C24 Cardio

C24 Cardio is a round timer built for combat conditioning – boxing, Muay Thai and fight-style cardio.

SPARRING MODE
Set your rounds, round length and rest, then train. Clear bells, a 10-second warning and a 5-4-3-2-1 countdown keep you on pace.

TRAINING MODE
A coach in your ear: C24 Cardio calls out boxing and Muay Thai combinations during each round – jab, cross, hook, teep, low kick and more. Choose Boxing, Muay Thai or both, pick Beginner, Intermediate or Advanced, and set how often combos are called (every 5, 8 or 12 seconds). Calls never clash with the round bells.

KEEPS RUNNING WITH THE SCREEN LOCKED
Lock your phone and keep training. The timer, sounds and combo calls continue, and a lock-screen countdown lets you pause or stop without opening the app.

C24 CHALLENGES
Challenge a friend: choose the workout and a deadline, then share a challenge card on WhatsApp or anywhere. They open the link and get the exact same workout. Finish it and share a CHALLENGE COMPLETED card.

TRACK YOUR PROGRESS
See today's rounds, your weekly, monthly and yearly totals, records and your training streak.

PRIVATE BY DESIGN
No account, no ads, no tracking. Your workout history stays on your phone.