Privacy Policy
Last updated September 26, 2026
Information We Collect
None. ObCalc does not collect any information about you or your patients. The app contains no analytics software development kits (SDKs), no crash-reporting services, and no advertising identifiers.
The One Network Request
The only network request ObCalc makes is an anonymous download of the app's acknowledgements text — the list of clinicians and authors credited in the app. It sends no personal, patient, or usage data, and the server that answers it does not log the request. The app checks for new acknowledgements at most once a day and when you open Settings → Acknowledgements; if you're offline, nothing happens and it tries again later. Every calculator works fully offline.
How Your Data Is Stored
Any values you enter — patient measurements, dates, lab results, or clinical parameters — are held only in the app's memory for the duration of your session and, for your app preferences (such as theme, accent color, unit preferences, and your personal library of saved calculators), in local device storage (UserDefaults) that never leaves your device. Nothing you enter is ever uploaded. The downloaded acknowledgements text is also stored on your device so it's available offline.
No Analytics or Tracking
ObCalc contains no analytics, no advertising networks, and no tracking pixels. We have no way of knowing which calculators you use, how often you open the app, or any other usage pattern. There is nothing to opt out of, because nothing is collected in the first place.
No Third-Party Services
ObCalc does not integrate any third-party SDKs that transmit data off your device. There are no embedded web views loading remote content and no in-app purchases beyond the one-time App Store purchase handled entirely by Apple under Apple's own privacy policy.
No Account Required
ObCalc does not require — or offer — account creation, sign-in, or cloud sync. There is no login, no password, and no identity of any kind associated with your use of the app.
Children's Privacy
ObCalc is a professional clinical reference tool intended for licensed healthcare professionals and is not directed at children. In any case, the app does not collect personal information from anyone, of any age.
Changes to This Policy
If this policy ever changes — for example, if a future version of the app adds a feature that involves data collection — this page will be updated first, with a revised "Last updated" date above, before that feature ships.
Contact Us
Questions about this policy can be sent through our contact form.
Code Nine Labs, LLC is the publisher of ObCalc.