Koji Taniguchi

Koji Taniguchi

Building wellness apps for Apple Watch
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Indie developer in Singapore. Building HRV Flow — a free daily condition score for Apple Watch. No extra wearables. No subscriptions. All data stays on your device.

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Koji Taniguchi•

1d ago

HRV Flow - Free daily condition score for Apple Watch — and your iPhone

A free daily condition score for Apple Watch — no extra wearables, no subscriptions. HRV Flow turns your wake-up HRV, resting heart rate, and sleep into a 0-100 score every morning. Score insights tell you what changed: "Wake-up HRV was low" or "Sleep was short." Score low? Try a 1-minute breathing exercise on Watch or iPhone. Watch your heart rate drop from 82 to 68 bpm. Score → Breathe → See the change. 11 breathing patterns, recommended by time of day. All data stays on your device.
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