A coach with your numbers.

Most AI fitness "coaches" are tip generators. The PlateStack Coach reads your profile, diet, streak, level, and recent training every time you ask — so the answer is about you, not the average user.

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9:41

Coach

Should I bump my bench this week?

Last 3 sessions: 185×8, 185×8, 190×7. You're close to a breakthrough. Try 190×8 this week. Hit all 8 with clean form → 195 next session. Weekly volume is up 12%, which is ideal progression.

Ask anything…

What the Coach sees

The same picture you'd give a real coach.

Every prompt ships your context with it. There's no version of the Coach that doesn't know who you are or what you've been doing.

Profile

Age, height, weight, training experience, your goal: cut, recomp, bulk, or maintenance.

Diet preference

Standard, keto, low-carb, high-protein, vegan, or paleo — plus your custom macro targets.

Current streak

How long you've been logging. Yes, it factors in.

Level + XP curve

Where you are in the game system. The Coach doesn't give Level-30 advice to a Level-3 lifter.

Recent training

Your last few sessions and their PRs — overload guidance is grounded here.

Recent nutrition

Calories in, protein hit, hydration logs — so the Coach knows whether you're actually fueling.

What you can ask

Real questions. Real answers.

"Should I bump my bench this week?"

"What's a 40g protein meal I can make in ten minutes?"

"I'm sore. Push, or skip?"

"Plan me 7 days of meals at my macros."

"Why did my deadlift stall?"

Coach

Streaming · powered by Claude

Should I bump my bench this week?

Last 3 sessions: 185×8, 185×8, 190×7. You're close to a real breakthrough. Try 190×8 this week. If you hit all 8 with clean form, jump to 195 next session. Weekly volume is up 12%, which is in the typical progression band.

What should I eat post-workout?

You have 62g of protein left and ~600 kcal of room. A 6oz chicken thigh + 1 cup rice + Greek yogurt hits about 45g protein, 580 kcal. Want me to log it?

7-day meal plan

One tap. A week of meals at your macros.

The Coach generates a 7-day meal plan tailored to your calorie target and macro split. Edit any meal, swap any day, save the plan to your library.

Built around your calorie + macro targets
Respects your diet preset (keto, vegan, etc.)
Editable — swap a meal, regenerate a day
Saved to your recipe library when you like one

Week of Apr 28

Generated

Mon Oats + whey, chicken bowl, salmon + rice 2,108
Tue Egg scramble, turkey wrap, beef stir-fry 2,094
Wed Greek yogurt parfait, tuna salad, chicken pasta 2,121
Thu Cottage cheese + berries, protein shake, salmon poke 2,103
Fri Protein pancakes, chicken Caesar, lean burgers 2,086
Sat Steak + eggs, chicken bowl, sushi 2,162
Sun Smoothie bowl, leftovers, sheet-pan dinner 2,071

Privacy

What happens to your messages.

Coach messages are sent to Anthropic's Claude API along with the context summary above. Anthropic processes the request and returns the response — they don't train on your data per their commercial terms.

Photos used for AI food scanning are sent to OpenAI's vision API for the same reason: to get a structured nutrition estimate back. The image isn't stored on our servers; only the resulting log entry is.

Your account data lives in Supabase (PostgreSQL on AWS in the United States) protected by row-level security. Read the full privacy policy for the long form.

Stop guessing the next set.

AI Coach chat is included in Full Premium ($9.99/mo) and the Lifetime tier.

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