Cardia World
Turn your cardio into a world with places to name, stories to follow and progress you can see. Created by a physiology professor, Cardia World is free to start on iPhone and iPad.
These features are included in the update awaiting Apple approval. The current App Store app remains available; version 1.1.36 brings the additions below when it is released.
Discover 24 short cardiovascular lessons and 72 quiz questions, unlocked through qualifying cardio days. Your first lesson opens on your first cardio day; you can learn with your acting Mayor before your first election.
Read at your own pace, check answer explanations, retry quizzes and keep private best scores. The lessons link to educational sources. All Mayor lessons and quizzes remain free.
After four different qualifying cardio days, elect and name a human or pet Mayor. Keep your leader as the world grows or choose a new one at later leadership milestones.
Your smaller Mayor stands on a floating cloud near HQ. Layer clothing and accessories, color each garment separately, choose one headpiece—a cap or crown—and turn the vest, pin and scarf on or off.
Tap either shiny gold Customize control in World to reach premium customization. Aurora Retreat, Golden Haven and Garden Escape show three complete looks for you to explore before subscribing.
Free previews show a day-30 example and leave your real progress unchanged. With Pro, apply the choices you have earned; future customization milestones still require cardio days.
Get Cardia WorldThe Wellness Library includes 16 source-linked guides across Move, Sleep, Nourish and Reset. Pro unlocks every guide and a rotating daily read. Everyone can read three sample guides for free.
Find the library from Home, Settings or Progress. Topic filters help you choose a read, and selecting a guide brings its heading into view. This is general education, not personalized medical advice.
When a friend’s buildings need repair, send a repair encouragement notification through Friends. It is a simple reminder that another cardio day can help their world recover.
One-link invitations, visits, messages and gifts keep your shared progress close. Bring in your Apple Music playlists and share playlist links with friends.
Buttons near the top of longer app pages jump straight to the section you choose. Home makes free heart lessons, Pro wellness and premium customization easier to discover.
Pro screens show Apple’s monthly and annual prices and any eligible trial before purchase. Opening a preview or plan never starts a purchase by itself.
Cardio days mean different qualifying dates, not extra logs on the same date. Lessons, Mayor personalization and Pro look previews are free; applying premium world customization and the full wellness library require Pro.
Start with a goal that fits your routine. Record at least 15 cardio minutes on a date to make it a qualifying day. Several logs on the same date still count as one day.
Walking, running, cycling and other recorded cardio help construction. Additional minutes contribute build points and small structures. Daily steps support vitality, happiness, greenery and weather.
Sync supported Apple Health workouts on a compatible iPhone or log manually. Apple Watch workouts can count when they are saved in Apple Health.
Choose planned cardio days in your weekly routine. Other days become protected rest days from the day you save. Set reminders for the days and times that work for you.
When you return after an absence, cardio helps restore your world while preserving earned progress.
Three free styles—Cozy Heritage, Modern Grove and Future Bloom—give you different ways to begin. Pro adds Neo City, Solar Garden and Zen Valley.
Your world follows local day and night, with evening lights and moving details. Explore homes and headquarters, and start earning naming rewards from cardio day three.
Save a real captured view from World, then revisit it in Progress → World journal. Keep your latest 36 moments and compare how far you have come.
Journal captures stay on this device unless you enable optional private journal backup, which is separate from world-progress backup. Share an image only when you choose.
Check cardio days, lifetime minutes, the next reward and your activity history. Open How did this count? for an explanation of newly credited activity.
Construction recaps highlight what you earned. You can adjust automatic recaps in Settings and review the change when you are ready.
Rotate, zoom and tap buildings for a closer look. Develop your style’s headquarters from a foundation into a more complex landmark.
Use labeled camera controls, Battery-saving world and optional guidance. Send feedback from Settings, with device details and a world image included only if you choose them.
Connect by username or a friend invitation, visit each other’s worlds, and explore named places and displayed gifts. Friends can see shared cardio-day and lifetime-minute totals.
Message friends with 14-day conversation history. Once both friends reach three cardio days, exchange gifts using Cardia dollars earned through activity.
