# Ring Stack vs Merge Number

The clearest difference is in-app purchases: Merge Number at none against Ring Stack's 1. Ring Stack's advantage is update cadence (every 5 weeks vs every 5 months) and ratings volume (17 vs 5). On price, rating, ads and device support there is nothing between them.

Both are free to download. Ring Stack sells 1 one-off in-app purchase. Merge Number 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 Merge Number. Both are backed by a comparable volume of ratings — 17 and 5 respectively.

Ring Stack ships an update every 5 weeks, Merge Number every 5 months. The most recent releases landed on September 18, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | Ring Stack | Merge Number |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (17 ratings)](https://appshunter.io/ios/app/ring-stack-color-sort/id1610379899/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/merge-number-stack-it-game/id1614185641/reviews)** |
| Number of ratings | **17** | 5 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 61 MB | 21 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sergei Shendrikov](https://appshunter.io/developer/1548534996) | [Bhavana Ponkiya](https://appshunter.io/developer/1548462328) |

## 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 |


### Merge Number

[App page](https://appshunter.io/ios/app/merge-number-stack-it-game/id1614185641)

This addictive number puzzle game challenges players to merge numbered rings by stacking them. With unlimited levels and classic gameplay, it's designed to enhance mental power and IQ. Enjoy a visually appealing experience with qualitative graphics and smooth animations.

**Highlights:** Number stacking and merging gameplay, Unlimited levels, Offline play, Qualitative graphics and sound, User-friendly controls, Suitable for all ages

**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 Merge Number free?

Merge Number is free to download, with no in-app purchases.

### Which has better reviews, Ring Stack or Merge Number?

Merge Number is rated higher. Ring Stack averages 4.9 out of 5 from 17 ratings, while Merge Number averages 5.0 from 5 ratings.

### Do Ring Stack or Merge Number have ads?

Both Ring Stack and Merge Number show ads.

### Which is updated more often, Ring Stack or Merge Number?

Ring Stack ships an update every 5 weeks, and Merge Number every 5 months. Most recently, Ring Stack was updated on September 18, 2026 and Merge Number on September 4, 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.*