Runs and rides from Apple Health
Cardio from any app shows up with route maps, pace and heart-rate zones.
Strength training for iPhone & Apple Watch
Get stronger every week
Log every set in seconds, see every record, and let an AI coach plan your week. Replex turns training into progress you can see.
Free to start. Pro adds the AI Coach, your own plans and full history.
160exercises with muscle maps
44ready-made plans
1 tapto log a set on your wrist
54languages
Logging
The gym tracker that keeps up
Dial the plates, log the set, beat last time. Replex remembers what you lifted and gets the next set ready before you are.
- The plate loader shows exactly what goes on each side of the bar.
- Every set starts from what you did last time, so you just confirm or add weight.
- “This would be a PR” lights up before you lift, not after.
- The rest timer starts on its own — a set time or until your heart rate recovers — and follows you to the Lock Screen and Dynamic Island.
Apple Watch
Log sets from your Apple Watch
Leave the phone in your bag. Turn the crown to set weight and reps, tap LOG, and your iPhone stays in sync in real time.
- Weight and reps on the crown, with a detent for every plate.
- A rest countdown on your wrist, with a tap when it's time to lift.
- Heart rate, zones and calories while you train, saved to Apple Health.
- Start on either device. The other one picks it up.
Progress
Watch every rep become progress
Volume that climbs week after week, every record you set, and the trend of every lift — so you know the work is paying off.
- Weekly volume, sessions and your weekly goal at a glance.
- Records for every exercise, like your heaviest weight and most reps.
- A chart for each lift, from your first session to today.
- Weekly and monthly recaps you can share.
AI Coach · Pro
Your AI workout planner
Ask for a week and get it on your calendar. The Coach reads your real training — sessions, records, runs — and plans around it.
- “Plan next week: 3 strength days and 2 runs” becomes dated sessions, at the times you train.
- It builds or edits templates from the exercise library and spaces muscle groups for recovery.
- Ask about any workout or run and get a straight answer from your own numbers.
- Nothing changes until you confirm it.
Plans
Plans built for hypertrophy
Push, pull, legs, upper/lower, full body: 44 ready-made plans to start today, or build your own and put it on repeat.
- Every plan shows the muscles it trains on a live muscle map.
- Illustrated exercises with the muscles and equipment they use.
- Schedule a plan once and it repeats on your calendar.
Share
Show off the transformation
Every finished workout becomes a story card with your volume, time and records. Post it, or keep it as proof.
Everything a lifter needs
Live Activities
Your set, rest and heart rate on the Lock Screen and in the Dynamic Island.
iCloud sync
Workouts, templates and plans on all your devices, private to you.
Muscle maps
See what a session trains before you start and what you've hit this week.
Made for every gym
Kilograms, pounds or stones; bodyweight and timed exercises built in.
Your colors
Light or dark, and three accents: Volt, Blue and Pink, with matching app icons.
Start free. Go Pro when you want more.
Free
Everything you need to log and progress.
- Unlimited workout logging with the plate loader
- 5 bodyweight plans and all 160 exercises
- Records and progress for your last 5 sessions
- 5 workouts started from Apple Watch
- Share cards in Graphite and Chalk
Pro
For lifters who plan ahead.
- AI Coach: plans your week, answers from your data
- All 44 ready-made plans, your own templates and a scheduled calendar
- Full history with weekly, yearly and all-time views
- Unlimited Apple Watch workouts
- Every share theme, with the Pro mark
Pro is available monthly, yearly or as a one-time lifetime purchase in the app. Subscriptions can be canceled anytime in your Apple Account.
Your next PR starts today
Download Replex and log your first workout in under a minute.
Questions
Do I need an Apple Watch?
No. Replex works fully on iPhone. With an Apple Watch you can log sets, run the rest timer and track heart rate from your wrist.
Is Replex free?
Yes. Replex is free to use: logging, the rest timer, 5 bodyweight plans, records for your recent sessions and 5 Apple Watch workouts. Replex Pro — monthly, yearly or a one-time lifetime purchase — adds the AI Coach, all 44 plans, your own templates and scheduling, full history and unlimited Watch workouts.
Where is my data stored?
On your devices and in your private iCloud. Workouts can also be saved to Apple Health. The AI Coach only sees what it needs to answer you, and only when you ask.
Does it work with pounds?
Yes: kilograms, pounds or stones, and the plate loader follows your unit.
Which languages does Replex support?
54, including English, Spanish, Portuguese, French, German, Japanese, Korean, Chinese, Arabic and Hebrew.