# Effective Android One of the most popular newsletters about Android development. I write the content I'd want to read. Complex concepts explained in easy terms. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## Proficient Android AI training program addresses AI-agent workflows for Android teams DevFeed: [Proficient Android AI training program addresses AI-agent workflows for Android teams]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2026-08-25T07:21:15Z Content type: opinion Language: en Sources: [Effective Android]() Topics: [Android](), [android-development](), [AI-assisted coding](), [AI Agent](), [Development](), [Mobile]() Tags: [ai-agents](), [ai-coding-agents](), [android](), [android-development](), [productivity](), [workflows]() ### AI overview The author describes common problems Android teams encounter when using AI coding agents, including repeated context, nondeterministic output, poorly reviewed code, generic prompts, fragile tests, and oversized pull requests. The article announces Proficient Android AI, a practical training program focused on improving AI-agent workflows for Android engineers and teams. ### Source excerpt Proficient Android AI teaches Android engineers how to get ahead with AI agents now: better output, fewer wasted tokens, more deterministic results, and workflows built for real Android teams. ## The Downsides of Agentic Skills DevFeed: [The Downsides of Agentic Skills]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2026-05-17T14:18:52Z Content type: opinion Language: en Sources: [Effective Android]() Topics: [context](), [Tech Debt](), [Latency](), [Testing]() Tags: [agentic](), [context](), [evals](), [latency](), [tech-debt](), [testing]() ### AI overview The article discusses tradeoffs of using agentic skills in production projects, including context costs, fuzzy triggering, nondeterministic behavior, harder testing, technical debt, and a growing permission surface. ### Source excerpt Skills are seductive. ## A tool for generating Google Play feature graphics DevFeed: [A tool for generating Google Play feature graphics]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2026-05-07T13:41:05Z Content type: release Language: en Sources: [Effective Android]() Topics: [Google Play](), [App](), [Google](), [Publishing]() Tags: [app](), [color](), [feature](), [generate](), [google-play](), [publishing]() ### AI overview The article introduces a tool for generating Google Play feature graphics. Users provide an app name and brief description, then choose a brand color. ### Source excerpt Introducing the fastest way to generate feature graphic for Google Play out there 🔥 ## Introducing Compose Loaders: a curated collection of copy-paste animated loaders for Jetpack Compose 🌀 DevFeed: [Introducing Compose Loaders: a curated collection of copy-paste animated loaders for Jetpack Compose 🌀]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2026-04-03T13:37:34Z Content type: release Language: en Sources: [Effective Android]() Topics: [Compose](), [Jetpack Compose](), [React]() Tags: [animation](), [collection](), [components](), [compose](), [copy](), [free](), [jetpack-compose]() ### AI overview Compose Loaders is a free collection of copy-paste animated loader components for Jetpack Compose, created by porting loading animations originally built for React. ### Source excerpt A few days ago I stumbled upon a sick loading animation someone built for React... so I decided to port it to Jetpack Compose. ## A Claude Skill to Generate Professional App Store Screenshots ❤🔥 DevFeed: [A Claude Skill to Generate Professional App Store Screenshots ❤🔥]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2026-03-23T15:20:56Z Content type: opinion Language: en Sources: [Effective Android]() Topics: [Claude Code](), [App](), [Code]() Tags: [app](), [claude-code](), [editor](), [screenshots]() ### AI overview The author presents a Claude Code skill that generates production-ready screenshots for apps and deploys them to an online editor for iteration. The skill also works with other code agents that support skills. ### Source excerpt I built a Claude Code skill that generates production ready screenshots for your app and deploys them to a powerful online editor so you can iterate as much as you want. ## get12testers.com Helps Android Developers Meet Google Play's 12-Testers-for-14-Days Requirement DevFeed: [get12testers.com Helps Android Developers Meet Google Play's 12-Testers-for-14-Days Requirement]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2026-03-14T13:57:35Z Content type: release Language: en Sources: [Effective Android]() Topics: [Android](), [Google Play](), [App]() Tags: [android](), [days](), [free](), [google-play]() ### AI overview The article introduces get12testers.com, a credit-based platform where Android developers test one another's apps to help meet Google Play's requirement for 12 testers over 14 continuous days. It describes checkpoints, credits, testing reports, and pre-filled production access form answers. ### Source excerpt A platform where Android devs help other Android devs to overcome this hard requirement from the Google Play console. ## ScreenshotWhale big price drop (temporary) DevFeed: [ScreenshotWhale big price drop (temporary)]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2026-02-02T18:30:25Z