Systems | Development | Analytics | API | Testing

Push notifications are one of the most powerful retention tools in mobile. iOS opt-in rates average 40–45%, and apps that use push effectively can triple their long-term retention. However poorly timed, poorly crafted alerts can drain our open rates, leading to opt-outs and disengagement. When designing iOS push notifications, we need to think about engagement and retention, not just impressions.

UIKit is Apple’s primary framework for building user interfaces on iPhone and iPad. If you’ve read that it’s about to be deprecated, don’t believe the reports. In 2026 UIKit remains as integral to production apps as it’s ever been. In this guide we’ll focus on how UIKit actually works. The lifecycle timing, the navigation structure, the memory management and (our favorite) the production debugging. You’ll find it useful if you’re.

PHP applications are often tricky to debug. A combination of loose typing, complex logic and a lack of runtime visibility can make it hard to catch errors before they reach our users. But if you’re using PHP, there’s no need to stress. This guide will equip you to understand why PHP applications break, return the wrong data or behave differently across environments. We’ll cover logs, runtime checks, Xdebug, IDE tools, request debugging, and production visibility.