# RxMarbles vs ScamShield AI

The clearest difference is in-app purchases: RxMarbles at none against ScamShield AI's 2. RxMarbles also leads on iOS requirement (9.2 vs 26.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ScamShield AI sells 2 in-app purchases, starting at $2.99 per month. RxMarbles asks for nothing beyond the download.

RxMarbles ships an update every 4 months, ScamShield AI every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | RxMarbles | ScamShield AI |
| --- | --- | --- |
| 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 | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 21 MB | 10 MB |
| Requires iOS | **9.2** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AnjLab](https://appshunter.io/developer/501327862) | [Siew Yin Tan](https://appshunter.io/developer/1463277223) |

## 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


### ScamShield AI

[App page](https://appshunter.io/ios/app/scamshield-ai-scam-detector/id6770247571)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ScamShield AI Pro Monthly | $2.99 | per month |
| ScamShield AI Pro Yearly | $19.99 | per year |


## Frequently asked questions

### Is RxMarbles free?

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

### Is ScamShield AI free?

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

### Do RxMarbles or ScamShield AI have ads?

Neither RxMarbles nor ScamShield AI shows ads.

### Which is updated more often, RxMarbles or ScamShield AI?

RxMarbles ships an update every 4 months, and ScamShield AI every 2 months. Most recently, RxMarbles was updated on October 24, 2026 and ScamShield AI on October 24, 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.*