# RxMarbles vs Resignal

The clearest difference is in-app purchases: RxMarbles at none against Resignal's 3. RxMarbles also leads on ratings volume (16 vs 2) and device support (3 vs 1). Resignal's advantage is update cadence (every 6 days vs every 4 months) and review sentiment (100% vs 84%). On price, rating and ads there is nothing between them.

Both are free to download. Resignal sells 3 in-app purchases, starting at $9.99 per 7 days. RxMarbles asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for RxMarbles against 5.0 for Resignal. That said, the two scores are not equally well evidenced: RxMarbles has 16 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 84% of RxMarbles's written reviews are positive against 100% of Resignal's.

RxMarbles ships an update every 4 months, Resignal every 6 days. Both last shipped on October 16, 2026.

## The numbers

| Metric | RxMarbles | Resignal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (16 ratings)](https://appshunter.io/ios/app/rxmarbles/id1087272442/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/resignal-mock-interview/id6780698444/reviews)** |
| Number of ratings | **16** | 2 |
| Positive reviews | 84.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 days** |
| Monetization | **Free** | Freemium |
| Size | 21 MB | 3 MB |
| Requires iOS | **9.2** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [AnjLab](https://appshunter.io/developer/501327862) | [kAI Labs LLC](https://appshunter.io/developer/6780698446) |

## 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


### Resignal

[App page](https://appshunter.io/ios/app/resignal-mock-interview/id6780698444)

Practice job interviews with AI-powered feedback. Record your answers, receive structured analysis including strengths, areas for improvement, and a hiring signal. Ask follow-up questions and review your interview history.

**Highlights:** On-device speech transcription, Structured AI feedback, Strengths and improvement areas, Hiring signal read, Follow-up questions, Interview history review

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $9.99 | per 7 days |
| Pro Monthly | $19.99 | per month |
| Pro Quarterly | $49.99 | per 3 months |


## Frequently asked questions

### Is RxMarbles free?

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

### Is Resignal free?

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

### Which has better reviews, RxMarbles or Resignal?

Resignal is rated higher. RxMarbles averages 4.9 out of 5 from 16 ratings, while Resignal averages 5.0 from 2 ratings.

### Do RxMarbles or Resignal have ads?

Neither RxMarbles nor Resignal shows ads.

### Which is updated more often, RxMarbles or Resignal?

RxMarbles ships an update every 4 months, and Resignal every 6 days. Most recently, RxMarbles was updated on October 16, 2026 and Resignal on October 16, 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.*