--- title: Building & Deploying a Simple Kotlin Multi-Platform App:... description: Creating a Kotlin multi-platform application involves careful management of secrets, implementing platform-specific app launchers, and designing unique app... canonical: https://daily.dev/posts/building-deploying-a-simple-kotlin-multi-platform-app-secrets-launchers-and-app-icons-ire5sykdm twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Building & Deploying a Simple Kotlin Multi-Platform App: Secrets, Launchers, and App Icons | daily.dev og:description: Creating a Kotlin multi-platform application involves careful management of secrets, implementing platform-specific app launchers, and designing unique app... og:url: https://daily.dev/posts/building-deploying-a-simple-kotlin-multi-platform-app-secrets-launchers-and-app-icons-ire5sykdm og:image: https://api.daily.dev/og/posts/irE5sYKDM.png og:image:alt: Building & Deploying a Simple Kotlin Multi-Platform App: Secrets, Launchers, and App Icons og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Building & Deploying a Simple Kotlin Multi-Platform App: Secrets, Launchers, and App Icons **[Collections](https://daily.dev/sources/collections)** · 2 min read · 2 upvotes · 0 comments ## Summary Creating a Kotlin multi-platform application involves careful management of secrets, implementing platform-specific app launchers, and designing unique app icons. Developers must ensure secure handling of API keys, proper launching methods for apps across Android, iOS, desktop, and web, and adherence to platform-specific icon standards to achieve cohesive, robust applications. ## Content # Building & Deploying a Simple Kotlin Multi-Platform App: Secrets, Launchers, and App Icons Creating a Kotlin multi-platform (KMP) application demands attention to detail across various aspects from app design to security and functionality. This guide discusses the essential elements required for building and deploying a simple KMP app, focusing on the management of secrets, app launchers, and app icons. ## Managing Secrets in KMP Apps Handling secrets securely during compile and build time is crucial for maintaining application integrity. When developing KMP applications, secrets such as API keys and credentials must be managed wisely to avoid potential leaks. Each platform—Android, iOS, desktop, and web—requires specific approaches: - **Android and iOS**: Use environment configurations and encrypted storage to manage secrets securely. - **Desktop and Web**: Implement file-based encryption and secure server communications. Practical examples illustrate how secrets can be utilized and stored safely, ensuring that sensitive information remains protected in diverse environments. ## Implementing Launchers Across Platforms Launching external applications like Email, SMS, Gmail, and WhatsApp is integral to user interactivity. KMP offers methods to handle such tasks effectively. Implementing URL schemes and intents for Android and iOS requires distinct techniques tailored to each OS: - **Android**: Utilize intents and dependency injection for app launching. - **iOS**: Implement URL schemes with strong interface bindings. - **Desktop and Web**: Craft launcher scripts and leverage browser-based URL handlers. This approach addresses platform-specific challenges, ensuring seamless app launching functionalities across all supported environments. ## Designing App Icons for KMP Projects Creating distinctive and compliant app icons is essential for brand identity and user recognition. KMP applications need app icons tailored for respective platforms like Android, iOS, Mac, Windows, Linux, and Web. Icon design must consider: - **File Formats**: PNG, SVG, and ICO formats are commonly used depending on platform needs. - **Resolution Requirements**: Adhere to device-specific size standards and pixel densities. Practical advice on managing icon assets efficiently ensures smooth deployment and adaptation to various platforms, helping maintain a unified visual aesthetic. In conclusion, building a Kotlin multi-platform app encompasses several integral components—secure management of secrets, smooth app launching protocols, and standardized app icons. By navigating these areas meticulously, developers can achieve robust, secure, and visually cohesive applications that excel across Android, iOS, desktop, and web platforms. ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 1 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments - [CNCF Unveils Schedule for KubeCon \+ CloudNativeCon Europe 2026](https://daily.dev/posts/cncf-unveils-schedule-for-kubecon-cloudnativecon-europe-2026-ikhcoa5cb) · CNCF · 2 upvotes · 0 comments - [CNCF Debuts KubeCon \+ CloudNativeCon Japan 2026 Schedule](https://daily.dev/posts/cncf-debuts-kubecon-cloudnativecon-japan-2026-schedule-xp5pyudub) · CNCF · 1 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#kotlin](https://daily.dev/tags/kotlin) [View this post on daily.dev](https://daily.dev/posts/building-deploying-a-simple-kotlin-multi-platform-app-secrets-launchers-and-app-icons-ire5sykdm) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Building & Deploying a Simple Kotlin Multi-Platform App: Secrets, Launchers, and App Icons","url":"https://daily.dev/posts/building-deploying-a-simple-kotlin-multi-platform-app-secrets-launchers-and-app-icons-ire5sykdm","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/building-deploying-a-simple-kotlin-multi-platform-app-secrets-launchers-and-app-icons-ire5sykdm"},"datePublished":"2025-05-10T06:00:27.734Z","dateModified":"2025-05-10T06:00:39.637Z","description":"Creating a Kotlin multi-platform application involves careful management of secrets, implementing platform-specific app launchers, and designing unique app...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/8dd45da8e17fdbd28168d8b61b6cb69f?_a=AQAEuj9","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/8dd45da8e17fdbd28168d8b61b6cb69f?_a=AQAEuj9","isAccessibleForFree":true,"articleSection":"Collections","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Collections","logo":"https://media.daily.dev/image/upload/s--fk_6ycEi--/f_auto,q_auto/v1780996001/logos/collections?_a=BAMAMiWQ0","url":"https://daily.dev/sources/collections"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/building-deploying-a-simple-kotlin-multi-platform-app-secrets-launchers-and-app-icons-ire5sykdm","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"security,kotlin","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Collections","item":"https://daily.dev/sources/collections"},{"@type":"ListItem","position":3,"name":"Building & Deploying a Simple Kotlin Multi-Platform App: Secrets, Launchers, and App Icons"}]} ```