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80
BU Score
Excellent

Instant Herzfrequenz

4.9 ✍️ Editor
✍️ BU Analytics Review

Instant Herzfrequenz is an iOS app from Bodymatter, Inc. in the Health & Fitness category, currently rated 4.9★ across 228,813 ratings. Initial signal reads as mostly critical sentiment so far — users flag rough edges and unmet expectations.

Our BU Score puts it at 80Excellent (strong product-market fit). For a Health & Fitness app, that means strong product-market fit.

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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Range:

💰 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 11 of 11 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
High install base (228,813 ratings)METRIC
+$12,000
Paid app ($0.00)METRIC
+$2,800
Excellent rating (4.9★)METRIC
+$2,200
5 starREVIEW
+$1,800
cancelledREVIEW
−$1,500
excellent appREVIEW
+$1,500
Mature app (15y old)METRIC
+$1,500
Multilingual (17 languages)METRIC
+$1,500
highly recommendREVIEW
+$1,400
slowREVIEW
−$1,200
priceyREVIEW
−$800
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.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Jun 25
Jul 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Jan 26
Feb 26
Mar 26
Apr 26
May 26

⭐ 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 →
💾 111 MB🔞 4+📱 iOS 17.0+🔖 v8.2.0🔄 updated 4mo ago🌐 AR, NL, EN, FR, DE +12📂 Health & Fitness💰 Paid🚀 Launched 2010 (15y old)

📝 About this app

Most accurate and easy-to-use heart rate app
- Used in heart research at UCSF!
- Get your heart rate in less than 10 seconds
- Check your stress levels
- See trends and insights

Just featured in Apple's new TV Ad “Strength” - use your iPhone to find out your heart rate in less than 10 seconds!

You DON’T need a dedicated heart rate monitor to get your pulse, download Instant Heart Rate today and use your camera’s flash to see how healthy you are!

With over 35 million users, the award-winning Instant Heart Rate app is all over the web.

Featured in: CNN, The New York Times, Chicago Tribune, The Guardian, and many more.

#1 Heart Rate app in United States
#1 Heart Rate app in Japan
#1 Heart Rate app in United Kingdom
#1 Heart Rate app in Australia
#1 Heart Rate app in Germany
#1 Heart Rate app in France
#1 Heart Rate app in China
#1 Heart Rate app in Russia
#1 Heart Rate app in Canada
… and many more.

Instant Heart Rate is continuously rated as the world’s best mobile heart rate measurement app and is trusted by Stanford’s leading cardiologists for use in clinical trials.

---------------------

* Place the tip of your index finger on the iPhone’s camera, and in a couple of seconds, your pulse will be shown!

* Instant Heart Rate detects a color change in your finger tip each time your heart beats and uses an advanced algorithm to show you your heart rate.

* A real-time chart will show you every heartbeat, similar to pulse oximeters used in hospitals.

---------------------

MAIN FEATURES:

√ Heart rate measurement 


√ Heart Rate Activity Zone Calculator

√ Pulse waveform graphs

√ Real-time pulse graph

√ Continuous or Auto-Stop mode


√ Unlimited data storage and tags



√ StandUp test for fatigue and fitness testing

√ Apple Health App Support (Instant Heart Rate Settings -> Health App Sharing)

-------------------------

Upgrade to Premium to receive unlimited access to Premium features through renewable iTunes subscription.

We offer auto-renewing subscriptions with the following specifications:
- Subscriptions are 1 month or 12 months long
- Subscriptions are $9.99 USD per month or $59.99 USD per year.
- Payment will be charged to iTunes Account at confirmation of purchase
- Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
- Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal
- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
- No cancellation of the current subscription is allowed during active subscription period
- Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication.

Our Privacy Policy and Terms of Use: http://instantheartrate.com/privacy-policy-and-terms-of-use

NOTE: Make sure that your fingertip completely covers the camera lens. Press gently, since pressing too hard reduces blood flow in your finger and it's harder to get a result. Make sure that your fingers are not cold. This app is for recreational and fitness use only!


* NOT INTENDED FOR MEDICAL USE, FOR FITNESS USE ONLY

"Continued use of GPS running in the background can dramatically decrease battery life."

From our heart to yours,



Instant Heart Rate Team

🆕 What's New · v8.2.0

• Check out the brand new Instant Heart Rate experience!
• Includes general performance enhancements and bug fixes

Enjoying Instant Heart Rate? Take a brief moment to rate us on the App Store! Want to give us feedback? Send us a note at support@instantheartrate.com

Profile & Insights

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

Identification

App name
Instant Herzfrequenz
Developer
Bodymatter, Inc.
Bundle ID
si.modula.instantheartrate.free
App Store URL
Open in App Store
Category
Health & Fitness
Content rating
4+
Languages
AR, NL, EN, FR, DE, IT, JA, KO, PT, RU, ZH, ES, SV, TH, ZH, TR, VI

Company

Website
Not found
Tagline
Measure your heart rate instantly with your finger & phone camera
Description
Not found
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
$100.0KAI medium
AI annual estimate
$1.2M/yr
ML model estimate / mo
$7.1K/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
https://x.com/heartrateapp
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
Not found
Press / News
Not found

Contacts & Socials

Socials
facebook · twitter
Email
Not found
Phone
Not found
Contact page
Not found
About page
Not found
AI Revenue EstimateCONFIDENCE: MEDIUM
The iOS app "Instant Herzfrequenz" by Bodymatter, Inc. is estimated to generate approximately $100,000 in monthly revenue, leading to an annual estimate of $1.2 million. This is based on data from app intelligence platforms.
Sources mentioned: Sensor Tower, Adapty, Owler, PitchBook, Apple App Store
Recent App Store Reviews49 latest · avg 1.61★ · 10.2% 5★ · 75.5% 1★
5★
5 (10%)
4★
1 (2%)
3★
1 (2%)
2★
5 (10%)
1★
37 (76%)
+23,731 ratings/week
Praise: best ×3 love ×2 great ×1 recommend ×1Complaints: subscription ×8 refund ×6 scam ×4 worst ×1 terrible ×1
Top positive
★★★★★ Heart rate finally
One of the best apps for the iPhone I ever used…
★★★★★ Lovely app, noticed advances in design!
Used since 2018, love the simplicity~accuracy, peace of mind it offers. Free, thank you!…
Top negative
★☆☆☆☆ Not accurate
I was in the ER and tested this. It was 20 points higher than the one in the ER. Made me believe I was in more danger than I actually was along with my other symptoms.…
★☆☆☆☆ Finger BP?
Several of this type of health app advertise having the ability to take BP directly from a finger. Blatant false advertising and they all need to take that down. If you want BP you will have to have a BP cuff.…
📈Ratings growth228,813 ratings+8% lifetimeShow 3-year history estimate ▾May 2023Nov 2025May 2026
Tracked (54 weeks) Pre-tracking estimate (34 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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