The AI fitness coach
built to listen.
Zenith is the AI personal trainer for iPhone. AI-generated workouts, macro-aware nutrition, AI physique scans, and a plan that adapts when life happens.
iPhone · iOS 17 +
What your AI coach actually does
Six surfaces.
One coherent coach.
Programming
An AI coach that periodises your training
Zenith generates a complete weekly split tuned to your level, schedule, and equipment — full body, upper/lower, push/pull, or PPL. Progressive overload is baked in from day one.
Nutrition
Macro targets your AI coach actually defends
TDEE-based calories, protein/carb/fat targets that match your goal, a generated 7-day meal plan, and photo-based meal logging with AI estimates.
Voice check-ins
Talk to your coach like it's a real one
Speak a check-in. Zenith transcribes it live, updates your plan, and shows you exactly what changed. Miss a session, eat light, feel beat — the engine listens.
Physique Rating
AI physique scans to see what's actually changing
Snap a photo. Get scored on composition, muscle development, symmetry, definition, and proportion — with a shareable summary card you can save week-to-week.
Progress
Strength trends, weight curves, streak history
Every set, every meal, every check-in feeds an honest view of your trajectory. Goal projection tells you when you'll hit your target — not just where you are.
Transparent AI
Read the AI Context. Edit anything
Your AI coach has memory — and it's not hidden. Read the structured summary of what Zenith believes about you. Correct anything. Every automatic change is logged.
Why an AI coach
A real coach adapts to you.
So does Zenith.
A great human coach holds a model of you in their head — your history, your tendencies, what you said last Tuesday, why this week looks different. Most fitness apps don't. They hand you a static plan and walk away.
Zenith holds the model. It carries your training history, your last few check-ins, your equipment, your sticking points. Every plan it generates and every change it makes is conditioned on that context — and you can read it, edit it, or speak to it directly.
That's the difference between an AI workout app and an AI fitness coach. Zenith is the second one.
AI Coach vs Static App
Stop calling it AI
when it's a template.
Generic AI chatbot that forgets you every session
Zenith maintains a persistent AI Context that grows with your training history
App promises 'AI' but ships static template plans
Plans are generated fresh from your profile, equipment, and history
Trainer app and food tracker live in separate worlds
Zenith's AI coach co-adapts training and nutrition as one system
Black-box recommendations with no way to correct mistakes
Readable AI Context, editable directly — by typing or by voice
Adaptive engine
Three feedback loops.
One adaptive plan.
Session ratings
Too easy, just right, too hard
Rate every session in one tap. Patterns feed back into volume and intensity decisions.
Voice check-ins
Tell Zenith what changed
Speak a sentence — travel, soreness, missed sleep — and the engine recalibrates around it.
Regenerate week
Rebalance toward your goal
Lost equipment, changed schedule, shifted goal? Regenerate redistributes — without resetting your trajectory.
Get your AI coach
Your AI fitness coach
is one tap away.
Zenith is free to download on the App Store. iPhone, iOS 17+.
Download on App Store