Sleep & energy tracker app
The energy last night really gave you.
Reps is a sleep and energy app for Apple Watch. It turns last night's sleep into an honest daily energy budget — what your rest actually gives you today, not an optimistic guess. And when it doesn't have real data, it tells you.
Apple Watch Series 6+ · Free to try
An energy budget built from real sleep
Most trackers hand you a sleep score and stop there. Reps turns the night into a plan for the day.
When you wear your Apple Watch overnight, Reps reads what your sleep actually was and builds a daily energy budget from it — an honest read on what last night gives you today. It's not a motivational number and it's not a guess. It's the difference between "you should feel great" and "here's what you have to work with," so you can decide how hard to go.
And when the data isn't there, Reps says so instead of guessing optimistically. A missed night of wear means an honest gap, not an invented figure. That honesty is the whole point — a budget you can trust because it never pretends to know more than it does.
Honest by default
The energy budget comes from last night's real Apple Watch sleep — what your rest actually gives you today, never an optimistic guess.
No data, no bluffing
If Reps doesn't have real sleep to work from, it tells you rather than making something up. An honest gap beats a fake number.
Feeds your readiness
Sleep also drives the daily Readiness Score alongside HRV and training load, while the energy budget frames how hard to go today.
Rex explains the night
The AI coach — on-device where supported — reads your own data to explain why a bad night landed the way it did.
Uses the Apple Watch you already own
There's no new hardware to buy. Wear an Apple Watch Series 6 or later to bed and Reps has what it needs the next morning — last night's sleep, turned into an energy budget and folded into your Readiness Score alongside HRV and training load. The budget frames the effort; readiness frames the recovery. Together they answer the only question that matters at 7 a.m.: how hard should I go today? Reps is free to try, then a subscription, and Rex — the AI coach, running on-device where your iPhone supports it — can walk you through a rough night in plain language, drawn entirely from your own numbers.
Reps is a wellness and fitness tool, not a medical device, and its energy and readiness readings don't diagnose, treat, or replace professional medical advice.
Common questions
How does Reps turn my sleep into an energy budget?
Reps reads last night's sleep from your Apple Watch and builds an honest daily energy budget from it — a read on what your sleep actually gives you today, rather than an optimistic guess. The budget frames how hard to go, and your sleep also feeds the daily Readiness Score alongside HRV and training load.
What if Reps doesn't have real sleep data?
It says so. If Reps doesn't have real sleep data to work from, it tells you rather than guessing optimistically. Honesty is the point — you get a number you can trust, or an honest gap, never a made-up figure.
What do I need to use it?
An Apple Watch you already own — Series 6 or later — worn overnight so it can record your sleep, plus your iPhone. Reps is free to try, then a subscription.
Can Reps explain a bad night?
Yes. Rex, the AI coach — running on-device where your iPhone supports it — can look at your own sleep and recovery data and explain why last night landed the way it did and what it means for today's energy.
Sleep & energy tracker app
Know what today actually holds.
Turn last night's sleep into an honest energy budget for the day ahead. Free to try.
Free to download • Syncs with Apple Health