A hint arrives on cardio day two. From day three, follow a 24-chapter mystery written for your world style and choose your replies.
From cardio day five, use Research to discover special structures and gifts. A separate Gift Shop makes earned keepsakes easy to find and send.
Hear from your world’s mayor when missed planned cardio days affect the town and when your return begins its recovery. Letters arrive inside the app and remain available in the correspondence archive.
Protected rest days do not count as missed days. Reading a letter does not change your activity or earned progress.
Core world building stays free. Optional monthly and annual Pro plans are shown in the app, with any eligible trial offer confirmed by Apple.
Arrange your terrace in Pro Design Studio, described below.
Qualifying cardio days during the month unlock targets at days 1, 3, 5, 8, 12, 16, 20 and 24. Dates do not need to be consecutive. Preview every piece, collect eligible pieces with Pro, and display three owned favorites at once. Earned pieces remain yours if your subscription ends.
These additions are available in Cardia World 1.1.29. Update from the App Store to find journal videos, mayor elections, one-link invitations and more.
Create a short rotating video automatically from a saved journal view. The footer shows the total cardio minutes saved with that moment.
Creating the first video earns a Showcase Pavilion. Creations in later weeks can add banners, up to three appearances. Posting to Stories is always optional.
Browse image previews grouped by date, sort newest or oldest first, and filter images or entries expiring soon. Select several entries to save their images to Photos or delete the journal copies together.
Entries stay for up to 30 days and clear when you open the app. The 36-entry limit still applies. Existing entries receive a fresh 30-day age window with the update; images you save to Photos stay on your phone.
Complete your fourth distinct qualifying cardio day to elect a mayor. Choose a name just as you would for a building, and rename your mayor any time.
Future letters use your chosen name. Archived letters keep their original signatures, and your mayor is included in your private world-progress backup.
Apply earned Skies from cardio day three and Paths from cardio day six. Qualifying cardio days count consistently, including restoration days. Extra minutes do not replace distinct days.
Later abilities remain available to preview as you work toward them. Subscription access refreshes when you open Settings.
Send one invitation link. A new friend opens it and taps Accept invitation, with no code to type.
When they accept within their account’s first seven days and complete three different qualifying cardio days after acceptance, you both earn a Friendship Garden. Connecting as friends remains a separate choice.
Pick a greenhouse, cozy café or windmill. Starting when you first open the update, every three qualifying cardio days earns the next selected small build.
These extras sit alongside your main town’s progression. Every qualifying cardio day retains construction credit, including days spent rebuilding.
Named neighbors react to your progress and your world’s condition. Help Pip choose a flower or vegetable garden for the terrace.
Your choices give the place your cardio builds a little more personality.
Opt into a weekly community effort toward 30 combined qualifying cardio days. Join first, then complete three different qualifying days of your own to earn the Community Fountain when the group finishes.
The project shows combined day totals. Participation is optional.
Arrange earned small buildings, rewards, gardens and paths across nine terrace plots. Rotate pieces and save three named layouts with Pro.
Open saved layouts in a full-screen preview. Save and Apply shows the resulting layout immediately. Your active saved layout remains after Pro ends.
Add a small or medium widget on a supported iPhone or iPad. See a saved world image, your cardio-minute total and the next reward at a glance.
Enable it in the app, then add it with your device’s Home Screen widget controls.
Turn on optional private journal backup to keep up to 36 recent captures and saved rotating views with your account. Journal expiry and deletions follow the same rules when backup syncs online.
Backup starts off. Restore your moments on another device, or turn backup off and delete the cloud journal. This is separate from ordinary world-progress backup.
More detailed materials, lighting and atmosphere across all six styles bring the landscape to life. Camera transitions keep you in the world as you move between places.
Enter your full 3D world with one tap on World. Friend visits also open directly into exploration, with the same continuous camera views.
Start free on iPhone or iPad. Build at your pace, explore with friends, and find what keeps you moving.
Download on the App StoreWatch the app demo · Find help and FAQs · Read the privacy policy