Stuart Hall

Perth based mobile app founder and App Store Experiment author. Co-founder of Appbot and creator of 7 Minute Workout.

Latest posts

How I use Product Page Optimization (PPO) in App Store Connect to A/B test App Store screenshots without waiting forever for 90% confidence.

Apr 29, 2026

I’m bringing the App Store Experiment back in 2026. Learn what’s happened and what’s next. Subscribe to follow the results.

Mar 11, 2026

Are App Store subscriptions better than one-off in-app purchases? See our pricing tests to $1k in monthly recurring revenue.

Aug 2, 2020

How isolation and COVID-19 reshaped downloads, revenue, and product experiments.

May 20, 2020

After 4.5 years I've re-acquired the app! Here's what's happened.

Dec 4, 2019

The finale - HealthKit, features, acquisition, and final stats.

Feb 9, 2015

Seven months later more IAPs, education spikes, AppbotX learnings, and what's next.

Aug 5, 2014

Five months later steady downloads, declining sales, IAP pricing tests, and what's next.

Jan 28, 2014

Part two charity update, blog post impact, IAP results, and lessons learned.

Aug 14, 2013

What happened when I built a 7-minute workout app in a single night and launched it quietly.

Jun 20, 2013