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Demosphere · 2022–2026

Mobile app rebuild

A three-month rebuild of a mobile app serving 500,000+ users, with a 90% cut in API response times and a jump from 2.5 to 4+ stars.

500,000+ users
~90% faster API
Ratings 2.5 → 4+
Rebuilt in 3 months

The problem

The existing mobile app was slow and poorly rated, and it served a large, active user base of families and organizers. A gradual patch-by-patch approach would not have moved the numbers that mattered, and users were feeling the friction daily.

The approach

We rebuilt the app over three months, reworking the API surface to cut response times and payload sizes, improving client-side render performance, and adding features such as in-app messaging. The work was structured so the team could ship incrementally rather than disappear for a big-bang release.

The outcome

API response times and payload sizes dropped by around 90%, the app felt noticeably faster, and app store ratings climbed from 2.5 to over 4 in the same window.

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