Cohera vs Healstack
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Cohera
This app guides users through breathing exercises to achieve cardiac coherence, a state where heart rate and brain activity are in harmony. By controlling breathing, users can reduce stress and manage emotions. It offers customizable durations and breathing paces.
- Guided breathing exercises
- Cardiac coherence technique
- Stress reduction
- Emotion control
- Customizable exercise duration
- Adjustable breathing pace
- Expert mode with breath-holding
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What is this app for? According to research in neurocardiology, the heart rate influences our brain. How? Cardiac coherence is the name that has been given to this technique discovered by American researchers fifteen years ago. It has been proven that the heart rate is in harmony with the brain, which means that our mind and emotions are attached to the heart rhythm. In order to control your emotions and reduce your stress, it is absolutely necessary to control the heart rate, and to achieve this you only need to control your breathing. Our application offers you the possibility to control your breathing through practical and effective exercises. This exercise will help you reduce stress and control your emotions. How to use: Just breathe in when the water drop is going up and breathe out when it goes down. A vibration allows you to follow the pace with your eyes shut. A menu allows you to specify the duration of the exercise and the number of respirations per minute. Optional features: Expert mode allows you to specify the exact inhalation and exhalation time and adds a breath-holding feature. A notification can be programmed to remind you that it is time for some exercise. - - - Cohera Premium - subscription options Premium unlocks all features, including the heart rate monitor. - Monthly Premium subscription - Annual Premium subscription Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. Any unused portion of a free trial is forfeited when you purchase a subscription. You can manage or cancel your subscriptions in your Apple Account settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: http://www.mflab.ca/privacypolicyios.html
Healstack
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Healstack is a personal substance tracker, harm reduction wiki, and health dashboard. Log doses with a journal you can filter and search, browse a 200+ substance wiki with harm reduction data, and see your health trends in one dashboard. Your data stays in your account โ no ads, no data sales. FEATURES - Dose logging with journal, filters, and search - 200+ substance wiki with harm reduction information - Health dashboard with trends over time - Private by design Healstack is built for harm reduction: honest information and personal tracking to help you make safer choices.
Screenshots
Verdict
The clearest difference is in-app purchases: Healstack at none against Cohera's 6. Healstack also leads on update cadence (every 3 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Cohera sells 6 in-app purchases, starting at $2.99 per month. Healstack asks for nothing beyond the download.
Cohera ships an update every 3 months, Healstack every 3 weeks. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.
| Parameter | Cohera | Healstack |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 11.1% of reviews | โ |
| Update frequency | Every 3 months | Every 3 weeks โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Monetization | Free with in-app purchases | โ |
| Devices | iPhone, iPad โ better | iPhone |
| Requires iOS | 16.1 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 19 MB | 5 MB |
| Age rating | 4+ | 12+ |
| Developer | Martin Forget | Joshua Trommel |
In-app purchases
Cohera
- Monthly Premium subscription$2.991 Month
- Yearly Premium Subscription$19.991 Year
- Unlock Notification Function$0.99
- Unlock User Profile$0.99
- Unlock Expert Mode$2.99
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- Buy Premium Version$24.99
Healstack
No in-app purchases









