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Sixty Strong
A 60-day habit-building app that helps people strengthen their fitness, faith, and relationships through daily challenges and team accountability.
About the project
Sixty Strong turns a personal commitment into a structured 60-day journey, giving people a clear way to build physical, spiritual, and relational habits together.
Rather than leaving users to work through goals alone, the product pairs daily practices with a small team so progress, encouragement, and accountability stay visible throughout the challenge.
Daily challenges bring exercise, scripture reading, prayer, and relationship-building practices into one repeatable routine.
Personalised challenge levels make the experience adaptable to each participant while keeping the 60-day commitment clear.
Teams of up to eight participants create a focused accountability group where members can support one another through the challenge.
Progress tracking and team activity give members a simple shared view of the habits they are building and the people alongside them.
Results
Sixty Strong is live on iOS and Android, giving participants a mobile-first way to take part in a shared 60-day challenge.
The product brings the daily challenge, personal progress, and team accountability into one connected experience instead of splitting those habits across separate tools and conversations.
That gives each team a clearer rhythm for showing up, supporting one another, and staying engaged across physical fitness, spiritual growth, and emotional connection. Participants can see their own daily habits alongside team activity and shared progress, making it easier to turn a broad intention into a consistent practice. By keeping individual effort and encouragement in the same flow, the experience gives people a practical reason to return each day and stay connected through the full challenge.
My role
Flutter Developer
Firebase Engineer
Mobile App Developer
Release Engineer
Technical
- Flutter and Dart mobile application delivered for both iOS and Android from a shared codebase.
- Firebase backend supporting the connected product experience and its live app data.
- Challenge, daily-practice, team, and progress workflows shaped around a 60-day accountability journey.
- Mobile release preparation and store delivery for the App Store and Google Play.
What I worked on
I implemented Sixty Strong from the supplied design through to release, translating the approved product experience into a polished mobile app for iOS and Android.
The implementation covered challenge onboarding, daily fitness and faith practices, team participation, accountability, progress tracking, and notifications so the full journey could live in one focused app.
I built the Flutter application and Firebase-backed product experience, then handled the release work required to ship the app on iOS and Android.
Product showcase
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