Build the workout. Run the session.
A mobile workout timer app that guides custom intervals, EMOMs, presets, and shared Session Cards by voice.
Press start, put the phone down, and follow the cues.
Use Kairox free with one saved workout. Upgrade to Pro when you need more saved workouts and Pro features.
A real Kairox session: phase, timer, next exercise, and progress called out while you train.
Inside Kairox
See the session before you start it
Run the session
Run the workout hands-free. Follow the current phase, next exercise, round, and whole-workout progress.
Build the workout
Choose the workout format: your own work and rest times, or EMOM 60s slots.
Start or share faster
Presets to start. Session Cards to share.
Start from a ready-made preset, then adjust rounds, work, and rest before training.
Turn any saved workout into a Session Card from inside the app.
EMOM sessions share as a card with 60s slots listed per exercise.
Session Cards turn a saved workout into an importable code.
The problem
Sessions fall apart mid-workout
Most workouts fall apart after the first set: you lose the next movement, stretch rests too long, forget sides, or keep checking your phone.
Kairox turns the plan into a guided session.
How it works
Three steps to a guided session
Build or import
Use the Builder, a preset, or a Session Code.
Set the structure
Rounds, work/rest timing, warm-up, cooldown, reps, sides, transitions, and EMOM targets.
Press start
Kairox calls the session while you train.
Features
Everything the session needs
Workout Builder
Build sessions with exercises, rounds, reps, sides, timing, warm-up, cooldown, and transitions.
Voice cues
Hear work, rest, next exercise, round count, halfway, ten seconds, and completion cues.
EMOM mode
Give each exercise a 60-second slot with reps, time, or move-for-minute targets.
Presets
Start from ready-made structures for intervals, strength circuits, boxing, mobility, EMOM, and more.
Saved Workouts
Keep your sessions ready instead of rebuilding timers from scratch.
Session Cards
Share a workout as a card with a Session Code so someone else can import it.
Free and Pro
Start free. Upgrade when you need more.
Free
Use the timer and keep one saved workout without paying. Presets, voice cues, and the Builder are there from the first session.
Session Cards
Share a workout, not a screenshot
- Create a Session Card from a saved workout.
- Download it as a PNG.
- Share it with a client, audience, or training partner.
- They import it with the Session Code and run the workout in Kairox.
Who it's for
Built for people who train with structure
Honest limits
What Kairox is not
- Kairox is not a form-coaching app.
- Kairox is not medical advice.
- Kairox is not a nutrition tracker.
- Kairox is not a social network.
- Kairox does not promise reliable locked-phone or background workout execution.
FAQ
Common questions
Is Kairox free?
Yes. You can use Kairox free with one saved workout. Pro unlocks more saved workouts and Pro features.
Do I need an account?
No account is needed to use the timer. An account is needed for Pro, Sync, and creating Session Cards.
Can I share workouts?
Yes. Create a Session Card from a saved workout and share the Session Code.
Does Kairox support EMOM?
Yes. EMOM workouts use 60-second slots with reps, time, or move-for-minute targets.
Does Kairox work offline?
Saved local workouts can run after Kairox has been opened on your device. Cloud features need internet.
Does Kairox work when my phone is locked?
Kairox works best while the app is open and foregrounded. We do not currently promise reliable locked-phone or background execution.
Does Kairox coach exercise form?
No. Kairox runs the workout timer and cues; it does not coach exercise form or provide medical advice.
Can creators earn with Kairox?
Yes. Kairox has an affiliate program — see the affiliate page and the creator resources.