Over time, the service grew outdated. Weak mechanics and legacy constraints were killing engagement.

Starting from scratch, I mapped out the core parts of the service and outlined the implementation plan. I started with the training step layout to account for edge cases and get early alignment with the dev team.

Once the first drafts were ready, I ran usability tests with a UX researcher, fixed key clarity issues, and noted hypotheses for future iterations.

From there, I built out the core learning mechanics: recognition, spelling, listening, and speaking. I specced out states, edge cases, and analytics requirements for the dev team, and kept docs on decision rationale.

I designed for iOS, web, and Android, keeping things consistent across all three.

Next came gamification. We added positive feedback after every five correct answers, end-of-session stats to make progress visible, and daily streaks to encourage consistent practice.

The final solution was an 18-step session where students practice 9 words through different mechanics with increasing difficulty. It ends with progress stats and a quick option to start the next session, creating a seamless learning flow.

The results took some iteration. Following the initial rollout, the test group lagged behind the control group. We interviewed inactive test users to validate our hypotheses and prioritize improvements. After implementing the top changes, retention and time spent both exceeded the control group, achieving our initial goal.

The key lesson was about ownership. I stepped in as a product manager for three months on short notice, and turns out, I could handle it.