Fitiv + Scosche Rhythm+
The Scosche Rhythm+ is a popular optical armband heart rate monitor that straps to your forearm or upper arm — useful for situations where a chest strap is uncomfortable (HIIT, rowing, swimming) or when you want to free your wrist from a watch.
Fitiv Pulse connects to the Scosche Rhythm+ via Bluetooth LE, displaying real-time heart rate and heart rate zones during workouts.
Connecting Scosche Rhythm+ to Fitiv
- Charge the Rhythm+ fully before first use
- Strap it to your forearm (2 inches below the elbow works well)
- Power on the Rhythm+ (hold the button until the LED flashes)
- In Fitiv, go to Settings → Sensors → Add Bluetooth Device
- Select "Scosche Rhythm+" from the discovered devices
- Confirm the pairing
Scosche Rhythm+ vs Other HR Monitors
| Feature | Scosche Rhythm+ | Polar H10 | Apple Watch | |---|---|---|---| | Sensor type | Optical (arm) | ECG (chest) | Optical (wrist) | | HRV accuracy | Moderate | Excellent | Good at rest | | Comfort during exercise | High | Moderate | High | | Battery life | 8 hours | 400 hours | 18 hours | | Bluetooth LE | Yes | Yes | Yes | | Price | ~$80 | ~$90 | Varies |
For pure heart rate monitoring during workouts, the Rhythm+ is a comfortable and accurate choice. For HRV-based training readiness, the Polar H10 is recommended.
Frequently Asked Questions
Q: Does the Scosche Rhythm+ work for HRV measurement? A: The Rhythm+ provides Bluetooth LE heart rate data. Fitiv uses this to calculate approximate HRV. For precise HRV (RMSSD for readiness scoring), the Polar H10 ECG chest strap is more accurate.
Q: Which arm position is best for the Scosche Rhythm+? A: The forearm (2 inches below elbow) or upper arm work well. Avoid placing it over the wrist bone. Ensure it's snug — optical sensors need skin contact.