AI Body Builder
Pricing Get the App
Now in early access · iOS & Android

Your AI coach that survives a messy week.

Just tell it your goal — or how you're feeling today — in plain language, and get hyper-personalized workouts and micro-nutrition in 60-session Seasons. Miss a day? The plan bends, not breaks. And your data never leaves your phone.

Start free — 7 daysSee how it works
No credit card for your first week · No ads or trackers · Cancel anytime
Session 14 of 60 · Season 1

Chest & Core

3/5SETS DONE
Barbell Bench Press
4 × 8–10 · 90s rest
Incline Dumbbell Press
3 × 10–12 · 75s rest
Cable Fly
3 × 12–15 · 60s rest
Hanging Leg Raise
3 × 15 · 60s rest
60-session
Seasons, not a rigid calendar
<5s
First workout generated
0
Ads, analytics &amp; trackers
$9.99/mo
or $59.99/yr — cancel anytime
What you get

Everything a trainer does, minus the $150/hour.

Six systems working together to design, adapt, and keep your training on track.

An AI coach you can talk to

Just describe your goal — or how you're feeling today — in plain language. No long forms. Get a personalized Season: focus areas, exercises, sets, reps, and rest, matched to your goal and equipment.

Daily execution dashboard

Per-exercise checkboxes, built-in rest timers with haptic cues, and a clean read on exactly what to do today.

Forgiving progress engine

Missed a day, a week? Your plan shifts forward instead of shaming you. Sessions, not dates — momentum stays intact.

Deterministic safety layer

Every AI plan passes a rule-based guardrail check for safe calories, protein, volume, and your health-screen flags — before you ever see it.

Private progress photos

Weekly front/side snapshots, compressed on-device and kept on your phone — never uploaded. Watch the change over your Season, on your terms.

Nutrition & reminders

Daily macro targets that flex with training vs. rest days, simple logging, and time-zone-aware reminders at your chosen hour.

The Program Engine

Life happens. Your streak shouldn't pay for it.

Most fitness apps punish the exact days a busy person is most likely to miss. AI Body Builder counts sessions, not calendar dates — so the plan waits for you and picks up right where you left off.

  • Missed one day? Do it today or skip it — the sequence just advances.
  • Missed a few? No shame. Pick up where you left off — zero data lost.
  • Gone a week+? Welcome-back mode eases you in with lighter re-entry sessions.
  • Session streaks & adherence % — forgiving metrics that reward showing up.
  • 1d
    Missed yesterday's Chest & Core
    “Do it today, or skip it?” — one tap, no guilt.
  • 2–6d
    Life got busy
    “Pick up where you left off?” The plan shifts forward.
  • 7d+
    Welcome back
    Ease back in · Resume · or Restart fresh — your call.
Safety by design

The AI coach that won't hand you a dangerous plan.

Generative AI is powerful, but it can hallucinate. So every plan the AI produces runs through a deterministic guardrail layer — pure, auditable rules — before it reaches you. If a value is unsafe, it gets clamped or the block is regenerated.

A brief health screening at onboarding feeds those rules, so plans respect your body from day one.

  • Calorie floors enforced
    Never below safe minimums for your profile.
  • Volume & intensity capped
    No impossible loads, no stacked heavy days.
  • Health-screen aware
    Flagged joint, cardiac, or pregnancy concerns filter the plan.
Privacy by design

Your data. On your phone. Full stop.

Most fitness apps are built to harvest you. AI Body Builder is built the opposite way: your profile, plans, logs, progress photos, and coach conversations live on your device — not on our servers. There's nothing for us to leak, mine, or sell.

You sign in only so we can unlock the AI for you — never to sync your data somewhere. Ask the coach anything; your answers stay with you.

  • No ads. No analytics. No trackers. The app ships none of them.
  • Progress photos never leave your phone — saved locally, never uploaded.
  • Sign in only to unlock the AI, not to store your data on a server.
  • Delete the app and it's gone — because it was only ever on your device.
  • Stored on-device
    Your fitness data stays with you, by default.
  • Zero trackers
    No ad SDKs, no analytics, nothing watching you.
  • Nothing to sell
    We can't sell what we never collect.
Continuous coaching

Finish a Season. Start the next chapter.

Around session 50 we help you plan your next Season — transition goals like Hypertrophy → Strength, or run a deload cycle. Your history and photos carry over. No “day 61” cliff, just the next 60 sessions.

Free
$0
First 7 days
  • Full personalized onboarding
  • Days 1–7 workouts & nutrition
  • Rest timers & forgiveness engine
  • No credit card required
Start free
Best value
Annual
$59.99/yr
Save 50% vs. monthly
  • Everything in Free, unlimited
  • Full 60-session Seasons
  • Continuous Season-to-Season coaching
  • Deterministic safety guardrails
  • Private progress photos & shareable cards
  • Private by design — data stays on your phone
Get the App
Monthly
$9.99/mo
Flexible · cancel anytime
  • Everything in Free, unlimited
  • Full 60-session Seasons
  • All guardrails & nutrition
  • No ads, no trackers — data on your phone
  • Switch to annual anytime
Get the App

Prices in USD. Subscriptions are billed through the App Store or Google Play and renew automatically until canceled. Manage or cancel anytime in your store account settings.

Get started

Train smarter this week.

Download AI Body Builder and generate your first personalized session in under five seconds.

Coming soon on theApp Store Coming soon onGoogle Play

Early access is rolling out now. Questions? Contact support.

Questions

Frequently asked

No. AI Body Builder provides general fitness and nutrition information for healthy adults — it is not medical advice, diagnosis, or treatment. Always consult a qualified professional before starting a new exercise or nutrition program, especially if you have a health condition.
Your first 7 days are free with no credit card: full onboarding, a personalized plan, days 1–7 of workouts and nutrition, rest timers, and the forgiveness engine. Continuing a Season past day 7 requires a subscription.
Nothing bad. AI Body Builder counts sessions, not calendar dates, so your plan waits and shifts forward. Miss a week or more and “welcome-back” mode eases you in. Your streak is session-based and forgiving.
Every AI-generated plan passes through a deterministic guardrail layer that enforces safe calorie floors, protein bounds, training-volume caps, and your health-screening answers before it's shown to you. Unsafe values are clamped or regenerated.
$9.99/month or $59.99/year. Subscriptions are billed through the App Store or Google Play and can be canceled anytime from your store account settings — you keep access through the end of the paid period.
Yes. Because your data lives on your phone, deleting the app erases it from that device. To also remove your sign-in account, use Delete Account in the app or our Delete Account page. Deletion is permanent.
AI Body Builder runs on iOS and Android from a single, fast codebase. Sign in with Google, Apple, or email.
On your phone. Your profile, health answers, plans, logs, progress photos, and coach conversations are stored locally on your device — not on our servers. Your progress photos are never uploaded. See our Privacy Policy.
None. AI Body Builder has no ads, no analytics SDKs, and no third-party behavioral trackers, and we never sell your data. The only things that leave your phone are what's needed to sign you in, run the AI, and process your subscription.
Sign-in lets us confirm you're an authorized user before running the AI on your behalf and applying your subscription — not to sync your data. Your fitness data still stays on your device.
Just tell it. You can describe your goal, your equipment, or how you're feeling today in plain language and the AI coach responds with what to do — no long forms required. A short optional profile makes plans even more tailored.

Not medical advice

AI Body Builder provides general fitness and nutrition information for educational purposes and is intended for healthy adults. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Consult a physician before beginning any exercise or nutrition program. Individual results vary; we make no guarantee of specific outcomes.