Apex
A personal training platform that took a solo coach from 12 to 47 active clients in 60 days. Built in 25 days.
The Challenge
The founder had been running a personal training business with spreadsheets for scheduling, group chats for check-ins and Venmo for payments. Every quote he received for a custom app assumed he was a tech company, not a solo coach. He needed something clean, fast and professional enough that clients would trust it on day one.
The Approach
Scoped the product in three days. Client profiles, session booking with availability management, a workout log, and Stripe for payments. iOS and Android apps alongside a web dashboard for roster management.
Every screen was designed to feel premium, the kind of product a high-end gym would ship. Clean typography, purposeful use of space, and interactions that felt responsive and polished.
The Outcome
The founder sent the link to his existing 12 clients before any marketing. By the end of week two, referrals had brought in 18 more. Sixty days after launch he had 47 active clients and a waitlist.
"My clients actually compliment the app. That never happened with any tool I used before. Nikola's design made them trust the platform immediately. I went from 12 clients to 47 in 60 days, mostly through referrals." Derek M., Founder, Apex