Sweatcoin

Building the habit loop

Sweatcoin

Building the habit loop

Sweatcoin

Building the habit loop

Sweatcoin

Building the habit loop

Sweatcoin had 140M users, most of them barely opened the app. I spent 4 years turning passive step tracking into something people actually come back to, using goals, streaks, and a tighter core loop.

Sweatcoin had 140M users, most of them barely opened the app. I spent 4 years turning passive step tracking into something people actually come back to, using goals, streaks, and a tighter core loop.

Sweatcoin had 140M users, most of them barely opened the app. I spent 4 years turning passive step tracking into something people actually come back to, using goals, streaks, and a tighter core loop.

Sweatcoin had 140M users, most of them barely opened the app. I spent 4 years turning passive step tracking into something people actually come back to, using goals, streaks, and a tighter core loop.

Timeline

2020-2024

Platform

iOS & Android

Team Led

4 Product Designers (last year)

The challenge

Sweatcoin worked almost entirely in the background, steps turned into coins but there was no real reason to open the app on a daily basis. People liked the idea and what it stood for, but it never quite became a habit.


Without a clear trigger, a sense of progress, or any urgency, it was easy to forget about it altogether.

My role

First 3 years working on different parts of the product like the marketplace, social features, growth and monetization.


Later on, I stepped into a Lead role, managing a small team to drive the design language and direction of the core experience, including the habit loop redesign.

Path Experiment

We started big, with a map-style progression system where users unlocked rewards along a journey. UX tests were promising and users thought it was a cool idea, more game-like so we built it fully to test.

Ultimately it failed

After multiple A/B tests it ended up being too much to take in and added friction instead of removing it. Users loved the idea of it and the visuals but ultimately it was just not right for this product.

Path Experiment

We started big, with a map-style progression system where users unlocked rewards along a journey. UX tests were promising and users thought it was a cool idea, more game-like, and we built it fully to test.

Ultimately it failed

After multiple A/B tests it ended up being too much to take in and added friction instead of removing it. Users loved the idea of it and the visuals but ultimately it was just not right for this product.

Old

New

Goal Setting & Streak Modals

Wed

Wed

Thu

Thu

Fri

Fri

Sat

Sat

Sun

Sun

MoN

MoN

Sat

Sat

Sun

Sun

3 days streak!

3 days streak!

You’re crushing your activity goal

You’re crushing your activity goal

Got it!

Got it!

Wed

Thu

Fri

Sat

Sun

MoN

Sat

Sun

3 days streak!

You’re crushing your activity goal

Got it!

Set your daily goal

Achieve your daily goal to continue your streak

Easier

Recommended

Harder

Achieve streaks by completing your goal multiple days in a row.

New Goal

5,500

Steps

Current avg. of 4,750 steps a day

10% Increase

Set up Daily Goal

Wed

Wed

Wed

Thu

Thu

Thu

Fri

Fri

Fri

Sat

Sat

Sat

Sun

Sun

Sun

Mon

Mon

Mon

25-day streak lost!

25-day streak lost!

25-day streak lost!

Yesterday you didn’t achieve your daily goal, don’t let your streak to get lost

Yesterday you didn’t achieve your daily goal, don’t let your streak to get lost

Yesterday you didn’t achieve your daily goal, don’t let your streak to get lost

Recover Streak by Watching Ad

Recover Streak by Watching Ad

Recover Streak by Watching Ad

No Thanks

No Thanks

No Thanks

What worked

The idea of goals and streaks clearly resonated, so we kept building around it. We simplified the core experience by using a circular progress indicator to make daily progress instantly understandable, and introduced small celebratory moments across the app to reinforce that feeling of progress.

Resulted in

+20%

Day 7 retention

+13%

Daily

engagement

Daily engagement

New badges system

We also added a badge system to reward long-term effort beyond just earning coins. Sweatcoins still covered the tangible value through the marketplace, while badges and streaks gave people a reason to come back daily and stay consistent.


This way, the product worked for both people looking for quick value, and those motivated by progress and habit.

Widgets to reinforce the habit

Since the app had mostly been passive, we doubled down on the new mechanics and took inspiration from Duolingo. Widgets turned out to be a simple but powerful way to give users more context and, more importantly, keep streaks alive.

Making rewards feel worth it

Alongside the core loop, I also redesigned the marketplace to make it easier to scale and manage over time. The focus was on simplifying how new rewards and partnerships get added, while making the experience feel more alive and worth browsing, like your coins actually had somewhere meaningful to go.

Resulted in

+6%

Revenue increase

Other random stuff

Micro interactions, new nav bar and other experiments I did

Over that time I worked across a wide range of features and experiments — from onboarding to rewards to monetisation. This case study focuses on the habit loop, but it’s just a glimpse of the overall work.

If we vibe, reach out at

Thank you for visiting my personal space.

2026 Copyright © Octavian Rosca

💖

If we vibe, reach out at

Thank you for visiting my personal space.

2026 Copyright © Octavian Rosca

💖