MultiHR vs AerTennis

Compare heart-rate sensors and record their changes together. MultiHR connects compatible Bluetooth Low Energy heart-rate devices, shows live readings and curves, and records multiple sources on the same timeline. Use it to compare sensors you wear or to view multiple people's heart rates during training. LIVE READINGS AND CHARTS See current heart rate and device connection status. Overlay multiple curves to compare how sources respond, or open a device's details for a closer look. APPLE WATCH, FROM YOUR WRIST TO YOUR MAC Use MultiHR on your paired Apple Watch to measure heart rate and send it to iPhone. With the new Apple Watch relay, your iPhone can also forward those readings to MultiHR on Mac, alongside the Mac's Bluetooth heart-rate sources. Discover your Mac automatically, compare the six-digit code on both devices, and confirm the first pairing. Saved trust supports automatic reconnection without copying a pairing link. This update improves forwarding when iPhone is locked or in the background. Delivery depends on the active Watch session, networking and iOS background availability. The Mac receives heart rate and does not broadcast it. On iPhone, optional Bluetooth heart-rate broadcasting is a separate feature that you choose to enable for compatible receivers. RECORD, ANALYZE, EXPORT Save sessions to History and review their curves. Compare paired recordings with correlation and Bland-Altman analysis. Export a ZIP package with an Excel workbook and detailed CSV files, including original samples and heart-rate data aligned by time. Reopen recordings for later review. RR and HRV data are available only when supplied by a compatible sensor. Apple Watch heart-rate relay does not supply RR intervals. FREE AND PRO Try recordings of up to one minute per session. MultiHR Pro removes the recording-time limit. Choose a monthly or yearly subscription, or a one-time lifetime purchase. Current prices are shown in the app for your region. Monthly and yearly subscriptions renew automatically unless canceled in your App Store account settings. Eligible customers who previously purchased the paid iOS app can restore their existing Pro access. For fitness monitoring and device comparison. MultiHR is not intended for medical diagnosis. Privacy Policy: https://multihr.app/en/privacy-policy Terms of Use: https://multihr.app/en/terms Apple Standard EULA: https://multihr.app/en/terms

AerTennis is a fun motion-sensing tennis app for enthusiasts. No rackets, courts or nets needed. It uses your iPhone’s sensors to track swings, so you can practice tennis anytime and anywhere. Compatible with iOS 17.0+ and iPhones equipped with gyroscope & accelerometer. No ads. One-time purchase, lifetime use & free updates.** Features - **Accurate Motion Detection** Reliably recognizes forehand, backhand and serve with anti-shake technology. - **Swing Speed Measurement** Calculates speed from 50 to 210 km/h with dual algorithms. - **Immersive Feedback** Real-time vibration, sound effects and visual animations for authentic experience. - **7-Day Activity Tracking** View hitting counts and top speed via visual trend charts. - **User-friendly Design** Simple interface, easy to operate for all users. Highlights Accurately identifies all standard tennis swings Wide speed range for beginners to skilled players Visual data records to track your progress Ad-free environment, full access forever Share ideas and tennis tips with our community: austinc@juzicy.com Follow us for latest updates and tips.