A cardio app built around consistency.
Created by physiology professor Carl Becker, Cardia World gives your regular movement a visible place to accumulate. It is a fitness motivation game for the activity you choose, with manual cardio logging, optional Apple Health workout sync on a compatible iPhone, and free world building on iPhone and iPad.
Looking for help making movement part of your week? Read how to build a consistent cardio habit for a practical routine you can adapt.
See your consistency take shape.
A completed workout can feel abstract once the timer stops. In Cardia World, qualifying cardio adds to the same world over time: a clearing becomes a home, then neighborhoods, towns, cities, and eventually a planet. The world is a record of your effort, with residents, scenery, and places to discover as you progress.
That growth takes repeated activity. A city or planet represents accumulated progress, rather than a promise that one workout unlocks everything.
A simple loop for your existing routine.
- Choose your daily cardio goal. Pick a goal that fits the routine you already follow. At least 15 recorded cardio minutes in a day qualifies for construction progress.
- Record your activity. Log cardio manually, or allow Cardia World to read supported workouts from Apple Health on a compatible iPhone. Separate sessions on the same day contribute to the daily total.
- Explore what you built. Open World to see your settlement, then return to keep building through consistent activity.
A fitness game with room for your own style.
Start with Cozy Heritage, Modern Grove, or Future Bloom. Each has its own buildings and atmosphere. As your world grows, you can name the places you create and visit friends’ worlds after connecting in Friends.
The core world-building experience and Friends are free. Optional Cardia World Pro adds premium styles, customization, and Cardio Battles. You can keep using the free experience without subscribing.
Before your first build
Do I need Apple Health to use the app?
No. Manual cardio logging is available on iPhone and iPad. Apple Health is optional on a compatible iPhone and requires your permission.
Does Cardia World work with Apple Watch?
Record a supported workout using Apple Watch’s Workout app or another app that saves to Apple Health, then open Cardia World on your compatible iPhone to sync. Cardia World runs on iPhone and iPad; an Apple Watch is optional.
Is this a workout plan?
Cardia World helps you record activity and see game progress. You choose your own activity; the app does not prescribe a training program.
Can walking count as cardio?
Yes. Record walking as cardio manually, or sync a supported walking workout through Apple Health. Read the walking guide for the difference between steps and recorded minutes.
Make the habit your own.
Set a weekly routine with protected rest days, save captured world views to your private journal, and connect with friends through visits, messages and gifts. Pro adds monthly collections, more styles and personalization, Cardio Battles and Co-op Cardio Mission hosting. Explore all current features and preview the next update.