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.

Xcode is the default development environment for building apps on Apple platforms. If you’re creating iOS, macOS, watchOS, or tvOS apps, you’ll end up in Xcode – whether you planned to or not. Xcode is powerful, reliable and intuitive. But it’s also opinionated. Learning how it expects you to work is often the difference between feeling productive and stuck.

Choosing between Android and iOS programming shapes literally every aspect of your programming life. The way you build. The costs you face. The complexity of your testing, the strategy of your distribution and the long-term scalability of your project. Both platforms are mature and capable of supporting complex, high-performance applications, but there are trade-offs.

JavaScript breakpoint is a pause point in code execution. Breakpoints are one of the most crucial tools available to us when debugging. Simply put, they enable us to pause our program in real time and inspect a particular chunk of code. We may have suspicions that a particular line is causing our app to crash, or simply want to check part of the call stack. Breakpoints give us this flexibility.

Breakpoints are one of the most useful tools we can call on when we’re debugging applications. If you’re not familiar, they allow us to pause execution and examine what the program is doing at that moment. And Android Studio offers a whole bunch of add-ons to supplement its core functionality. In this guide, we’ll show you how Android Studio breakpoints work and how you can maximize their potential in your day-to-day work.

Breakpoints are useful for all kinds of debugging. But for iOS debugging, they’re critical. iOS often veers away from the typical top-to-bottom flow. At the same time, its heavy reliance on async/await can inadvertently lead to concurrency and race conditions. As devs, we need a way to stop the train before it goes too far in the wrong direction. This is what Xcode breakpoints are designed for.

Choosing the wrong date-time API can seriously snarl up your Kotlin app. Timezone mismatches, formatting bugs, inconsistent timestamps – all of them can seriously drain your time and they’re hard to trace without the right tooling. Kotlin gives you multiple date-time tools – LocalDate, Instant, DateTimeFormatter, and kotlinx-datetime – but each is designed for a specific use case across Android, server-side, and multiplatform projects.

Imagine you’re mechanic trying to fix a car. There’s this magic piece of kit that allows you to pause the engine and see inside every moving part. You can tweak parts live, test changes instantly and measure which parts are slowing the whole thing down. This is JavaScript debugging in Chrome. Using Chrome DevTools, you can pause execution, inspect variables and scope, and follow code as it runs. So you can see what the code is actually doing at runtime, without assumptions.