Content type: opinion Language: en Sources: [Effective Android]() Topics: [App](), [Android](), [Discord]() Tags: [android](), [app](), [apps](), [community](), [discord](), [store]() ### AI overview A personal newsletter post announces a temporary 50% price reduction for ScreenshotWhale, a tool designed to help developers create consistent App Store and Play Store screenshots without design skills or a designer. ### Source excerpt Available first for subscribers of this newsletter and the Discord community ## I love building apps. Designing App Store screenshots not that much 😅 DevFeed: [I love building apps. Designing App Store screenshots not that much 😅]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2026-01-22T18:30:52Z Content type: opinion Language: en Sources: [Effective Android]() Topics: [App](), [Development](), [Artificial Intelligence]() Tags: [ai](), [app](), [building-products](), [design](), [developers](), [drag-and-drop](), [editor](), [generation](), [subscriptions](), [templates]() ### AI overview A developer describes building a drag-and-drop product for creating polished App Store and Play Store screenshots. The product evolved from a personal tool into a public platform with templates, multiple screen ratios, AI-powered generation, automatic internationalization, subscriptions, and free templates. ### Source excerpt Most developers don't have a designer eye, and that's completely okay. ## SmartShots AI generates and localizes App Store screenshots in ScreenshotWhale DevFeed: [SmartShots AI generates and localizes App Store screenshots in ScreenshotWhale]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2026-01-12T12:27:37Z Content type: release Language: en Sources: [Effective Android]() Topics: [App](), [Mobile](), [Artificial Intelligence](), [Development]() Tags: [ai](), [app](), [app-development](), [env-file-security](), [generate](), [mobile](), [mobile-apps](), [screenshot]() ### AI overview The article announces SmartShots AI for ScreenshotWhale, a feature that generates App Store screenshots from uploaded images and adds them to an editable project. It also describes automatic localization during export and says the feature is included with the monthly subscription. ### Source excerpt Removing the final bottleneck for vibe coders building mobile apps 🚀 ## 🎅 Big Xmas discounts for Jetpack Compose Internals (book+course) and The Manifest Android Interivew DevFeed: [🎅 Big Xmas discounts for Jetpack Compose Internals (book+course) and The Manifest Android Interivew]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2025-12-22T11:38:29Z Content type: article Language: en Sources: [Effective Android]() Topics: [Jetpack Compose](), [Compose Compiler]() Tags: [compose-compiler](), [jetpack-compose]() ### AI overview A promotional article announcing Christmas discounts for a Jetpack Compose internals book and cohort course, alongside The Manifest Android Interview book. It describes the Compose materials as covering Compose internals, the compiler, runtime, and client-library creation. ### Source excerpt It's that time of the year again 🥳 let's celebrate together ## Android interview resources and a Compose Stability Inference guide DevFeed: [Android interview resources and a Compose Stability Inference guide]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2025-10-17T18:01:31Z Content type: opinion Language: en Sources: [Effective Android]() Topics: [Android](), [Jetpack Compose](), [Compiler](), [Inference](), [Algorithms]() Tags: [algorithms](), [android](), [compiler](), [compose-compiler](), [configuration](), [generics](), [inheritance](), [interfaces](), [jetpack-compose](), [reports](), [type-system]() ### AI overview A promotional newsletter post highlights an Android interview book with interview questions and practical tips, and a Compose Stability Inference guide covering the Compose compiler's stability type system, inference algorithms, compiler phases, and performance-related tooling. ### Source excerpt Exclusive price and resources for the newsletter subscribers only ## How I Wrote a Tech Book Without Finishing It First DevFeed: [How I Wrote a Tech Book Without Finishing It First]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2025-09-30T17:30:47Z Content type: opinion Language: en Sources: [Effective Android]() Topics: [Publishing](), [Jetpack Compose](), [Compose]() Tags: [book](), [compose](), [developers](), [opinion](), [publishing](), [revenue](), [sales](), [technical]() ### AI overview The author describes publishing Jetpack Compose Internals before the manuscript was complete, using Leanpub to release an initial version and update it with new chapters. Launching on the day Compose 1.0 became stable provided early validation and momentum, with reported revenue reaching around $70,000 in total. ### Source excerpt A lot of Android developers tell me they've thought about writing a technical book. ## ScreenshotWhale Generates App Store Screenshots with a Layer-Based Editor and Automatic Localization DevFeed: [ScreenshotWhale Generates App Store Screenshots with a Layer-Based Editor and Automatic Localization]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2025-09-16T16:36:22Z Content type: article Language: en Sources: [Effective Android]() Topics: [App](), [Artificial Intelligence](), [Vibe