# 3DHanoiTower vs Ring Stack

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

Both are free to download. Ring Stack sells 1 one-off in-app purchase. 3DHanoiTower asks for nothing beyond the download.

3DHanoiTower ships an update every 18 months, Ring Stack every 5 weeks. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 3DHanoiTower | Ring Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (17 ratings)](https://appshunter.io/ios/app/ring-stack-color-sort/id1610379899/reviews)** |
| Number of ratings | — | **17** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 18 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 61 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yonggao Yang](https://appshunter.io/developer/775517831) | [Sergei Shendrikov](https://appshunter.io/developer/1548534996) |

## What reviewers say

### 3DHanoiTower

[App page](https://appshunter.io/ios/app/3dhanoitower/id1509104554)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 3DHanoiTower free?

3DHanoiTower is free to download, with no in-app purchases.

### Is Ring Stack free?

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

### Do 3DHanoiTower or Ring Stack have ads?

Ring Stack shows ads; 3DHanoiTower does not.

### Which is updated more often, 3DHanoiTower or Ring Stack?

3DHanoiTower ships an update every 18 months, and Ring Stack every 5 weeks. Most recently, 3DHanoiTower was updated on October 3, 2026 and Ring Stack on October 5, 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.*