# BITS Lab vs GRBASZero

The clearest difference is review sentiment: BITS Lab at 67% against GRBASZero's 0%. BITS Lab also leads on iOS requirement (9.0 vs 13.0). GRBASZero's advantage is device support (3 vs 1). 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.

BITS Lab ships an update every 2 months, GRBASZero every 5 weeks. The most recent releases landed on September 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | BITS Lab | GRBASZero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (14 ratings)](https://appshunter.io/ios/app/bits-lab-start/id1198658004/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 66 MB | 30 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Tara McAllister](https://appshunter.io/developer/1198658003) | [ENTZERO, LIMITED LIABILITY CO.](https://appshunter.io/developer/1719962125) |

## 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


### GRBASZero

[App page](https://appshunter.io/ios/app/grbaszero/id1490666100)

This app analyzes voice data to estimate hoarseness based on the GRBAS scale. It utilizes a machine learning model built from data collected at a hospital's otolaryngology department. The app focuses on evaluating the long vowel sound "A".

**Highlights:** Voice data analysis, GRBAS scale estimation, Machine learning model, Hoarseness evaluation, Long vowel sound analysis

**In-app purchases:** none


## Frequently asked questions

### Is BITS Lab free?

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

### Is GRBASZero free?

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

### Do BITS Lab or GRBASZero have ads?

Neither BITS Lab nor GRBASZero shows ads.

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

BITS Lab ships an update every 2 months, and GRBASZero every 5 weeks. Most recently, BITS Lab was updated on September 25, 2026 and GRBASZero on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*