© 2025 Ross Hamilton
© 2025 Ross Hamilton
© 2025 Ross Hamilton
TRNR.
TRNR.
Introduction
Introduction
TRNR is a personal passion project of mine I have been working on in spare evenings and weekends. The idea sparked for me during a session with my personal trainer Cory when I realised that he was just using the notes app on his phone to track my workout & fitness progress. As I client I would have loved to see my progress across time as well as being able to track workouts myself when not in a PT session. I was using 5 different apps (My Fitness Pal, Strong etc) to track my progress, all of which Cory had no access to. I had an in-depth chat with Cory about what he would love in a dream app he could use to run his own coaching business and that clients could also have access to. I got to work straight away building what has become TRNR. The one stop shop for personal trainers to run their entire business. From automated invoicing and accounts to tracking workouts, client nutrition and selling services online to expand beyond face-to-face clients and make money as they sleep.
Year
Late 2022 -> Present
Industry
Fitness & Personal Training
Scope of work
/
Solo Project (Design -> Deployment)
/
Full Stack
/
Back End Dev
/
Front End Dev
/
UI / UX Design
/
Web design
Timeline
3 Years
Introduction
TRNR is a personal passion project of mine I have been working on in spare evenings and weekends. The idea sparked for me during a session with my personal trainer Cory when I realised that he was just using the notes app on his phone to track my workout & fitness progress. As I client I would have loved to see my progress across time as well as being able to track workouts myself when not in a PT session. I was using 5 different apps (My Fitness Pal, Strong etc) to track my progress, all of which Cory had no access to. I had an in-depth chat with Cory about what he would love in a dream app he could use to run his own coaching business and that clients could also have access to. I got to work straight away building what has become TRNR. The one stop shop for personal trainers to run their entire business. From automated invoicing and accounts to tracking workouts, client nutrition and selling services online to expand beyond face-to-face clients and make money as they sleep.
Year
Late 2022 -> Present
Industry
Fitness & Personal Training
Scope of work
/
Solo Project (Design -> Deployment)
/
Full Stack
/
Back End Dev
/
Front End Dev
/
UI / UX Design
/
Web design
Timeline
3 Years
Projects Key Feature Set
Projects Key Feature Set
Projects Key Feature Set
Features.
Feature
(001)
Personal trainer & client app in one
Personal trainer & client app in one
(002)
Best workout tracker on the market
Best workout tracker on the market
(003)
Group workouts, intervals / circuits, workout templates, custom exercises & videos
Group workouts, intervals / circuits, workout templates, custom exercises & videos
(004)
Food & meal tracker. Simply speak to log calories & meals
Food & meal tracker. Simply speak to log calories & meals
(005)
Automated invoice generation from client bookings
Automated invoice generation from client bookings
(006)
Create coaching programs/products/services and sell them online in minutes
Create coaching programs/products/services and sell them online in minutes
(007)
Drag & drop sales page builder. Add your own branding & sell your products
Drag & drop sales page builder. Add your own branding & sell your products
(008)
Automations. Automate client check-ins, private messages
Automations. Automate client check-ins, private messages
(009)
An endless list of other amazing features!
An endless list of other amazing features!
Feature Highlight Demos
A quick look at the live app running on my iPhone 15.
Videos highlighting key features of my TRNR app.
Videos highlighting key features of my TRNR app.
This is a personal passion project of my launching later this year (Summer 2025)
This is a personal passion project of my launching later this year (Summer 2025)
App Overview
Watch the app running on my iPhone 15. Highlighting its key functionality & what sets it apart.
Industry Beating Workout Tracking
Watch how I used Open AI & gtp-4o to create an interactive speech to text macro tracker.
AI Enhanced Calorie Tracking
Watch how I used Open AI & gtp-4o to create an interactive speech to text macro tracker.
Sell online in minutes
See how I built a seamlessly way for trainers to sell their services globally. Including a drag & drop webpage builder.
