--- title: Environment Variables with React Native & Expo |... description: Handling environment variables in React Native and Expo requires understanding that mobile apps are client-side and everything bundled can potentially be... canonical: https://daily.dev/posts/environment-variables-with-react-native-expo-tutorial-2026-vzhzowya3 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Environment Variables with React Native & Expo | Tutorial 2026 | daily.dev og:description: Handling environment variables in React Native and Expo requires understanding that mobile apps are client-side and everything bundled can potentially be... og:url: https://daily.dev/posts/environment-variables-with-react-native-expo-tutorial-2026-vzhzowya3 og:image: https://api.daily.dev/og/posts/vZhZowyA3.png og:image:alt: Environment Variables with React Native & Expo | Tutorial 2026 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. # Environment Variables with React Native & Expo | Tutorial 2026 **[Code with Beto](https://daily.dev/sources/codewithbeto)** · 2 min read · 0 upvotes · 0 comments ## Summary Handling environment variables in React Native and Expo requires understanding that mobile apps are client-side and everything bundled can potentially be extracted. Key rules: never store secrets (API keys, private tokens) in your app; public identifiers like analytics keys are acceptable but should use the EXPO_PUBLIC_ prefix to make intent explicit; for real secrets, move logic server-side using Expo's API routes so the client only communicates with your backend, which then handles sensitive credentials. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Install dev and production side by side with app variants](https://daily.dev/posts/install-dev-and-production-side-by-side-with-app-variants-xinzfaog8) · Expo Blog · 0 upvotes · 0 comments - [Here's What I’ve Learned from a Year of React Native Development](https://daily.dev/posts/here-s-what-i-ve-learned-from-a-year-of-react-native-development-bzq7nzrjp) · Atomic Spin · 1 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#mobile](https://daily.dev/tags/mobile), [#react-native](https://daily.dev/tags/react-native) [View this post on daily.dev](https://daily.dev/posts/environment-variables-with-react-native-expo-tutorial-2026-vzhzowya3) ```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":"Environment Variables with React Native & Expo | Tutorial 2026","url":"https://daily.dev/posts/environment-variables-with-react-native-expo-tutorial-2026-vzhzowya3","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/environment-variables-with-react-native-expo-tutorial-2026-vzhzowya3"},"datePublished":"2026-03-22T11:31:06.232Z","dateModified":"2026-03-22T11:36:03.826Z","description":"Handling environment variables in React Native and Expo requires understanding that mobile apps are client-side and everything bundled can potentially be...","image":"https://i.ytimg.com/vi/XkxmtLozKoA/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/XkxmtLozKoA/sddefault.jpg","isAccessibleForFree":true,"articleSection":"Code with Beto","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":"Code with Beto","logo":"https://media.daily.dev/image/upload/s--8oKUFd2X--/f_auto,q_auto/v1774179046/logos/codewithbeto?_a=BAMAMiWQ0","url":"https://daily.dev/sources/codewithbeto"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/environment-variables-with-react-native-expo-tutorial-2026-vzhzowya3","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"security,mobile,react-native","timeRequired":"PT2M","video":{"@type":"VideoObject","name":"Environment Variables with React Native & Expo | Tutorial 2026","description":"Handling environment variables in React Native and Expo requires understanding that mobile apps are client-side and everything bundled can potentially be...","thumbnailUrl":"https://i.ytimg.com/vi/XkxmtLozKoA/sddefault.jpg","uploadDate":"2026-03-22T11:31:06.232Z","duration":"PT2M","url":"https://api.daily.dev/r/vZhZowyA3","embedUrl":"https://www.youtube.com/embed/XkxmtLozKoA"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Code with Beto","item":"https://daily.dev/sources/codewithbeto"},{"@type":"ListItem","position":3,"name":"Environment Variables with React Native & Expo | Tutorial 2026"}]} ```