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Your Personal Digital Workout Partner

Meet Astro.

A digital workout partner built for how you actually live. Whether you train at home, in a commercial gym, or outdoors, Astro crafts your custom split, adapts to fatigue & pain on the fly, and responds live to your consistency.

Home WorkoutsCommercial GymsDumbbells OnlyBodyweightOutdoor Running
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7-Day Free Trial Included · No Card Required
Live Interaction SimulatorTap a moment:
Milestone & Personal Best
Astro Live Voice

“TEN DAYS. Double digits! I'm literally on fire (I mean, I always am, but still).”

Astro reacting to 10-Day Streak
Built-in Intelligence

What your digital partner does

A full-spectrum training companion integrated into your daily flow. Free foundational workout tools for everyone, with Pro intelligence for real-time adaptations.

Pro

Real-time workout adaptations

Joint flare-up or squat rack taken at 6 PM? Astro instantly swaps movements on the fly and recalculates volume around your real constraint.

Interactive ScenarioTap to test:
✕
Barbell Flat Bench Press
4 Sets × 8 Reps · Heavy Load
Unavailable
Incline Neutral DB Press
4 Sets × 10 Reps · Joint-Safe Plane
Adapted
Biomechanical Rationale: Eliminates anterior capsule shear while preserving 100% chest volume.
Pro

Say it once — he remembers

Tell Astro your equipment limitations or injury constraints once. Every future workout suggestion permanently respects it without repetitive setup forms.

Interactive MemorySelect constraint:
“I only have a pair of 10kg dumbbells in my living room.”
Astro Avatar
Permanent Training Memory Locked
Stored in memory. Converted all upcoming workouts to high-density dumbbell protocols with progressive time-under-tension.
Free · 100% Free

Goal-based 6-week plan builder

Tell Astro your target goal, available days, and experience level. He designs the full periodized training cycle tailored directly to you — 100% free.

Structured Block TimelineTap to inspect:
Phase 2 · BuildRPE 8-8.5 · Peak Muscle Stress
Progressive mechanical tension & targeted muscle hypertrophy
Upper / Lower Antagonistic Split (4x / week)4 Sets × 8-10 Reps · +2.5kg Target Overload
Free · 100% Free

Daily insights & streak guardian

Receive a personalized morning briefing grounded in your actual training data, post-workout recovery recaps, and proactive streak protection.

12-Day Streak Active
Guardian Online
Astro Streak
7:00 AM Morning Briefing

“Legs are 94% recovered from Tuesday. Push workout scheduled for 6:30 PM.”

Recovery94% Optimal
TargetUpper Body A

Experience the full power of FitAstra Pro

Every new FitAstra account includes 7 days of Pro. Unlock real-time workout adaptations, chat grounded in your training history, and plans that rebuild around a week you missed.

Explore FitAstra Pro
Hardcoded Safety Architecture

What your digital partner won't do

Trust is the foundational feature. These strict boundaries are hardcoded into Astro's architecture:

Never touches your coach's plan

If a FitAstra verified human coach assigned your regimen, Astro explains, reminds, and motivates — he never modifies or second-guesses it. Coach authority is 100% sacred.

Guardrail:Coach Authority Protected

Drops the act when pain happens

Mention pain, sharp flare-ups, or medical concerns, and banter shuts off immediately. Astro gives safe general guidance and directs you to a certified medical professional.

Guardrail:Medical Safety Guardrail

Zero hallucinated stats or fake praise

If your logged workout data doesn't show it, Astro doesn't claim it. Zero fabricated PRs or hollow flattery without verifiable proof in your training logs.

Guardrail:Strict Data Grounding

Clear Answers

Frequently asked questions

iOS
Android
Astro celebrating

Your fitness community is waiting.

Find partners, book coaches, and train with Astro — free to start, right from your phone. Partners and events stay free; Astro's chat and plan changes are FitAstra Pro.

Download on the App StoreGet it on Google Play

Free to download · No credit card required