Vocalis Research vs sleep² sleeptracker & analysis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vocalis Research
Participate in health research by recording your voice and answering health-related questions. This app helps develop AI-powered tools for disease detection and management through vocal analysis.
- Voice sample recording
- Health symptom questionnaires
- AI-powered voice analysis
- Disease detection research
- Privacy protection measures
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Vocalis Health is researching how your voice changes as a reflection of changes in your health. We are conducting research to gather voice samples and health information to assist Vocalis Health and our research partners in developing software tools that will enable the detection and management of diseases by simply recording and analyzing your voice. To participate in this research initiative with Vocalis Health, you will be given instructions to speak into the phone via the VocalisResearch app and asked to record yourself counting, talking, reading and making specific sounds. You will also be asked to answer some questions about your symptoms and overall health. Vocalis Health has put in place several methods of protecting your privacy and the data you provided. We will not record any voices when you are not using the app. Vocalis Health, an healthtech company, has developed an artificial intelligence-based platform that uses voice to evaluate an individual’s health status. Vocalis Health has a platform of diverse vocal biomarkers designed to monitor and diagnose health based on a person’s voice, with the goal of providing a seamless, passive new way to monitor your health. Your participation in this research is critical to helping us apply this technology to help managing diseases worldwide.
sleep² sleeptracker & analysis
This app acts as a personal guide to better sleep, combining innovative sleep training with precise sleep tracking and analysis. It offers an EU-approved medical device program for acute sleep disorders like insomnia, providing personalized recommendations and sleep training based on your data.
- Sleep tracking and analysis
- Sleep training programs
- Personalized recommendations
- Interactive chatbot
- Data import (Polar sensor, Apple Health)
- Manual sleep diary entry
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Discover Sleep Anew: sleep² - Your Sleep Tracker sleep² is your personal guide to better sleep. It combines innovative sleep training with a precise sleep tracker. Sleep trackers provide valuable insights into your sleep. The sleep² Intensive Program is an EU-approved medical device, specifically designed for people with acute sleep disorders like insomnia. Our scientifically based method has already helped thousands improve their sleep quality through systematic and gradual sleep tracking and training. sleep² Pro: Based on sleep analysis, the program adapts to individual sleep data, delivering precise recommendations from your sleep tracker. Sleep Tracker: Analyze sleep using a Polar sensor or import data via Apple Health. Manually enter sleep data into the sleep diary if no tracker is used. Based on the sleep data, you get: Detailed recommendations based on sleep analysis Sleep training for better sleep An interactive chat-bot to help you sleep better Sleep analyses always available—no waiting like in sleep labs Precise sleep analysis through innovative algorithms for sleep improvement Free download & basic functions Full features of sleep² (precise sleep analysis, personalized programs) with subscription purchase Download sleep² - Our sleep tracker and precise sleep analysis help improve sleep! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: sleep² sleeptracker & analysis at 62% against Vocalis Research's 0%. sleep² sleeptracker & analysis also leads on rating (3.6 vs 1.0) and ratings volume (37 vs 2). Vocalis Research's advantage is in-app purchases (none vs 4) and update cadence (weekly vs every 2 weeks). On price, ads and device support 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. sleep² sleeptracker & analysis sells 4 in-app purchases, starting at $9.99 per month. Vocalis Research asks for nothing beyond the download.
sleep² sleeptracker & analysis holds the better App Store score, 3.6 against 1.0. That said, the two scores are not equally well evidenced: sleep² sleeptracker & analysis has 37 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Vocalis Research's written reviews are positive against 62% of sleep² sleeptracker & analysis's.
Vocalis Research ships an update weekly, sleep² sleeptracker & analysis every 2 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.
| Parameter | Vocalis Research | sleep² sleeptracker & analysis |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) | 3.6 (37 ratings) — better |
| Positive reviews | 0.0% of reviews | 61.7% of reviews — better |
| Number of ratings | 2 | 37 — better |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 51 MB | 110 MB |
| Age rating | 17+ | 4+ |
| Developer | Sheba Medical Center | Nukkuaa |
Customer experience
Vocalis Research
sleep² sleeptracker & analysis
In-app purchases
Vocalis Research
No in-app purchases
sleep² sleeptracker & analysis
- sleep² PRO$9.991 Month
- sleep² PRO$79.991 Year
- sleep² intensive program$39.99
- sleep² intensive program$99.99
Questions
Is Vocalis Research free?
Is sleep² sleeptracker & analysis free?
Which has better reviews, Vocalis Research or sleep² sleeptracker & analysis?
Do Vocalis Research or sleep² sleeptracker & analysis have ads?
Which is updated more often, Vocalis Research or sleep² sleeptracker & analysis?
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