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How Mobile Apps Are Built
A plain-language walk through the stages of mobile app development, from the first idea and design sketches to testing, release and ongoing maintenance.
Apps and Everyday Tech
Mobile Apps
How apps are made, distributed and kept running.
App Subscriptions and In-App Purchases Explained
How billing inside mobile apps typically works, the difference between one-time purchases and subscriptions, and how to review and cancel charges.
How Mobile Operating Systems Manage Memory and Apps
Learn how phones juggle many apps with limited memory and battery, why apps get paused or closed in the background, and what swiping away really does.
How Push Notifications Work
How a server reaches your phone with an alert even when an app is closed, the role of the platform notification services, and how to manage what you receive.
Native Apps and Web Apps Compared
Compare apps built for one phone platform with web apps that run in a browser, including speed, features, offline use, updates, cost and how to choose.
Progressive Web Apps Explained
What progressive web apps are, how service workers and manifests let a website install and work offline, and where they fall short compared with store apps.
What an API Is in Plain Language
A plain-language explanation of what an API is, using restaurant and electrical-outlet analogies, with examples of requests, responses, keys and common limits.
What App Stores Do and How Apps Are Reviewed
What app stores actually do, from distribution and payments to automated and human review checks, why they exist, and what their limits are for users.
Why Apps Ask for Permissions
Why mobile apps request access to your camera, location, contacts and more, how permission prompts work, and how to judge whether a request makes sense.
Why Your Phone Battery Drains Faster Over Time
Why phone batteries lose capacity as they age, which software habits and settings speed up battery drain, and practical steps that may help it last longer.
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