Your Foundation
What's underneath makes everything possible.
AI-powered training that reads your body and builds your program — one week at a time.
Why Base Layer
Coaching that reads your body
Most training apps give you a static plan and hope for the best. Real coaching adapts to how you're actually recovering — your sleep, your heart rate variability, your training load.
Base Layer reads that data and adjusts every week, like having a coach who's always watching your numbers.
Generic programs don't know you slept four hours. They don't know your HRV dropped. They don't know you crushed a long ride yesterday and need to back off today. Base Layer does.
Daily Readiness
Know before you go
Every morning, Base Layer reads your biometrics — HRV, resting heart rate, sleep, training load — and tells you how ready your body is to perform. Not a guess. A score built from what your body is actually telling you.
Adaptive Plans
Every week, built for this week
Tell it what you're training for. A ski season. A first 5K. Keeping up with your kids at the park. Base Layer builds a weekly program around your goals, your constraints, and your recovery — then rebuilds it next week based on what actually happened.
Sessions adapt
Based on your readiness score
Rationale included
Why this workout today
Your constraints
Bad knee? No deep squats.
All modalities
Strength, cardio, mobility, flow
Guided Workouts
Not just a plan — a guided experience
Step-by-step sessions with rest timers, heart rate monitoring, and clear form cues. Strength, cardio, mobility, hybrid flows — every session has a structure and a reason.
AI Coach
Your AI training coach
Ask your coach anything. Why your readiness dropped. Whether you should push through or take a rest day. How to modify a workout around a sore shoulder. The coach knows your data, your history, and your goals — and gives answers that are actually about you.
Capability Tracking
Track what actually matters
Four scores built from real workout data — not just whether you showed up, but what you did and how your body responded.
Privacy by Design
Your data, your control
Your training data stays on your device. When the AI coach needs context, it works from health summaries — never raw data, never personal identifiers. Nothing is stored on external servers. You're in control, always.
On-device data
Health data stays in Apple HealthKit
Stateless AI
No server-side storage of your data
No accounts required
Core features work without sign-up
No ads, no tracking
No data selling, no third-party analytics
Ecosystem
Works with what you already use
Base Layer reads from Apple Health, so anything that writes to HealthKit works automatically. No extra setup — just connect and go.
Pricing
Train smarter, not just harder
Start free and upgrade when you're ready. Every new user gets a 10-day trial of the full Pro experience.
Free
$0
Free forever
- Daily readiness scoring
- Limited AI coaching
- Basic workout generation
- Apple Health sync
Pro
$4.99
per month
- Unlimited AI coaching
- Deep analysis with tools
- Full workout generation
- Capability tracking
- Priority features
Get Started
Build Your Foundation
Set your goals. Connect your data. Let your AI coach handle the rest.
Download on the App Store