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52
BU Score
Solid

BreathTuner HRV

4.4 ✍️ Editor
✍️ BU Analytics Review

BreathTuner HRV is an iOS app from Erwin Gabler in the Health & Fitness category, currently rated 4.4★ across 38 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.

Our BU Score puts it at 52Solid (established niche player). For a Health & Fitness app, that means established niche player.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

📊 Performance Tracking LIVE

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Rating
Reviews
Forecast Revenue / mo
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💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 4 of 4 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Paid app ($0.00)METRIC
+$2,800
Good rating (4.4★)METRIC
+$800
Established app (4y old)METRIC
+$800
Pre-traction phase (38 ratings)METRIC
−$300
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 156 MB🔞 4+📱 iOS 14.0+🔖 v2.2.3🔄 updated 3mo ago🌐 EN, DE📂 Health & Fitness💰 Paid🚀 Launched 2021 (4y old)

📝 About this app

Already breathed today?

Probably! We are always breathing, but mostly unconsciously. What a pity!

Because we can achieve so many positive things for ourselves through breathing:

When you breathe at your optimal breathing rate, your heartbeat synchronizes with your breathing and beneficial, balancing and healing processes are set in motion that bring both your psyche and your body into optimal balance.

BreathTuner is the first and only app that allows you to find your personal and optimal breathing frequency. It is also called resonance frequency and is determined by analyzing breathing and heart rate variability (HRV) simultaneously.

Take the basic test and you'll know how to set your Apple Watch for Breathe (Meditation) to get the most benefit for you! Or do you use one of the many Breath-Pacers or do daily exercises to improve heart rate variability? Even then, you should use BreathTuner to find out at what breathing rate your HRV is optimal. No other app can currently give you this fully automated functionality. Did we mention that the basic functionality costs next to nothing?

BreathTuner uses scientifically proven algorithms, is based on the latest research and uses high quality and proven HRV technology from our HeartBreath app. BreathTuner guides you through a series of simple exercises while being paced by the soothing breath sounds of the VaYou Biofeedback app. The BreathTuner measurement is at once a relaxing and even meditative exercise that enjoyably centers your mind on the flow of your breath. In doing so, the app measures your abdominal breathing and heart activity, and it does it all using only your iPhone! For this, we went to the technical limits.

You don't need an extra sensor, but you can use a chest strap like the Polar H10 as an alternative for pulse detection. This captures a real ECG and we analyze it for the HRV calculation. But BreathTuner works just as well with the finger pulse measured via the iPhone camera.

And if you want to become a BreathTuner Pro-User, even more detailed analysis is available via an In-App Purchase. You can then determine your individual breathing resonance frequency with very high accuracy!

BreathTuner was developed with the utmost care by the makers of the apps HeartBreath HRV and VaYou Breath Biofeedback. You get a quality product at the cutting edge of scientific research with the most beneficial breathing sounds available in the world today.

BreathTuner integrates with the Apple Health app (Mindful Minutes).

To breathe costs nothing, also air is fortunately still free and BreathTuner is at your disposal - almost free! Awaken your full potential - and use your individual and optimal breathing frequency - best right here, right now.

In this spirit - all the best on the way to you and don't forget to always take a deep breath - your BreathTuner

🆕 What's New · v2.2.3

Thanks for using BreathTuner!
This version contains performance improvements and bug fixes.
For any issues, please contact: info@breathtuner.app.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
BreathTuner HRV
Developer
Erwin Gabler
Bundle ID
at.xsd.BreathTunerX
App Store URL
Open in App Store
Category
Health & Fitness
Content rating
4+
Languages
EN, DE

Company

Website
breathtuner.app
Tagline
Startseite - BreathTuner HRV
Description
Bestimme deine optimale Atemrate Die App führt dich durch eine Reihe von Atemübungen und ermittelt deine optimale Atemrate. Training mit dieser Atemgeschwindigkeit hilft bei Stress- und Angstzuständen, der Verbesserung der Schlafqualität, bei Problemen mit Bluthochdruck usw. Die Atemübungen sind dabei so gestaltet, dass sie mit hochwertigen Sound-Flows und gesprochenen Anleitungen auch entspannend wirken und dein […]
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
OG image

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$86/mo
Top-grossing rank
Outside top 100 in US Health & Fitness
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
https://breathtuner.app/blog/
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
info@breathtuner.app
Phone
Not found
Contact page
https://breathtuner.app/contact/
About page
Not found
📈Ratings growth38 ratings+3700% lifetimeShow 3-year history estimate ▾Feb 2023Oct 2024May 2026
Tracked (5 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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