch Challenge 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.*