Six apps, £50K+ revenue
Six apps, 20,000+ downloads and £50K+ in revenue — architecture through to acquisition, run by one engineer.
A portfolio of six iOS applications, each architected with MVVM and Combine, with offline persistence through SwiftData, Firebase push notifications and OAuth2 sign-in.
Together they have passed 20,000 downloads and generated over £50,000 in revenue — shipped, marketed and maintained without a team.
Running six apps solo means the marginal cost of each new one has to stay low. Six bespoke architectures would have been unmaintainable by the second year.
Downloads on their own do not pay. Revenue depends on users coming back, which makes retention the metric that matters rather than install count.
MVVM with Combine across the portfolio, so patterns — and fixes — transfer between apps instead of being re-solved each time.
SwiftData handles local persistence so apps stay usable without a connection, with Firebase push notifications and OAuth2 covering re-engagement and sign-in.
Data-driven UI/UX changes validated through A/B testing improved retention by 35% — the change that moved revenue more than any acquisition spend.
Social and content marketing drove more than 1M views, feeding installs without a paid acquisition budget.
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