# RxMarbles

> Interactive diagrams for understanding ReactiveX observable sequences. (iPhone/iPad app by AnjLab.)

- Source: https://appshunter.io/ios/app/rxmarbles/id1087272442 (this page in markdown: same URL + `.md`)
- Developer: [AnjLab](https://appshunter.io/developer/501327862)
- Category: Education, Reference
- Price: Free
- Rating: 4.90/5 from 16 App Store ratings · 24 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.2 · 21 MB
- Languages: American English, Russian
- Released: 2016-03-01
- Data updated: 2026-08-14
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/rxmarbles/id1087272442/reviews.md

## What is RxMarbles?

Interactive diagrams of Rx Observables.

ReactiveX is a library for composing asynchronous and event-based programs by using observable sequences.

It extends the observer pattern to support sequences of data and/or events and adds operators that allow you to compose sequences together declaratively while abstracting away concerns about things like low-level threading, synchronization, thread-safety, concurrent data structures, and non-blocking I/O.

## Key features

- Interactive observable diagrams
- Visualization of event streams
- Demonstration of composition operators
- Educational tool for asynchronous programming
- Explains observer pattern extensions

## Recent user reviews (10 of 24)

All indexed reviews: https://appshunter.io/ios/app/rxmarbles/id1087272442/reviews.md

### 5/5 — Спасибо

*2021-08-20*

👍👍👍

### 5/5 — Geniale

*2020-07-03*

Per chi si vuole avvicinare all’approccio Rx. Stupenda!

### 5/5 — 😎

*2020-02-06*

Отлично работает и на русском языке!

### 5/5 — Well done

*2019-09-12*

Very helpful app

### 5/5 — Awesome

*2019-08-26*

To learn RX this app is great help.

### 5/5 — Неполная локализация

*2019-04-22*

Оператор scan не переведён.

### 5/5 — красивое приложение

*2019-02-25*

хороший дизайн, красивая анимация, полезный функционал

### 5/5 — Nice app

*2018-12-13*

I learned a lot from it. Thanks for the open source.

### 5/5 — Wish this was official

*2018-09-13*

So good... If only there was an official app from Microsoft.

### 5/5 — Excellent

*2018-03-24*

This is a really cool app!
With great examples and links to the original documentation.
Thank you very much for your great work!

## Frequently asked questions about RxMarbles

### What is RxMarbles used for?

RxMarbles provides interactive diagrams to help users visualize and understand ReactiveX observable sequences. It's designed to make learning asynchronous programming concepts more intuitive.

### Is RxMarbles free to use?

Yes, RxMarbles is completely free to download and use. There are no in-app purchases or advertisements.

### What devices does RxMarbles support?

RxMarbles is available for iPhone, iPad, and iPod. It is designed for the iOS ecosystem.

### How often is RxMarbles updated?

The latest version, 1.2.5, was released on January 9, 2020. While updates may not be frequent, the core functionality remains stable for learning ReactiveX.

### What is the age rating for RxMarbles?

RxMarbles has an age rating of 4+, making it suitable for a wide range of users interested in learning programming concepts.

### Can RxMarbles be used offline?

The provided information does not specify offline capabilities. However, as an educational tool for diagrams, it is likely designed to function without a constant internet connection.

### What makes RxMarbles a good learning tool for ReactiveX?

RxMarbles excels at visually representing complex observable sequences and operator compositions, which are core to ReactiveX. This visual approach aids comprehension for learners.

## Version history (last 5 releases)

### 1.2.5 — 2020-01-09

Fixed throttle operator. (Thanks @matthewyan)

Many thanks to @asafbaibekov for contributions.

### 1.2.4 — 2019-04-19

Add Russian localization.

Many thanks to @gre4ixin

### 1.2.3 — 2019-02-22

This is maintenance release.

- Updated to latest Swift (get ready for v5)
- Updated dependencies (RxSwift, RxCocoa, Crashlytics, Device)

Huge thanks to @Vkt0r

### 1.2.2 — 2018-01-15

Fix for marbles sharing (thanks to @pchelnikov)

### 1.2.1 — 2017-12-31

Swift 4.0.2 and RxSwift 4.0.0, iPhone X support and fixes.

Many thanks to: 
- Victor Sigler (@Vkt0r)
- Laura Artiles (@lauraartiles)
- Shai Mishali (@freak4pc)
- Michael Pchelnikov (@pchelnikov)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-14.*