# BITS Lab vs VOISS

The clearest difference is device support: VOISS at 3 against BITS Lab's 1. BITS Lab's advantage is iOS requirement (9.0 vs 15.0). On price, update cadence, ads 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | BITS Lab | VOISS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (16 ratings)](https://appshunter.io/ios/app/bits-lab-start/id1198658004/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 66 MB | 3.2 GB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tara McAllister](https://appshunter.io/developer/1198658003) | [VOISS, LLC](https://appshunter.io/developer/1820519088) |

## What reviewers say

### BITS Lab

[App page](https://appshunter.io/ios/app/bits-lab-start/id1198658004)

This app uses visual biofeedback to help users, particularly children and adolescents, correct speech errors related to the American English 'r' sound. It offers guided practice, adaptive challenges, and progress tracking for effective speech therapy.

**Highlights:** Visual biofeedback for speech correction, Tutorial for biofeedback interpretation, Free play mode for 'r' practice, Adaptive quest mode for increasing difficulty, Quiz mode for progress tracking, Visual rewards for improvement, Clinician dashboard for progress monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### VOISS

[App page](https://appshunter.io/ios/app/voiss/id1627278569)

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

**In-app purchases:** none


## Frequently asked questions

### Is BITS Lab free?

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

### Is VOISS free?

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

### Do BITS Lab or VOISS have ads?

Neither BITS Lab nor VOISS shows ads.

### Which is updated more often, BITS Lab or VOISS?

BITS Lab ships an update every 2 months, and VOISS every 2 months. Most recently, BITS Lab was updated on October 24, 2026 and VOISS on October 11, 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.*