In development. Beta for iPhone, early 2027.
WorkBeasts works out how much to eat around your training. It won't set a daily target too low, and it shows you how it got your target.
Who's building it
I've finished two Ironmans. My next full distance is in May 2027. The 23-week build starts on December 7.
I'm building WorkBeasts because I wanted it for my own training. I'll use it every week of that build: the long rides, the bad weeks, the taper.
Beta testers get it first. What they tell me shapes what it becomes.
Willis, founder
Sound familiar?
Tap any that apply. Nothing you tap is saved or sent.
When training goes up and eating doesn't, your body runs short. Sessions feel heavier and recovery takes longer. The long day falls apart in the last hour. Most athletes blame their legs.
WorkBeasts starts from your training, not from a weight goal. On a big week, your target goes up.
How it works
At launch, training comes in from Apple Health or a .FIT file.
Every session from Apple Health or a .FIT file: what you did, for how long, and how hard.
Resting energy, daily movement and each session, added up for the day. A big day gets a bigger target.
Search, scan a barcode, pick a saved food or type the numbers in. Nothing counts until you confirm it.
Your target follows your weight trend over weeks, not a single weigh-in. If too many days are only partly logged, it holds your target instead of guessing.
When the data is thin
The screens on this page are design previews of the app in development.
What's different
Tap any target and it opens to the sum behind it: resting energy, movement, each session, the goal adjustment, and every guardrail it applied, in plain words.
What it says when it can't tell“We're holding your target — there aren't enough fully logged days in the last two weeks to tell what changed.”
It won't hand you a number that leaves you under-fueled for Saturday. Deficits shrink on hard days. Rest days have a floor it won't go under. If your goal asks for more, it says no and tells you why.
What it says when it stops“Your trend suggested a bigger change. WorkBeasts applied it only as far as your rest-day floor.”
Over and under target are shown the same way — no red, no green.
Example screens
Who it's for
Whatever you train for, your fueling should follow your training, not a fixed diet plan. WorkBeasts reads your sessions and your weight trend and turns them into a daily target that keeps up.
Feed the beast.
Build status
Questions
An iPhone. Training comes in from Apple Health, or from a .FIT file exported from your watch or bike computer. If your training plan is in Apple Calendar, it can read your planned sessions from there, and you confirm each one. With nothing connected, your target comes from your profile and goal.
The more complete your days, the better it gets. If logging is patchy, it holds your target rather than guessing from half the picture. It tells you when it's doing that.
No. It's built to fuel training. You can set a goal to lose, hold or gain weight, but it caps how fast your weight can change. It won't set a target too low to train on.
Pricing isn't set yet. People on the beta list will hear first.
The beta opens in early 2027, on iPhone, for adults 18 and over in the US.
This site only collects the email you give us for the beta list. The app's privacy policy will be published before the beta opens.
No. WorkBeasts offers fueling guidance and education. It isn't a substitute for a doctor or registered dietitian.
Join the beta list for the iPhone app. Early 2027, US only.