Filip Němeček — iOS developer building apps and tools, with additional work in Python and Django. Shares practical articles, projects, and indie app work.
159 articles from this blog
A guide for iOS developers on implementing private analytics using TelemetryDeck SDK, covering setup and basic event tracking.
A quick start tutorial for implementing Dynamic Island and Live Activities on iOS using Swift, WidgetKit, and Xcode.
Tips from indie developers on how to increase your chances of getting your app featured on the Apple App Store by using Apple's official submission form.
A developer's detailed guide on writing and distributing press releases for tech apps, based on personal success getting coverage for Chill Zones and SwitchBuddy.
A tutorial on implementing swipe actions (like delete and favorite) in iOS Collection Views using UICollectionLayoutListConfiguration.
A tutorial on creating and customizing lists in iOS apps using UICollectionView's Compositional Layout API.
A guide on creating multiple app targets in Xcode with different Bundle IDs for TestFlight, covering duplication, configuration, and runtime parameters.
A tutorial on implementing and customizing the iOS 16+ UICalendarView for single and multi-date selection in UIKit apps.
A technical tutorial on implementing Apple's Live Text API using VisionKit's ImageAnalyzer and ImageAnalysisInteraction in iOS 16 apps.
A tutorial on customizing the height of UIKit bottom sheets in iOS 16 using the new custom detent API.
A technical guide on how to resize images in Swift using UIGraphicsImageRenderer and AVFoundation while preserving aspect ratio.
A tutorial on implementing file selection from the iOS Files app using UIDocumentPickerViewController, covering setup, delegation, and security-scoped resource access.
A guide showcasing well-designed press kit examples for mobile apps, with analysis of their structure and content.
A checklist of essential features to implement before launching an iOS app, including contact methods, crash reporting, and review prompts.
A technical guide to fully customizing the UINavigationBar in UIKit, covering background, title, button colors, and status bar style.
A guide to debugging and inspecting files in iOS apps using the Files app and Xcode's container download feature.
A developer shares common tips and feedback from reviewing over 10 iOS app press kits, focusing on content, screenshots, and asset presentation.
A guide for iOS developers on how to programmatically open their app's Documents folder in the Files app using a URL scheme.
A tutorial on implementing gradient borders for UIViews in UIKit using CAGradientLayer and UIColor patterns.
A guide to correctly implementing gradient text in UIKit's UILabel, covering common pitfalls and solutions for proper rendering.
