Pre-launch · Native iOS

Come back stronger,
at your own pace.

Lazarus is a training app for adults returning after injury, surgery, illness, pregnancy, or a long break — sessions that adapt to where you are today.

A welcome email now, then only launch news. No spam, ever.

Click here to view founder's portfolio

After injury After surgery After illness Postpartum After a long break

The mission

Built for the people coming back.

After injury, surgery, illness, pregnancy, or a long time away — the hardest part is starting again. I build tools that meet people exactly where they are and move them forward at their own pace.

How it works

Training that starts where you are.

Meets you where you are

Lazarus adapts to both your starting point and your daily energy and soreness. No session is too much, or too little.

A private buddy circle

Accountability comes from a small, trusted circle of people you choose — never a public feed or a leaderboard.

Gradual by design

Progress you can sustain, with built-in safety gates. Never shame.

One session at a time

Small steps, repeated, become a comeback.

Lazarus turns "I don't know where to start" into a plan you can actually keep — one sustainable session at a time.

The engine

One engine, two axes.

Every session is scaled to both your starting point and how you feel today — so the plan bends to your life, not the other way around.

◆ What adapts

  • Starting tier — set from your experience and time away
  • Daily readiness — energy and soreness (1–7), with a pain override
  • Safety gates — a 12-week postpartum safeguard and restrict-area limits for injuries

◆ An honest note

Lazarus is evidence-informed, not clinically validated. It doesn't treat injuries or replace your clinician — if you're returning after surgery, an injury, or birth, please check in with a professional first.

Join the waitlist ↑

Evidence-informed, professionally reviewed where flagged — not clinical advice. Footage is illustrative.

The founder

About the founder.

Everything below is the work, education, and experience behind this build. The project I'm working on now is Lazarus — the app this page is for.

Luke McGreevy Luke McGreevy — coaching in the gym

About Me

Business sense, behavioral science, and a builder's hands.

I'm Luke McGreevy — a founder and builder based in Pennsylvania. My background is unusually broad on purpose: a degree in Business Administration Management, international business study in the Netherlands, years in applied behavioral science teaching and mentoring others, and front-line healthcare during the height of the pandemic. The throughline is people — understanding how they learn, recover, and change behavior.

Today I channel that into building products. I went deep on AI-assisted development — earning Anthropic's full Academy track and a University of Michigan Python certificate — and used those tools to take Lazarus, a native iOS return-to-training app, from a blank page to a ready-to-build plan: product spec, adaptive safety engine, evidence register, and independent governance.

As an NASM Certified Personal Trainer, I care personally about helping people come back from injury and setbacks — which is exactly the problem Lazarus is built to solve. I work with discipline, document everything, and stay honest about what's evidence-informed versus proven.

+ Product strategy & specs + Native iOS (Swift) + AI fluency · Claude Code · MCP + Evidence-based design + Applied Behavior Analysis + Coaching & mentoring

Experience

Where I've worked.

A decade across behavioral science, healthcare, and operations — every role built around responsibility, data, and people.

2023 — 2025ABA Centers of Pennsylvania

Lead Registered Behavior Technician

Feb 2024 – Dec 2025 · promoted from Registered Behavior Technician (Nov 2023 – Feb 2024)
  • Onboarded and mentored new technicians in the principles of Applied Behavior Analysis, and prepared trainees for the RBT credentialing exam.
  • Triaged learner questions, directed escalations to supervisors, and authored clear, professional communications across multiple channels.
  • Enacted individualized behavior treatment plans, recorded behavior data in real time, and analyzed it against multiple variables for management.
2019 — 2021Penn Medicine · Chester County Hospital

Nursing Assistant & Transporter

Feb 2019 – Feb 2021
  • Provided direct care for up to ten patients across multiple hospital floors, obtaining vital signs and entering patient data to support clinical decisions.
  • Followed CDC protocol and precautions for medical providers through the entire COVID-19 pandemic.
  • Partnered with RNs, charge nurses, and clinicians to escalate concerns and keep growing clinically.
2017 — 2019EffectivEnergy Solutions

Logistics Manager

Jan 2017 – Feb 2019
  • Secured and transported engineering project plans, building diagrams, invoices, equipment, and payments for the founding Professional Mechanical Engineer.
  • Tracked project development through school-district management meetings.
  • Managed the preventative-maintenance schedule for HVAC equipment across a public school district.

Education & Certifications

How I keep sharpening.

Formal degrees, a coding foundation, the full Anthropic AI Academy track, and professional certification.

B.A., Business Administration Management

2011 – 2015
Lycoming College

Four-year degree in business management — strategy, operations, organizational behavior, and finance.

International Business School Programme

2015
Hanzehogeschool University of Applied Sciences · Netherlands

Marketing, market entry, human resource management, and intercultural competencies.

Programming for Everybody — Python

2026
University of Michigan · Coursera

Informatics coding certificate — foundations of programming and data with Python.

NASM Certified Personal Trainer

2026
National Academy of Sports Medicine · NASM-CPT

Accredited personal-training certification (NCCA). Valid through March 2028.

Anthropic AI Academy — Full Track

2026
Seven completed course certificates
AI Fluency: Framework & Foundations AI Capabilities & Limitations Claude 101 Introduction to Claude Cowork Claude Code 101 Claude Code in Action Introduction to Model Context Protocol

Get in touch

Let's build something
worth coming back to.

Whether you're waiting for Lazarus, hiring a builder, or just want to talk product, training, or AI-assisted development — I'd love to hear from you.

✉ mcgreevy_luke25@fastmail.com LinkedIn ↗