Support
Contact & support
Questions about Private Heart, bug reports and general enquiries.
Direct contact
Write to Dajukema.
Questions about an app, a bug report or feedback? Describe your enquiry here. Replies are sent to the email address you provide.
Please do not send medical records or sensitive health data. A problem description and, where useful, anonymised screenshots are usually sufficient for technical questions. Screenshots can be sent by email; the form has no file upload.
Frequently asked
FAQ
How does Private Heart measure heart rate and HRV?
Place a finger over your iPhone’s rear camera and flash. The app captures an optical pulse signal (PPG). Once a stable signal is detected, it records for 45 seconds. Heart rate and HRV are estimated from pulse intervals. Movement, finger pressure and measurement conditions can affect the readings.
Do I need an Apple Watch or Apple Health?
Camera measurements require neither an Apple Watch nor a chest strap. The current version is intended for iPhone with iOS 17.6 or later and has no Apple Health integration. The app is initially planned in German.
Which HRV values and trends can I see?
The result card shows heart rate, HRV as RMSSD and technical signal quality. Details also include SDNN. Trends can be viewed by week, month, quarter and year. Personal comparison ranges are built from your measurement history; initially they offer provisional orientation and are not medical reference values.
What can I log alongside measurements?
Record exercise, stress, exhaustion and feeling unwell for each day. Up to three active custom trackers with four levels each let you add topics such as sleep quality or caffeine. You can optionally log bleeding intensity. Entries are displayed alongside HRV and heart rate; this does not establish a cause.
Is the breathing rate a medical measurement?
No. Measurement details include an experimental estimate derived from variations in the pulse signal. Some recordings may not produce an estimate. The displayed internal agreement does not establish measurement accuracy.
Where is my data stored?
Private Heart is designed to process the camera signal on your iPhone and store readings, daily entries and trackers locally. No Private Heart account is required. For exports you start yourself, you choose the destination or recipient; iPhone backups depend on your iOS settings. Details are in the app privacy policy.
Can I export readings and trackers?
Yes. In Settings → Data management, export readings and tracker data as CSV for your own analysis. A complete JSON backup can be imported again. Both file formats contain sensitive data and are not encrypted by the app. You choose where to save them.
How can I delete my data?
Deleting the app from your iPhone lets you remove its local data. Offloading the app preserves that data. Previously exported files and existing iPhone backups are not automatically deleted. Archiving trackers or disabling the cycle log preserves previous entries.
Is Private Heart a medical device?
No. Private Heart is a wellness app for personal self-observation. It does not provide diagnoses or medical recommendations and is not intended to monitor medical conditions. If you have health questions, please consult a doctor.
How much will Private Heart cost?
The current development version is intended for free use without advertising. In settings, you can voluntarily support development through an in-app purchase handled by Apple. Support does not unlock additional features.
When will Private Heart be released?
No release date has been announced. Once Private Heart is available on the App Store, the link will be on the product page.
I have an idea or a feature request.
Describe which workflow or analysis you would like to see. Please describe your request without medical records, sensitive health data or complete exports.