coding](), [Figma](), [Internationalization (i18n)](), [Cloud](), [User Experience]() Tags: [ai](), [android](), [app](), [app-store](), [building](), [cloud](), [code](), [coding](), [editor](), [export](), [figma](), [i18n](), [ios](), [languages](), [phones](), [templates]() ### AI overview The article introduces ScreenshotWhale, a cloud-based service for creating app store screenshots. It offers a Figma-style layer-based editor, templates, support for Android and iOS device formats, and automatic internationalization during export. The product is in its initial stages and is presented as seeking user feedback. ### Source excerpt Some words for the people who joined the newsletter these days. ## Launching ScreenshotWhale.com 🐋 DevFeed: [Launching ScreenshotWhale.com 🐋]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2025-09-13T15:03:52Z Content type: release Language: en Sources: [Effective Android]() Topics: [App](), [Android](), [iOS](), [Internationalization (i18n)](), [export](), [Cloud]() Tags: [android](), [app](), [cloud](), [editor](), [export](), [i18n](), [image](), [ios](), [layer](), [screenshots](), [templates]() ### AI overview ScreenshotWhale has launched as a cloud-based tool for creating app screenshots. It includes an online editor, templates, multilingual export, support for iOS and Android form factors, a mirror feature, app store layout settings, and layered editing. ### Source excerpt The wait is over, screenshotwhale is live today 🎉 ## Affiliate program launched for the Jetpack Compose Internals course DevFeed: [Affiliate program launched for the Jetpack Compose Internals course]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2025-09-06T16:13:43Z Content type: opinion Language: en Sources: [Effective Android]() Topics: [Compose](), [Jetpack Compose](), [Android]() Tags: [android](), [compose](), [course](), [jetpack-compose](), [money]() ### AI overview The author announces an affiliate program for the Jetpack Compose Internals course. Participants can share the course and earn up to 20% of each sale, with enrollment currently limited and handled on a first-come, first-served basis. ### Source excerpt Become an affiliate of Jetpack Compose internals. Help me + help others to learn + make some money in the process 🔥 ## Purchasing Power Parity and two-installment payments enabled for the Jetpack Compose internals course DevFeed: [Purchasing Power Parity and two-installment payments enabled for the Jetpack Compose internals course]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2025-09-04T19:01:29Z Content type: release Language: en Sources: [Effective Android]() Topics: [Compose]() Tags: [compose](), [course]() ### AI overview The author announces that purchasing power parity pricing and an option to pay in two installments have been enabled for the Jetpack Compose internals course. ### Source excerpt Save money if you are physically located in one of the required countries 🫰 also enabled the option to pay in 2 installments 🚀 ## How I made side income from Jetpack Compose: My journey DevFeed: [How I made side income from Jetpack Compose: My journey]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2025-09-03T17:50:03Z Content type: opinion Language: en Sources: [Effective Android]() Topics: [Jetpack Compose](), [Compose](), [Android](), [Development](), [React]() Tags: [android](), [book-writing](), [code](), [compose](), [content-creation](), [development](), [jetpack-compose]() ### AI overview The author describes building side income around Jetpack Compose through years of Android content creation, a book, and a course. The article explains how consistent sharing, conference talks, and early recognition of Compose's potential created opportunities for deeper educational work. ### Source excerpt Learn how I built a successful side income from Jetpack Compose through content creation, book writing, and course development. My complete journey. ## Preorder StoreShots 📱🎇 DevFeed: [Preorder StoreShots 📱🎇]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2025-08-16T22:28:12Z Content type: release Language: en Sources: [Effective Android]() Topics: [App](), [.NET Conf]() Tags: [app](), [app-store](), [launch](), [play-store](), [screenshot](), [screenshots](), [service](), [templates]() ### AI overview StoreShots is a new service for generating screenshots for the Google Play Store and Apple App Store. The article announces a limited preorder offering with discounted lifetime access, early access, and access to available templates. ### Source excerpt Available for a limited number of people ## Remembering why we code DevFeed: [Remembering why we code]() Original publisher: [Read original article]() Author: Jorge Castillo Published: 2025-08-16T13:20:23Z Content type: opinion Language: en Sources: [Effective Android]() Topics: [Programming](), [Code](), [App](), [Mobile](), [Network]() Tags: [building](), [code](), [developer](), [network](), [programming](), [projects]() ### AI overview An opinion piece reflecting on how curiosity, joy, and the challenge of creating tangible software motivated the author to become a developer. It argues that the satisfaction of making something real remains more meaningful than money or industry hype. ### Source excerpt A reminder that the best part of programming has always been the thrill of creating