WorkoutOS

For years, I was just going by default to the gym. I would not track my workouts or I would just use a messy spreadsheet every once in a while, but I never really knew if I was making progress and constantly forgot how I was performing. Sound familiar?

That's why I built WorkoutOS, a fitness app designed to provide powerful data analytics for your workouts, combined with a social element to keep you motivated.

The Problem with Most Fitness Apps

I tried some workout trackers and read about dozend, but they all fell short in one of two ways:

1. They were too simple: Basic logging of sets and reps, but no real analysis. I couldn't easily see my volume progression over time, my estimated one-rep max for different exercises, or how my frequency was impacting my gains.

2. They were isolating and boring: Fitness is often a solo journey, but it doesn't have to be. I wanted to see what my friends were doing, get a little competitive, and share in the progress, but most apps felt like a lonely data-entry tool.

Introducing WorkoutOS: Your Workout's Operating System

I was looking for some challenges so I decided to build the solution I wanted. WorkoutOS is more than just a workout logger; it's a platform to understand your training and connect with others.

Here’s what makes WorkoutOS different:

• Advanced Data Analytics: beyond simple charts. WorkoutOS visualizes progress with detailed analytics on volume, intensity, personal records, and consistency. Everyone can finally see the impact of hard work and make informed decisions about training.

• Social Motivation, Done Right: it is possible to follow friends or other athletes on the platform (as long as they opt in for the public profile, privacy always first). The feed gives you a summary of their completed workouts, so you can see how they're training, give them props, and get inspired. It’s about community and friendly competition, not just sharing sweaty selfies.

• A Focus on Simplicity and Power: The interface is designed to be clean and intuitive, so it is possible log workouts quickly and get back to lifting (the templates feature is something I am quite proud of). But under the hood, the analytics code is crunching the numbers to give you actionable insights.

The Indie Hacker Journey

Building WorkoutOS has been my first (!) solo-developer project. It started as a personal project to scratch my own itch and has slowly evolved into a product I'm proud to share. I've been bootstrapping this from the start, focusing on building a solid product that genuinely helps people reach their fitness goals. That's why it has a free tier with almost all features. The goal is that people can use it regardless of their economic situation.

I'd Love Your Feedback!

I keep using WorkoutOS and would love for the Indie Hackers community to check it out. I'm looking for feedback on the features, the user experience, and any ideas you have for making it better.

This is more than just another fitness app; it's a tool for anyone who wants to take their training more seriously and have fun doing it.

Thanks for reading! Let me know what you think.

Building products is fun! Everything starts with an abstract idea that grows into a direction that normally would not be expected, with many problems and tweaks along the way. In this process, it is important not to get lost in the coding and to remember the original problem that sparked the project.

Do not forget to look back and check if you are still on track!

This is what happened to me with WorkoutOS. I struggled to remember my training and progress, so I decided to build a web app that helped with that. During this process, I was enjoying myself too much programming and started adding features that were a bit too far from the main objective: Workout tracking and analytics! I just wanted to know what I did in the past and see different stats to evaluate my progress. Nothing less, nothing more!

When I realize this, I stopped the development, cleaned what was too superficial, and focus on shipping. This mindset change put me incredibly close to a final product and shorten the launch time. After all, I already had the problem I needed in first place.

I have read in different pages like reddit or X that freemium models do not tend to convert well. I thought quite a lot about this when I was building WorkoutOS and started setting up the Stripe product. After some time, I decided to go for a freemium model anyway. While it might be true that this kind of business model struggles to get good conversions, I also thought about the joy of building this app and the benefits it can bring to people.

Throughout this journey I have enjoyed learning more about programming, creating a platform that generates strong analytics and powerful visuals that I enjoy daily. This, by itself, is a great reward, even without paying customers.

Some weeks later, after have been using it regularly, I have seen that it has helped me to stay motivated and exercise better where I was not feeling it (the workout streak is an awesome metric for this). And I thought "Wow, this could help many to reengage with working out and getting healthier". This reinforced the idea that freemium might be the right choice, even if it does not bring direct payments.

Building apps and having startups is not just about getting paid, it is also about helping others. If I get some money back on the way, awesome! If people just use it, enjoy it, and become healthier without me getting anything back, that's cool too! I have already got the reward of learning and enjoy every week myself!

I built this app as a way to combine two of my passions programming and fitness. I have always done a lot of exercise, either with sports, going for a run, or hitting the gym. Sadly, as I grow older, it becomes more difficult to remember how my shape was at a certain point or what my peak looked like. This is a bit frustrating.

I have considered many times to use an app to track and monitor my training, but never found one that really clicked. I did not want to invest too much time recording workouts that I had already finished, and the idea of writing it down or having a spreadsheet made it feel like homework rather than something fun and motivating.

Throughout my career I had programmed tons of code for scientific programming, but had barely invested enough time in web development. So I decided to start a new side project that allowed me expanding my horizons while working on something I am passionate about, fitness and numbers.

This little learning project kept evolving and I started using it more and more. Eventually, I realized that some of the features were not only interesting from a statistical point of view but they were also motivating me to workout more and with higher frequency, challenging my past-self.

This moment made me realize that the app could be useful for many that are really into tracking their training, but also for those that need an extra push to be more systematic with their workouts. So I decided to make the app more professional and open it to the world.

And that's how WorkoutOS was born.

PD: I am actively maintaining the app, so feedback is highly appreciated.