Cardia World is a fitness motivation game that requires an account. Manual cardio remains available if you decline Apple Health access.
Apple Health and activity
With your permission, the app reads step count, workouts, walking and running distance, active energy, and Apple Exercise Time. Daily steps and qualifying workout duration update the game. Workout identifiers stay on the device to prevent duplicate credit. You can manage Health access in iPhone Settings. We do not write to Apple Health, sell Health data, use it for advertising, or expose Health records to friends.
The app stores daily activity totals, workout dates and durations, goals, world progress, styles, and preferences on your device. A private account backup also stores daily steps and cardio totals, workout dates, durations and activity labels, goals, world progress, styles, and preferences for restoration on another device. It does not store original HealthKit record identifiers.
Social features receive capped daily game totals (cardio minutes up to 120 and steps up to 10,000), source labels, a shared world stage, and broad status. The backend does not receive heart rate, weight, diagnoses, or original HealthKit sample identifiers. Battle opponents can view aggregate game scores and active-day counts.
Accounts and social features
An account uses your email address for authentication and stores your username, avatar, friendships, requests, privacy choices, reports, Battle invitations and results, and world metadata. Your real name is not required. Friends can visit your game world according to your settings. You can block or report other users. Shared images leave the app when you choose to share them. Cards sent to friends are checked by an automated moderation provider, which receives the image for that safety check. We do not sell data or run advertisements.
World journal, videos and optional backup
The world journal keeps the latest 36 captured moments for the signed-in account. Journal images remain on the device unless you enable optional private journal backup. Journal backup is separate from the account’s world-progress backup.
Cardia World 1.1.29 can also save a captured world’s rotating-view data and cardio-minute total to create a short video. Optional journal backup is off by default. Turning it on uploads up to 36 recent journal captures and their saved view information to private account storage for restoration on another device. You can turn backup off and delete the cloud journal from World activities. Deleting the account also removes its cloud journal media.
The app also provides individual and bulk deletion and a 30-day journal age limit, checked when the app opens or returns to the foreground. Existing entries receive a fresh 30-day age window when the update first opens. The maximum of 36 recent entries still applies, so adding another can replace the oldest earlier. Expiry deadlines and deletion records are included in optional private backup, and cloud cleanup follows synchronization when online.
Images and videos leave the app when you choose a sharing destination or save them to Photos. Saving journal images directly to Photos requests permission to add images only; this feature does not read your photo library. Videos are saved when you choose Save Video. Copies already saved to Photos are not removed by journal cleanup. Creating a video can earn an in-app reward without posting to social media.
A mayor name you choose is stored as game-world metadata and included in the account’s private world-progress backup. It does not need to be a real person’s name.
Invitations, community activity and widgets
The app uses an invitation code carried in a link, acceptance status and qualifying game-day counts to award a Friendship Garden. Invitation details may be retained on the device and with the account through signup until accepted or dismissed. They are navigation hints, not access to another person’s account or Health records. Weekly community builds show combined game-day totals, not individual Health records.
If you enable the Home Screen widget, it uses an on-device copy of a saved world image, game totals and next-reward information. Widget data is cleared when changing accounts. A widget does not send Health records to other users.
Feedback you review before sending
Settings → Send feedback prepares an email for you to review. Device details and a world image are optional attachments that begin switched off. They are sent only when you choose to include them and send the message.
Purchases
Apple processes Pro subscriptions. The app checks entitlements through StoreKit, and a server verifies signed transaction details for competitive features. Cardia World does not collect payment card numbers.
Security and deletion
Authentication uses Supabase. The iPhone stores its session in the device Keychain. Backend access rules limit social data to permitted users. Erase device data in Settings, delete your account in Friends, or contact support@cardiaworld.com. Account deletion removes associated server records; local deletion is a separate action.
Children and health
The app is not intended for children under 13. It does not provide medical advice, diagnosis, or treatment. Consult a clinician about personal exercise decisions when appropriate.
Website analytics
Our public website uses optional Google Analytics to measure visits, traffic sources, pages viewed, and clicks on App Store download buttons. Analytics starts only after you choose Allow analytics. Google may then use analytics cookies and receive basic browser and device information and approximate location. Advertising personalization and Google signals are disabled.
We remove query strings and fragments from the page addresses sent to Analytics and send only the referring website’s origin. Recognized social campaign labels identify sources such as TikTok and Reddit. We do not send app account details, Apple Health records, passwords, recovery links, invitation codes, or form entries. Account, password-recovery, and invitation pages are excluded. Website button clicks are not confirmed app installs.
Choose Analytics choices in the website footer to allow or decline analytics. Your choice is remembered on this browser for up to 180 days. Declining stops analytics and clears its accessible cookies. We also respect browser Global Privacy Control and Do Not Track requests. You can use the website without allowing analytics. For Google’s handling of analytics data, see Google’s Privacy Policy.
Contact and updates
Privacy questions: support@cardiaworld.com. The effective date identifies revisions.