Breathe Flow vs Coachi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Breathe Flow
This app analyzes your breathing and heart rate using smartwatch ECG data to provide insights into your health. It offers guidance on improving breathing, reducing stress, and understanding how lifestyle factors impact your well-being. The app also introduces data ownership through VAGUS tokens.
- 30-second ECG test for breathing analysis
- Personalized advice for breathing and stress reduction
- Smartwatch data ownership with VAGUS tokens
- VAGUS® ideal breathing curve guidance
- Analysis of food, drink, and sleep impact on health
- HRV & Breathing Sync Analytics subscription
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WHY BREATHE FLOW? • Learn more about your breathing and health with a 30-second ECG test. • The app will give you advice on how to improve breathing, reduce stress and gain a better understanding of how food, drink or sleep is influencing your cardiac/respiratory health. • Receive real ownership of your smartwatch data. • It is free – do as many tests as you want. This is the first ever app to show the breathing-induced flow and the breathing induced pulse variation (HRV) - generated from your smartwatch ECG signal. The test lasts only 30 seconds. Breathe Flow is not a usual breathing advisory app. It shows your real breathing and it teaches you how to do controlled breathing with the 'VAGUS® ideal breathing curve'. **** With this app we also launch the VAGUS® wallet and ownership tokens, which enable data ownership and rewards for the data. *** ON WHICH WATCH CAN I DO BREATHE FLOW TEST? Your smartwatch must have an ECG sensor. These are included in Apple Watch Series 4 and newer (not version SE), Samsung Galaxy Watch 4 and newer versions, Withings ECG watches **** INSTRUCTIONS FOR YOUR 1ST TEST: • Apple Watch: Firstly open the Breathe Flow app and keep it live on your phone. Open 'Choose your device' page and connect with Apple Health, please allow Breathe Flow app access to all listed data. Then open Apple's ECG recording app on Apple Watch and follow its instructions for a good signal. • Withings ECG Watches: Open the Withings "Health Mate" app on the phone. Keep BREATHE FLOW live. Record according to Withings instructions. VAGUS® TEST: • Follow the instructions how to do the ECG recording. Start by inhaling calmly for 5 seconds, then exhale for 5 seconds. Continue this breathing pattern for 30 seconds (3 cycles of controlled breathing). • ECG quality improves when you sit by a table. Hold your hands and elbows on the table. Let your breathing and pulse calm down before doing the test. Follow the smartwatch instructions and test again if the ECG recording is bad. • Swipe down on the Breathe Flow home screen to activate download and analysis. • Wait for about 10 seconds until analysis appears on the Breathe Flow app. Swipe down again to update the Breathe Flow screen. (Time delay is depending on network speed) • Answer the Q&A in English to receive a summary analysis and unlock Breathe Pulse. • We recommend doing at least three BREATHE FLOW tests daily to learn how your actions impact your health and to collect high quality data for your V-NFT. **** DATA OWNERSHIP with VAGUS TOKENS. VAGUS® non fungible tokens (V-NFT) are standardized ring-fenced and anonymized data packages, each consisting of 10 unique days of VAGUS® tests, your Q&A text, other data from your smartwatch, and data generated by VAGUS® analytics. We will automatically register a non-blockchained V-NFT when you have done at least 10 days of testing. You find your ownership- and reward tokens in the VAGUS® Wallet. **** WHAT OTHERS SAY ABOUT THE VAGUS® ANALYTICS: This is one of the most cutting-edge ways I've ever seen to know how your nervous system is really doing – far more promise than even Heart Rate Variability, which was the gold standard. – Dave Asprey, 'Father of biohacking', Founder of Bulletproof **** MEDICAL DISCLAIMER: The BREATHE FLOW app, its test and the analysis data or advice are not medical diagnostics tools and they should not be used as such. **** For more information visit: www.vagus.co. We strongly recommend reading our blogs and follow the vlogs for further information. If you want to track historical data and get more analytics information from the test; subscribe to the Vagus Nerve Explorer feature through the app's settings
Coachi
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Coachi is an all-in-one health platform that will help you successfully plan, organize and track all aspects of your health. The app packs in plenty of features that are easy to use, yet powerful with the aim of achieving your health goals. *Please consult your doctor about the information contained in the application before making any decisions about your health. All the content of chatbot is produced by AI and does not contain any certainty. For more information: https://medsafe.io/en/privacyverklaring/
Screenshots
Verdict
The clearest difference is in-app purchases: Coachi at none against Breathe Flow's 2. Breathe Flow's advantage is device support (3 vs 1) and iOS requirement (14.1 vs 16.0). On price, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Breathe Flow sells 2 in-app purchases, starting at $4.49 per month. Coachi asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 20, 2026 and October 14, 2026 respectively.
| Parameter | Breathe Flow | Coachi |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (4 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod, Apple Watch — better | iPhone |
| Requires iOS | 14.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 62 MB | 198 MB |
| Age rating | 4+ | 17+ |
| Developer | Vagus Health Ltd | MedRecord B.V. |
In-app purchases
Breathe Flow
- HRV & Breathing Sync Analytics3 Days trial$4.491 Month
- V-NFT add on$0.99
Coachi
No in-app purchases









