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Coherence App

HRV Biofeedback & Breathwork
TICTACTEL · Health & Fitness
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★ 1.00average rating
1ratings
+0new ratings, last 7 days
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Ratings breakdown

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100%
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App info

Developer
TICTACTEL
Category
Health & Fitness, Lifestyle
Released
Feb 27, 2026
Version
1.5 (Apr 16, 2026)
Price
$3.99
Size
14.9 MB
Requires
iOS 18.6
Age rating
9+
Languages
English and Spanish

In-app purchases

none
Current prices, App Store US.
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About Coherence App

Stop guessing recovery. Just breathe and observe your body improve through ITFD-guided breathing, HRV analysis, and clearer autonomic insight. Coherence is a structured physiological evaluation app built around Heart Rate Variability (HRV) and guided breathing sessions. It does not measure relaxation. It evaluates autonomic behavior, cardiac coherence and recovery patterns through structured session analysis. HOW SESSIONS WORK Sessions are started from Apple Watch. Breathing is guided using haptic feedback and color cues: • Haptic + blue = nasal inhalation • No haptic + green = nasal exhalation Inhalation timing is detected algorithmically in real time. The ITFD algorithm continuously evaluates HRV dynamics and determines the optimal breathing rate and inhalation–exhalation structure during the session. Signal acquisition is performed through Apple Watch. When available, external chest…
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