SimpleHR vs Quadrascan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SimpleHR
Displays your current heart rate in large, easy-to-read text on your Apple Watch. Integrates with Apple HealthKit to provide real-time heart rate data, ideal for activities like running or cycling. Customize target zones and activity settings via the companion iPhone app.
- Large heart rate display
- Apple HealthKit integration
- Customizable heart rate zones
- Activity and location settings
- Companion iPhone app
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Just your heart rate on your Apple watch in the largest text that will fit! When you are running or cycling and you want to see your heart rate, tiny text just will not do. That's why we built Simple Heart Rate to provide easy-to-read access to your current heart rate by integrating with Apple HealthKit. You use the iPhone app to create multiple heart rate target zones with optional settings for activity and location to enhance your training experience. Simple Heart Rate makes a great companion app to a workout tracker running on your iPhone.
Quadrascan
This app creates detailed 3D body models from just four smartphone photos, offering precise measurements and performance insights for athletes. It supports longitudinal tracking to optimize development and ensures data privacy with GDPR and HIPAA compliance.
- 3D body model creation from photos
- Accurate anthropometric measurements
- Body composition and asymmetry analysis
- Athlete performance optimization
- Longitudinal tracking for development
- Secure cloud processing
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QuadraScan turns four smartphone photos into an industry-grade, fully articulated 3D body model. No bulky hardware. No radiation. Accurate Anthropometrics Circumference, breadth, volume, and more, captured in minutes. Performance Insights Body composition, muscle-to-bone ratios, asymmetry detection, growth maturation, and peak height velocity (PHV) modeling, delivered through longitudinal tracking to optimize athlete development. Seamless Workflow In-app photo capture or import, with instant 3D preview. Secure & Private GDPR and HIPAA compliant cloud processing. CONNECT WITH US Questions, comments, or feedback? Email info@fitmatch.ai. Follow us on Instagram @fitmatch.ai
Screenshots
Verdict
The clearest difference is review sentiment: Quadrascan at 92% against SimpleHR's 43%. Quadrascan also leads on price (Free vs $0.99) and rating (4.9 vs 3.8). On ratings volume, ads, in-app purchases 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
Quadrascan is free to download; SimpleHR costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Quadrascan holds the better App Store score, 4.9 against 3.8. Both are backed by a comparable volume of ratings — 14 and 20 respectively. Written reviews point the same way: 43% of SimpleHR's written reviews are positive against 92% of Quadrascan's.
SimpleHR ships an update every 4 months, Quadrascan every 3 weeks. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.
| Parameter | SimpleHR | Quadrascan |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.8 (14 ratings) | 4.9 (20 ratings) — better |
| Positive reviews | 42.9% of reviews | 92.3% of reviews — better |
| Number of ratings | 14 | 20 — better |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 1 MB | 15 MB |
| Age rating | 4+ | 12+ |
| Developer | Aaron Sullivan | FIT:MATCH |
Customer experience
SimpleHR
Quadrascan
In-app purchases
SimpleHR
No in-app purchases
Quadrascan
No in-app purchases
