# VoicePrinter vs SLS Exercises

The clearest difference is price: VoicePrinter at Free against SLS Exercises's $4.99. SLS Exercises's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

VoicePrinter is free to download; SLS Exercises costs $4.99 up front. VoicePrinter sells 1 one-off in-app purchase. SLS Exercises asks for nothing beyond the download.

VoicePrinter ships an update every 47 months, SLS Exercises every 6 months. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | VoicePrinter | SLS Exercises |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/voiceprinter/id1180382943/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 47 months | **Every 6 months** |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 3 MB |
| Requires iOS | **15.0** | 16 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [HIROFUMI MARUO](https://appshunter.io/developer/667820705) | [Altug Basaran](https://appshunter.io/developer/1679429133) |

## 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 |


### SLS Exercises

[App page](https://appshunter.io/ios/app/sls-exercises/id6740192619)

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

**In-app purchases:** none


## Frequently asked questions

### Is VoicePrinter free?

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

### Is SLS Exercises free?

SLS Exercises costs $4.99, with no in-app purchases.

### Do VoicePrinter or SLS Exercises have ads?

VoicePrinter shows ads; SLS Exercises does not.

### Which is updated more often, VoicePrinter or SLS Exercises?

VoicePrinter ships an update every 47 months, and SLS Exercises every 6 months. Most recently, VoicePrinter was updated on October 10, 2026 and SLS Exercises on October 14, 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.*