# VoicePrinter vs RST Scope

The clearest difference is rating: RST Scope at 5.0 against VoicePrinter's 4.0. RST Scope also leads on in-app purchases (none vs 1) and update cadence (every 3 days vs every 47 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. VoicePrinter sells 1 one-off in-app purchase. RST Scope asks for nothing beyond the download.

RST Scope holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

VoicePrinter ships an update every 47 months, RST Scope every 3 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | VoicePrinter | RST Scope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/voiceprinter/id1180382943/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rst-scope/id1550582276/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 47 months | **Every 3 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 5 MB | 5 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HIROFUMI MARUO](https://appshunter.io/developer/667820705) | [koji kamogawa](https://appshunter.io/developer/1488210713) |

## What reviewers say

### VoicePrinter

[App page](https://appshunter.io/ios/app/voiceprinter/id1180382943)

Analyze sound and voice in real-time with detailed visual representations. Explore human voices, environmental sounds, music, and more. Offers recording, playback, and import/export features with a premium upgrade.

**Highlights:** Real-time sound visualization, Human voice analysis, Environmental sound analysis, Music analysis, Recording and playback, Import/export audio files

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Functions | $0.99 | one-time |


### 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


## Frequently asked questions

### Is VoicePrinter free?

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

### Is RST Scope free?

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

### Which has better reviews, VoicePrinter or RST Scope?

RST Scope is rated higher. VoicePrinter averages 4.0 out of 5 from 1 ratings, while RST Scope averages 5.0 from 1 ratings.

### Do VoicePrinter or RST Scope have ads?

Both VoicePrinter and RST Scope show ads.

### Which is updated more often, VoicePrinter or RST Scope?

VoicePrinter ships an update every 47 months, and RST Scope every 3 days. Most recently, VoicePrinter was updated on November 2, 2026 and RST Scope on November 3, 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.*