Reps runs on Apple TV. Same log, same iCloud data, on whatever screen is in front of you. If you train in a garage or a living room, that is the biggest screen you own and the only one you never have to pick up with chalky hands.
I want to be precise about why that helps, because "now on Apple TV" is a bullet point and not a reason.
What a phone is bad at, mid-set
A phone in a home gym has three problems. It sits on the floor, so between sets you bend down to a device instead of resting. It sleeps, so you wake it and re-find your place. And it is a single-person object: nobody training with you can see what is next without leaning into your screen.
A TV has none of those problems, for the simple reason that it is far away and always on. You look up, not down.
What the screen actually shows
The design constraint on a TV is unusual. Everything must be legible from ten feet, and the only input is a remote. That killed my first attempt.
I built the set list as a compact grid of tally marks, the way a paper log looks. It failed for a reason that seems obvious afterward: it assumed every set is the same. Real sets are not. You might get six reps instead of eight, and the weight might change between them. A tally records that a set happened. A log has to record what happened.
So the shipping design is one full-width row per set, stacked vertically, each row carrying its own weight and reps. It scrolls. On a TV that turns out to be fine, because scrolling costs one press on a remote you are already holding.
Each row has two targets. The circle on the left checks the set off. The body on the right opens an editor for that set, so you can record 262.5 lb when the plan said 260 and you added a change plate.
The rest timer is the part that earns the TV
Check off a set and a countdown appears in the top bar: three minutes after a compound lift, ninety seconds after isolation work. It carries a +30 button and a dismiss button, the same two controls as the iPhone version.
On a phone, a rest timer is a thing you look at. On a TV it is ambient. It is already in your field of view, at a size you can read from the floor, while you lie on a bench doing nothing. That is the one place where a ten-foot screen is strictly better than a four-inch one, and it happens to be the state a lifter spends most of a session in.
The countdown is deadline-based rather than tick-based, so it survives the app being backgrounded and comes back showing the right number instead of however many ticks it missed.
What a TV is worse at
Text. Anything needing a keyboard is miserable on a remote. Naming a custom exercise on the TV is a chore, and I would do it on the phone.
Being with you. The TV knows nothing about the gym you drove to. The phone and the watch are the portable log. The TV is the home one.
Health data, and not only because of the platform. Apple TV has no HealthKit at all, so heart rate and body metrics live on the iPhone side. They also do not travel: Reps keeps every Health measurement it reads in a separate on-device store that is deliberately excluded from iCloud sync, because App Store rules forbid putting personal health information there and because it is the right call anyway. Your workout log syncs to the TV. Your heart rate never leaves the phone that measured it.
If a workout tracker claims it reads your health data on an Apple TV, it is claiming something the platform cannot do.
Who this is actually for
If you train at a commercial gym, this changes nothing and you should ignore it. If you have a rack in a garage, a bench in a spare room, or a set of dumbbells in front of a television, the TV is the screen you already look at and the one your hands never have to touch.
One download covers iPhone, iPad, Mac, Apple Watch, and Apple TV, and the log lives in your own iCloud private database on all five. The progression math is identical everywhere, and it is written out on how Reps decides your next set.
