BITS Lab vs VOISS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BITS Lab
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.
- 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
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Many children, adolescents, and adults struggle to eliminate speech errors affecting the American English 'r' sound. Research suggests that these errors can in some cases be eliminated through biofeedback, where learners view a dynamic visual image of their speech and attempt to match a target representing correct production. staRt ("Speech Therapist's App for /r/ Treatment") aims to make biofeedback treatment for /r/ widely accessible to practicing speech-language pathologists. Features: - Tutorial explaining how to interpret and use the biofeedback display - "Free play" mode where users match their real-time visual-acoustic display to a target representing correct production of ‘r’ - "Quest" mode presenting syllables/words for 'r' practice; complexity increases or decreases in an adaptive fashion based on recent performance - "Quiz" mode for use in measuring baseline performance and tracking progress - Visual rewards reinforcing improvements in performance - Clinician dashboard tracking progress over the course of treatment
VOISS
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Welcome to VOISS, the revolutionary application for teaching essential social skills to youth, ages 8-10, using immersive virtual reality (VR) scenarios. Developed by VOISS, LLC, our platform is backed by years of research conducted by the University of Kansas, which has been ranked #1 among Special Education graduate programs for 27 years in a row. VOISS allows users to practice critical social skills in a safe environment while allowing educators to monitor progress and access resources that help students extend social skill learning into the real-world. VOISS provides users with a solution that combines cutting edge technology, journal-published research, and experiential education domain knowledge that will help progress and excel in life.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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. Both last shipped on October 11, 2026.
| Parameter | BITS Lab | VOISS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (14 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 66 MB | 3.2 GB |
| Age rating | 4+ | 4+ |
| Developer | Tara McAllister | VOISS, LLC |
In-app purchases
BITS Lab
No in-app purchases
VOISS
No in-app purchases
Questions
Is BITS Lab free?
Is VOISS free?
Do BITS Lab or VOISS have ads?
Which is updated more often, BITS Lab or VOISS?
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