# RST Scope vs Contacts Shuffle

The clearest difference is ads: Contacts Shuffle at none against RST Scope's shown. Contacts Shuffle also leads on monetization model (free vs ad-supported). RST Scope's advantage is update cadence (every 3 days vs fortnightly). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for RST Scope against 5.0 for Contacts Shuffle. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

RST Scope ships an update every 3 days, Contacts Shuffle fortnightly. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | RST Scope | Contacts Shuffle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/rst-scope/id1550582276/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/contacts-shuffle/id6447102510/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | Ad-supported | **Free** |
| Size | 5 MB | 1 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Wayland Chin](https://appshunter.io/developer/1680338827) |

## What reviewers say

### RST Scope

[App page](https://appshunter.io/ios/app/rst-scope/id1550582276)

This utility app provides spectrum scope and waterfall displays for amateur radio operators. It enhances radios lacking these features by analyzing microphone input, allowing for clear distinction of Morse code and detailed audio frequency visualization.

**Highlights:** Spectrum scope and waterfall display, Morse code distinction via FFT, Adjustable waterfall speed, Adjustable audio input level, Switchable display band (wide/narrow), Display pause function, Recording and playback of input sound

**In-app purchases:** none


### Contacts Shuffle

[App page](https://appshunter.io/ios/app/contacts-shuffle/id6447102510)

This utility app helps you manage your extensive contact list by randomly selecting an entry. You can then choose to delete, modify, or directly contact the selected person.

**Highlights:** Random contact selection, Contact deletion, Contact modification, Direct contact initiation, Works with existing address book

**In-app purchases:** none


## Frequently asked questions

### Is RST Scope free?

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

### Is Contacts Shuffle free?

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

### Which has better reviews, RST Scope or Contacts Shuffle?

RST Scope and Contacts Shuffle are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do RST Scope or Contacts Shuffle have ads?

RST Scope shows ads; Contacts Shuffle does not.

### Which is updated more often, RST Scope or Contacts Shuffle?

RST Scope ships an update every 3 days, and Contacts Shuffle fortnightly. Most recently, RST Scope was updated on October 13, 2026 and Contacts Shuffle on October 10, 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.*