Stop following plans
made for everyone.
Get one made for you.
Your body changes every day. Your plan should too. BioTrac adapts to your progress, fatigue, and goals in real time.
A plan that adjusts every set
Most apps hand you a fixed program and call it personalized. BioTrac doesn't. Exercises, sets, reps, and target RPE are all shaped by what you did last session and how it felt. Your dashboard puts today's workout, coaching feedback, and the full plan in one place.
The intelligence of a trainer who knows your history, without the $100/hour bill.
Execute, don't deliberate
Walk in, open the app, and go. BioTrac tells you exactly what weight to load and how many reps to hit. Log each set with a single tap so you stay locked in on the lift, not the phone.
On the fly
Tweaked a shoulder? Training from home this week? Tell BioTrac in plain language and it restructures your program.
A debrief, not just a log
BioTrac writes a detailed summary after each session. What went well, what needs attention, how your training is trending. Personalized feedback on RPE accuracy, exercise swaps, and weight adjustments.
Your top set on Romanian deadlift came in at RPE 7 with clean bar speed. Next session: add 10 lb and hold the rep target.
RPE accuracy has been trending up for three weeks. The engine is progressively loading you faster as a result.
Learn how responsive training works
Adaptive Fitness Technology for Enterprise Fitness Programs
A practical guide to evaluating adaptive workout technology for workplace wellness, fitness facilities, and larger member programs.
TechnologyHow Adaptive Workout Modification Works
A plain-English technical guide to feedback loops, RPE, workout changes, and the difference between adaptive and static personalization.
AccessibilityAdaptive Fitness for Accessibility
How adaptive workout systems can support more inclusive exercise experiences without replacing medical or professional guidance.
What people are saying
Best App
This app has revolutionized my fitness journey. I am able to have a dynamic approach to my training. I can change at my own pace and it works with me not against me.
User Friendly
Very easy app to use for someone who is new to fitness.
BioTrac
I like how BioTrac is not invasive, but guides you through a routine.
Best fitness app I've used by far
The interface of the app is so easy to use and everything feels so responsive, I highly recommend BioTrac to anyone trying to live a healthier lifestyle.
Invest in Your Progress
Start with a 14-day free trial. Cancel anytime.
A single session with a trainer costs $75 to $150. BioTrac gives you that same expertise on every workout, for less than a protein bar a day.
Month
Billed monthly
- Full Adaptive Engine
- Real-time workout adjustments
- Personalized progression
- Two week free trial
Annual
Billed annually
- All monthly features
- Yearly discount
Billed through the App Store. Subscriptions renew automatically. Cancel anytime from your Apple ID settings. Alternative billing available through a web checkout.
Frequently asked
What is BioTrac?
BioTrac is a fitness app that builds personalized workout plans and adjusts them as you train. It tracks your sets, reps, weights, and RPE, then uses that data to fine-tune future sessions automatically. BioTrac is available on iOS.
How does BioTrac adapt workouts?
BioTrac analyzes your performance on every set. Exercises, sets, reps, target weight, and target RPE are shaped by where you are right now. If a set feels easier than expected, future work may progress. If you struggle, the plan can pull back to keep training productive.
Can I modify my workout plan in BioTrac?
Yes. You can tell BioTrac what to change in plain language, including more rest days, a new training focus, injury concerns, equipment limits, or schedule changes, and the app restructures your program around it.
How much does BioTrac cost?
BioTrac offers a monthly plan at $9.99 per month and an annual plan at $99.99 per year. Both plans include a 14-day free trial and can be canceled anytime through the App Store.
Health Disclaimer
BioTrac provides general fitness information for educational purposes only. Consult a qualified healthcare professional before beginning any fitness program. Stop any exercise that causes pain or discomfort. You assume all risks associated with physical activity.