Banister TRIMP (1980) + Tanaka HR-max (208-0.7×age) + HRV ratio readiness. Calibrated to match WHOOP's color zones but the absolute numbers will differ from WHOOP's proprietary algorithm.
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Strain today · TRIMP→0-21
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Readiness · HRV ratio
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HR max estimated
Tanaka: 208 − 0.7×age
HR zones today (% of total time with HR > 0)—
Readiness · HRV-based proxy
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/ 100
no data
RMSSD — ms
samples 0
WHOOP keeps its real formula proprietary (cloud-only) but their UI thresholds (from APK strings) are > 66 recovered · 34–66 moderate · < 34 run down. We approximate via live RMSSD ∈ 10–80 ms → 0–100.
Live heart rate · last 60s
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bpm
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60s max
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60s min
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60s avg
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skin temp byte
Smart wake alarm
⏰
alarm off
configure below
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Battery
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RSSI dBm
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Firmware
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Hardware
0
BLE packets
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Current activity
Recent Memfault reports
waiting for first report — these arrive on connect, every ~5 min in the reconnect loop.