Challenges
Challenges
During the projects initial design I conducted some market research online and by interviewing other personal trainers. I soon realised the app concept already existed and had businesses that were thriving financially. This proved the market demand and excited me more. Analysing compeditors I relaised there was a plethora of options but the quality of the software from a UI/UX point of view was severely lacking.
Interestingly fitness apps targeted at consumers had all of the thoughtfulness and care poured into their design but apps targeting the B2B side of the market like mine were built at best, like functional tools. A trend I have seen through-out my career. This combined with utilising AI in a way that had real impact in saving PT's time and money would be my key market diffientiator. The project is now launching this summer (2025) after nearly 3 years in development. It's been the largest product I've ever developed. One trend in the developer community that doesn't apply here is the idea of just 'get a version 1 out' and fix it later. I knew that PT's were going to use my software for every aspect of their business from invoicing to day to day interractions wit clients that it had to not only work from day one but work flawlessly and match or exceed compeditors that have 60+ staff. What motivates me pre-launch is that in the beta testing phase I have had incredible feedback from trainers who use compeditors. Compeditors with huge overheads, that are slow to move and require thousands of trainers to break even. My target is to hit 350 trainers initially at £50/mth recurring. At a 4.5x multiple that would value the business just shy of £1,000,000.
Interestingly fitness apps targeted at consumers had all of the thoughtfulness and care poured into their design but apps targeting the B2B side of the market like mine were built at best, like functional tools. A trend I have seen through-out my career. This combined with utilising AI in a way that had real impact in saving PT's time and money would be my key market diffientiator. The project is now launching this summer (2025) after nearly 3 years in development. It's been the largest product I've ever developed. One trend in the developer community that doesn't apply here is the idea of just 'get a version 1 out' and fix it later. I knew that PT's were going to use my software for every aspect of their business from invoicing to day to day interractions wit clients that it had to not only work from day one but work flawlessly and match or exceed compeditors that have 60+ staff. What motivates me pre-launch is that in the beta testing phase I have had incredible feedback from trainers who use compeditors. Compeditors with huge overheads, that are slow to move and require thousands of trainers to break even. My target is to hit 350 trainers initially at £50/mth recurring. At a 4.5x multiple that would value the business just shy of £1,000,000.
Interestingly fitness apps targeted at consumers had all of the thoughtfulness and care poured into their design but apps targeting the B2B side of the market like mine were built at best, like functional tools. A trend I have seen through-out my career. This combined with utilising AI in a way that had real impact in saving PT's time and money would be my key market diffientiator. The project is now launching this summer (2025) after nearly 3 years in development. It's been the largest product I've ever developed. One trend in the developer community that doesn't apply here is the idea of just 'get a version 1 out' and fix it later. I knew that PT's were going to use my software for every aspect of their business from invoicing to day to day interractions wit clients that it had to not only work from day one but work flawlessly and match or exceed compeditors that have 60+ staff. What motivates me pre-launch is that in the beta testing phase I have had incredible feedback from trainers who use compeditors. Compeditors with huge overheads, that are slow to move and require thousands of trainers to break even. My target is to hit 350 trainers initially at £50/mth recurring. At a 4.5x multiple that would value the business just shy of £1,000,000.
Let’s talk.
Tell me about your project—whether it’s a website, web app, AI tool and anything in between.
Quick response.
If you’re ready to create and collaborate, we’d love to hear from you.
Clear next steps.
After the consultation, we’ll provide you with a detailed plan and timeline.
Founder
Hamilton Design
Ross Hamilton
Let’s talk.
Tell me about your project—whether it’s a website, web app, AI tool and anything in between.
Quick response.
If you’re ready to create and collaborate, we’d love to hear from you.
Clear next steps.
After the consultation, we’ll provide you with a detailed plan and timeline.
Founder
Hamilton Design
Ross Hamilton
Let’s talk.
Tell me about your project—whether it’s a website, web app, AI tool and anything in between.
Quick response.
If you’re ready to create and collaborate, we’d love to hear from you.
Clear next steps.
After the consultation, we’ll provide you with a detailed plan and timeline.
Founder
Hamilton Design
Ross Hamilton