# RxMarbles vs Combine Tutorial

The clearest difference is in-app purchases: RxMarbles at none against Combine Tutorial's 1. RxMarbles also leads on ads (none vs shown) and update cadence (every 4 months vs every 34 months). On price there is nothing between them.

Both are free to download. Combine Tutorial sells 1 one-off in-app purchase. RxMarbles asks for nothing beyond the download.

RxMarbles ships an update every 4 months, Combine Tutorial every 34 months. The most recent releases landed on September 25, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | RxMarbles | Combine Tutorial |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (16 ratings)](https://appshunter.io/ios/app/rxmarbles/id1087272442/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 84.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 34 months |
| Monetization | Free | — |
| Size | 21 MB | 6 MB |
| Requires iOS | **9.2** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [AnjLab](https://appshunter.io/developer/501327862) | [红燕 马](https://appshunter.io/developer/1635360556) |

## What reviewers say

### RxMarbles

[App page](https://appshunter.io/ios/app/rxmarbles/id1087272442)

Visualize and understand ReactiveX observable sequences with interactive diagrams. This educational tool helps developers grasp complex asynchronous programming concepts by illustrating event-based data streams and composition operators.

**Highlights:** Interactive observable diagrams, Visualization of event streams, Demonstration of composition operators, Educational tool for asynchronous programming, Explains observer pattern extensions

**Features:** macOS Compatibility

**In-app purchases:** none


### Combine Tutorial

[App page](https://appshunter.io/ios/app/combine-tutorial/id6470148946)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| COMBINE TUTORIAL | $0.99 | one-time |


## Frequently asked questions

### Is RxMarbles free?

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

### Is Combine Tutorial free?

Combine Tutorial is free to download, with in-app purchases available.

### Do RxMarbles or Combine Tutorial have ads?

Combine Tutorial shows ads; RxMarbles does not.

### Which is updated more often, RxMarbles or Combine Tutorial?

RxMarbles ships an update every 4 months, and Combine Tutorial every 34 months. Most recently, RxMarbles was updated on September 25, 2026 and Combine Tutorial on September 11, 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.*