What Lift Day is

For a coach

• Programme the week. Build workout days as ordered lists of exercises, assign them to the whole squad or to groups, and add cardio with an optional target — "run two miles", or just "go for a run".
• Groups that match how you coach. Linemen and skill players, varsity and JV, returning-from-injury — an athlete can be in more than one, and a day can be assigned to any of them.
• See the week honestly. A report of who logged what, which sets were filled in afterwards rather than at the time, and who has logged nothing at all.
• Baseline testing. Vertical jump, sprints, broad jump — the measurements you take a few times a season. Pick your sport and you start with a sensible battery you can edit.

For a personal trainer

A trainer's client list works the same way a team does. Your clients are your team; your groups are whatever you organise around — fat loss, strength, a six-week block, or tiers of ability. Clients see their own training and their own progress and nothing about each other, which is the behaviour you want and the behaviour you get: only the coach can see the roster.

The vocabulary throughout still says "team" and "coach", because that is where this started. Everything underneath works for a client list without change.

For an athlete

• Log from the floor. Your day's exercises are already there; you tap in weight and reps between sets. Last week's numbers show next to each lift so you know what to beat.
• Your progress, not a leaderboard. Estimated max over time, personal bests, and a chart per lift. Nobody else on the team sees your log — only your coach.
• Cardio without typing. Connect your phone once and runs, walks and rides land in your log by themselves.

How phone sync works

On Android, the Lift Day app reads Health Connect — the phone's own health store, which Samsung Health, Fitbit, Garmin Connect and Strava write into — and syncs about hourly, and whenever you open it. On iPhone, the Lift Day app reads Apple Health the same way, and iOS wakes it when a new workout is saved there. Both apps are in testing: the iPhone app through Apple's TestFlight.

Lift Day reads workouts, heart rate, distance and calories burned, and nothing else. It never writes to your health data. Whichever app recorded the workout, it arrives the same way.

With an AI assistant

Claude, ChatGPT, Gemini and Grok can be connected to Lift Day, on a free account, so you can tell one what you lifted or ask it how much cardio you did last week. Each signs in and asks you what it may do, and none of them can read anyone else's training. The steps for each are public.

What it costs, and what happens to your data

Nothing, and nothing. There are no accounts to upgrade, no adverts and no analytics. The privacy page lists exactly what is stored and who can see it; the short version is that a coach sees their own team, an athlete sees themselves, and no one else sees anything.

Getting started

A coach signs in and creates a team, then sends athletes an invite link. An athlete opens the link, signs in, and is on the team. There is nothing to install for lifting; the phone app is only for cardio, and only on Android so far.