I build mobile money products that people trust with their savings.

01 / The context

A savings app for everyone — including a $0.05 deposit

Chumz lets people save toward personal or group goals through mobile money, with a default Quick Save goal for when they don't have a specific target in mind.

When I joined in January 2023 the product had traction — about 30,000 users — and a long list of rough edges standing between it and the next order of magnitude.

02 / My role

Owning the mobile experience end-to-end

I develop, design and prototype the mobile interfaces — and collaborate with other team members to ship features that remind our users that Saving is a pillar of personal finance and enforce the habit through gamification.

Two threads ran through that work: remodelling core user flows — tearing down and rebuilding the journeys people take most — and finding new ways to gamify saving.

Mia Kwa Mia (100 for 100) — save KES 100 a day — was the first, born from asking whether daily earners could be nudged into saving small and often. The app now has 6 such challenges users return to regularly.

03 / The unglamorous win

A dashboard that gave the support team superpowers

Growth creates tickets. I designed and built a tailored customer-success dashboard that pulled a scattered, multi-tool process into one screen — so the team could see, triage and resolve issues without jumping between five tools to do it.

Internal tools rarely make portfolios. They should: they're where you learn to build for your colleagues and make their work much easier.

The dashboard resolves 300+ tickets a month. A one-tap "Get Help" button routes users straight to WhatsApp, so no one's left guessing about their savings.

04 / The result

16.7× growth, and features that move real money

The product grew from 30,000 users to over 500,000 during my tenure, and the features I shipped meant people were saving more, and more often.

"Working next to Favour, you notice he treats every screen like someone's real money is behind it — because it is. That discipline made the rest of us better, not just his own code."

— Antonio Maina, Engineer, Chumz