Fitness

30 Day Fitness

The app that helped people finally stick to fitness.

iOSAndroid

65%

Increase in workout completion rate

45%

Growth in monthly active users

When we first started working on 30 Day Fitness back in 2015, we noticed something: most fitness apps were trying to do too much. Long, complicated programs. Tons of features. But what people really needed was simple structure and motivation, something they could start right away and actually stick to. That's the idea that kicked this app off.

Product preview

The product, on the device that matters.

Screens from the shipping build of 30 Day Fitness. Designed to work on the first try and survive everyday use.

iOSAndroid

The problem

Where things stood.

Back then, fitness apps weren't great at helping users stay consistent. Most plans felt generic, and there wasn't much accountability. People would download a fitness app, try it for a few days, then forget about it. No daily check-ins, no progress tracking, and no sense of completion, which meant users dropped off quickly.

The solution

What we built.

We built a native app from scratch, using Swift for iOS and Kotlin for Android. The focus was clear: one workout a day for 30 days. No fluff. Each challenge was easy to start, had a clear structure, and gave users a sense of progress. The design was clean, the tone was encouraging, and the experience was built for momentum.

Goals

What we set out to move.

Create something simple and clear: 30-day fitness challenges that feel doable.
Help users build consistency, not just by working out, but by showing up every day.
Make the app lightweight and beginner-friendly.
Let users train anywhere, even offline.

How we did it

The shape of the engagement.

We kept the interface super minimal, no clutter, just today's workout front and center.
Introduced gamified features like streak tracking and badges to keep motivation high.
Used Firebase to handle notifications, user data, and analytics.
Enabled offline access so users could complete workouts anywhere, even without Wi-Fi.
Got real feedback early from test users to make sure it stayed practical and motivating.

Tech stack

Built with the tools that fit the project.

Firebase

Swift

Kotlin

Results

65%

Increase in workout completion rate

45%

Growth in monthly active users

This app wasn't built to impress with features, it was built to help people finish. And that's what made it work. It helped users break the cycle of "start and quit" by giving them small, daily wins. In the end, that's what fitness is really about, not intensity, but consistency. And that's exactly what 30 Day Fitness delivered.

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Have an idea worth building well?

Tell us where you are. Concept, prototype, or already live. We will spend an hour on the phone, share a clear next step, and you walk away with notes worth keeping either way.

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