Effective date: 20 October 2026

Privacy Policy

This policy also describes local storage used by features in version 1.2.9, currently in testing. Availability depends on the installed app version.

ZERYNQA is designed to help you view and understand health and fitness information stored in Apple Health while keeping that information on your device.

Information ZERYNQA accesses

With your permission, ZERYNQA may read health and fitness information made available through Apple Health and HealthKit, including measurements such as heart rate, resting heart rate, heart rate variability, steps, active energy, walking and running distance, VO₂ max, blood oxygen, respiratory rate, body weight, body fat percentage, lean body mass, sleep information and workouts. An optional heart-rate-zone feature may also request read-only access to your date of birth to estimate age-based heart-rate zones.

The exact measurements available depend on the devices and apps that write data to Apple Health.

How your health information is used

ZERYNQA uses available Apple Health information to display your current measurements, trends, workouts and calculated wellness scores such as recovery, sleep and activity scores. This processing takes place on your device.

Optional comparison settings

If you use Fitness for your age, you may enter your date of birth and select a published study reference group. ZERYNQA stores these preferences locally in the app and uses them to compare your VO₂ max with age-group reference values. These settings are not written to Apple Health or sent to a ZERYNQA server. You can edit or clear them through the comparison details screen.

Your personal step goal is also stored as an app preference on your device.

Optional daily wellbeing check-ins

In versions that offer Daily Check-in, you can voluntarily record energy, mood, aches, perceived sleep quality and whether you are experiencing concerning symptoms. Your answers are stored locally on your device. ZERYNQA uses them alongside available fitness information to explain general activity and recovery suggestions. These suggestions are not medical assessments or exercise clearance.

Live heart-rate sessions

If you use the live-session feature, ZERYNQA may save up to 30 local session summaries, including session dates, durations, heart-rate values, estimated heart-rate-zone durations and recovery-related readings. Heart-rate zones estimated from age are not individually measured thresholds.

Morning assessments and saved workout history

In versions that include the updated Morning Recovery feature, ZERYNQA saves the latest daily assessment on your device. This includes the assessment date and capture time, time zone, selected HRV and resting-heart-rate values, their sources and reference values, and the sleep inputs used for the score. Saving these inputs together keeps the assessment consistent when the app refreshes or reopens.

These versions also save a local copy of the most recently loaded workout history, including workout identifiers, dates, activity types, durations, available calorie and heart-rate summaries, and source names. This allows the app to display saved records with a notice if a later Apple Health query fails. A saved copy is not confirmation that the current Apple Health store has been read successfully.

Optional workout effort ratings

If you rate a workout as easy, moderate or hard, ZERYNQA saves that choice, its save time and the associated workout identifiers locally on your device. These ratings describe your reported effort. They are not written back to Apple Health and are not sent to a ZERYNQA server. You can change a rating or choose Clear effort in the workout's effort menu.

Managing local information

Where your app version includes Privacy & Data, you can separately delete locally saved wellbeing check-ins, delete locally saved live-session history, or reset selected fitness preferences. These actions require confirmation and affect only the named categories, not all possible preferences or cached information. You can also edit or clear comparison details within the comparison feature. Information included in an existing device backup may remain there until that backup is replaced or deleted.

The named Privacy & Data actions do not clear cached morning assessments, saved workout history or all workout effort ratings. Revoking Apple Health access does not itself erase information already saved locally. Deleting the app removes its local app data; offloading the app may retain that data. Copies in device backups are managed separately.

Deleting local information in ZERYNQA does not delete records held by Apple Health. Apple Health permissions and records are controlled separately through Apple’s Health app and device settings.

Data collection and sharing

The current version of ZERYNQA does not require an account and does not transmit your Apple Health data to a ZERYNQA server. ZERYNQA does not sell your health information and does not use health information for advertising or tracking.

The current version does not include third-party advertising or analytics SDKs.

Subscriptions and purchases

If you choose ZERYNQA Premium, purchases and subscription billing are processed by Apple through the App Store and StoreKit. ZERYNQA receives information needed to determine whether a valid entitlement is active, but does not receive or store your full payment-card details.

Apple Health permissions

You control which Apple Health categories ZERYNQA can access. You can review or revoke permissions at any time in the Apple Health app or iOS Settings. Revoking a permission may cause the related measurement to stop appearing in ZERYNQA.

Data retention

ZERYNQA does not maintain a server-side copy of your Apple Health information in the current version. Health information remains subject to Apple Health and the apps or devices that originally created it. Removing ZERYNQA does not automatically delete information already stored in Apple Health.

Children

ZERYNQA is not specifically directed at children. Health information should only be used with appropriate device, account and parental settings where applicable.

Changes to this policy

This policy may be updated as ZERYNQA develops. If data practices materially change, this page will be updated to describe the new practices.

Support emails

If you contact support, your email address and the information you choose to include in your message are used to respond to your request. Only send health information or screenshots you are comfortable sharing. Contacting support is separate from the app's on-device processing of Apple Health information.

Contact

For privacy questions or support, email [email protected].