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Life & fun · April 23, 2026

Sereno

Realtime stress insight from 20+ signals

What it does

Sereno is a realtime stress monitor for iPhone and Apple Watch that reads 20+ signals, not just HRV, to show what changed, what may be driving the shift, and whether your body is dealing with exercise strain, poor recovery, sleep disruption, or something else.

Does the same job

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