# Ring Stack vs Rainbow Groupies

The clearest difference is in-app purchases: Rainbow Groupies at none against Ring Stack's 1. Rainbow Groupies also leads on ads (none vs shown) and update cadence (every 5 days vs every 5 weeks). Ring Stack's advantage is ratings volume (18 vs 3) and iOS requirement (12.0 vs 17.0). On price, rating and device support there is nothing between them.

Both are free to download. Ring Stack sells 1 one-off in-app purchase. Rainbow Groupies asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Ring Stack against 5.0 for Rainbow Groupies. That said, the two scores are not equally well evidenced: Ring Stack has 18 ratings behind it against 3, so its average is the more settled of the two.

Ring Stack ships an update every 5 weeks, Rainbow Groupies every 5 days. The most recent releases landed on October 22, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Ring Stack | Rainbow Groupies |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (18 ratings)](https://appshunter.io/ios/app/ring-stack-color-sort/id1610379899/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/rainbow-groupies/id6759208584/reviews)** |
| Number of ratings | **18** | 3 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 61 MB | 6 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sergei Shendrikov](https://appshunter.io/developer/1548534996) | [Neel Ketkar](https://appshunter.io/developer/1877422540) |

## What reviewers say

### Ring Stack

[App page](https://appshunter.io/ios/app/ring-stack-color-sort/id1610379899)

Engage in a classic and addictive puzzle experience. Arrange colorful hoops by sorting them onto the correct stacks. This game offers a simple yet challenging way to test your sorting skills.

**Highlights:** Classic addictive puzzle gameplay, Colorful hoop sorting, Simple and challenging mechanics, Intuitive interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Rainbow Groupies

[App page](https://appshunter.io/ios/app/rainbow-groupies/id6759208584)

A daily word puzzle game where players find connections between words to form four secret groups. It offers a fresh challenge each day with hints and educational benefits for the whole family.

**Highlights:** Daily word puzzles, Four secret word groups, On-device AI hints, Daily streak tracking, Vocabulary building, Multiple themes, iCloud sync

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

**In-app purchases:** none


## Frequently asked questions

### Is Ring Stack free?

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

### Is Rainbow Groupies free?

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

### Which has better reviews, Ring Stack or Rainbow Groupies?

Rainbow Groupies is rated higher. Ring Stack averages 4.9 out of 5 from 18 ratings, while Rainbow Groupies averages 5.0 from 3 ratings.

### Do Ring Stack or Rainbow Groupies have ads?

Ring Stack shows ads; Rainbow Groupies does not.

### Which is updated more often, Ring Stack or Rainbow Groupies?

Ring Stack ships an update every 5 weeks, and Rainbow Groupies every 5 days. Most recently, Ring Stack was updated on October 22, 2026 and Rainbow Groupies on October 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*