# Speak Unit vs StringLab

The clearest difference is price: Speak Unit at $0.99 against StringLab's $14.99. Speak Unit also leads on rating (4.8 vs 4.3) and review sentiment (67% vs 57%). StringLab's advantage is update cadence (every 10 days vs every 52 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Speak Unit costs $0.99 and StringLab $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Speak Unit holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 9 and 14 respectively. Written reviews point the same way: 67% of Speak Unit's written reviews are positive against 57% of StringLab's.

Speak Unit ships an update every 52 months, StringLab every 10 days. The most recent releases landed on October 4, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Speak Unit | StringLab |
| --- | --- | --- |
| Price | **$0.99** | $14.99 |
| Rating | **[4.8 (9 ratings)](https://appshunter.io/ios/app/speak-unit/id1261498777/reviews)** | [4.3 (14 ratings)](https://appshunter.io/ios/app/stringlab/id6461312318/reviews) |
| Number of ratings | 9 | **14** |
| Positive reviews | **66.7% of reviews** | 57.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 52 months | **Every 10 days** |
| Monetization | Paid | Paid |
| Size | 153 MB | 45 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rick Peacock](https://appshunter.io/developer/286052385) | [4Pockets.com](https://appshunter.io/developer/370131860) |

## What reviewers say

### Speak Unit

[App page](https://appshunter.io/ios/app/speak-unit/id1261498777)

This audio extension synthesizes speech for music production. Input up to twelve phrases, each triggered by a specific musical note, to add robotic vocals to your compositions. It's ideal for creating unique vocal effects in music software.

**Highlights:** Speech synthesis audio extension, Phrase input up to twelve entries, Note-triggered phrase playback, Voice selection, Standalone app for auditioning

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

**In-app purchases:** none


### StringLab

[App page](https://appshunter.io/ios/app/stringlab/id6461312318)

This app is a digital synthesizer that uses physical string modeling to recreate the sounds of various instruments, particularly plucked or hammered strings. It allows users to explore acoustic physics and create unique instrument textures through extensive parameter experimentation.

**Highlights:** Karplus-Strong physical modeling, Exciter Impact and Noise modes, Resonator objects with feedback, Frequency Dispersion support, External live input, Preset randomizer and manager, Drag & Drop preset export

**In-app purchases:** none


## Frequently asked questions

### Is Speak Unit free?

Speak Unit costs $0.99, with no in-app purchases.

### Is StringLab free?

StringLab costs $14.99, with no in-app purchases.

### Which has better reviews, Speak Unit or StringLab?

Speak Unit is rated higher. Speak Unit averages 4.8 out of 5 from 9 ratings, while StringLab averages 4.3 from 14 ratings.

### Do Speak Unit or StringLab have ads?

Neither Speak Unit nor StringLab shows ads.

### Which is updated more often, Speak Unit or StringLab?

Speak Unit ships an update every 52 months, and StringLab every 10 days. Most recently, Speak Unit was updated on October 4, 2026 and StringLab on October 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.*