01
Jeshua
Castro
Performance is the future of personalized health & medicine.
02 — THESIS
A healthier future is a more human future.
Every workout is a data point. Right now that data is scattered across ten apps that don't talk to each other, so nobody has the full picture. Performance starts with training because it's the most frequent record of how you actually live. How you train, how you recover, how you respond, all in one system.
03Performance
Training that adapts as you do.
Most fitness tools are fragmented and the plans are static. Performance is one continuous system. Your training, recovery, and habits live in one place, and the plan adjusts as you do.
Built for anyone with the end goal of being healthy.
Train
Strength, running, and more.All in one place.
Explore how it works.Explore the system
04Roadmap
Pick a step — the path transforms.
Where
this is going.
A long-term path to better health. Built step by step.
02 /
Building Performance
I AM HEREThirteen months building Performance from the ground up. I had no prior experience with development. I learned it building this. The full app is built: adaptive training, recovery systems, and the health layer around them (sleep, habits, recovery signals), with the research done behind it. One continuous system instead of fragmented tools and static plans. Built for serious lifters, runners, and hybrid athletes first, the people who train hard enough for the data to mean something. I'm here now, refining the product and getting it into athletes' hands.
Explore the roadmap
05About
Shipping since
I was 12.
01 /Creative path
I have always been a creative person, and that has led me down many avenues as well as entrepreneurial ones. I tried the basic dropshipping, then building brands as well as making creatives for them. I didn't find my true passion though until I found software development, which I found when I got out of high school.
02 /Fitness
I'm obsessed with fitness. Since I was 12 I've been going to the gym, studying fitness and understanding my body and how I can improve it over and over. Fitness taught me that if you have a drive and passion you can make effort into real driven results, which I've carried into the app.
03 /Purpose
I never felt like I understood how I could make a difference in the world though I always had the passion. Developing and building have filled that hole for me and I have a true purpose now.