How do you get a newly translated Bible into the hands of people who need it — especially in communities with limited internet, complex scripts, or oral traditions? Scripture App Builder (SAB), a free desktop tool from SIL Global, lets Bible translators, church leaders, and missionaries create fully customized Android, iOS, and Progressive Web Apps with synchronized Scripture text and audio — no programming required.^1
SAB takes raw Paratext translation files and packages them into polished apps complete with synchronized audio that highlights each verse as it is read aloud — a powerful feature for communities still learning to read in their own language.^2 App creators control everything: fonts, colors, icons, splash screens, and even right-to-left script support. Apps can include glossaries, song books, picture story books, Bible study questions, verse-of-the-day notifications, reading plans, and a verse-on-image editor for sharing on social media.^2 An optional AI Assistant offers guided prompts like "explain this passage" or "suggest ways to apply this to my life," with carefully crafted system prompts to ensure biblically faithful responses — app creators configure the prompts, AI provider, and model themselves.^3
The tool's impact is remarkable: over 2,500 apps have been published for 1,960 languages across more than 140 countries, with over 65 million app installs worldwide.^3 Finished apps need no internet connection and can be shared phone-to-phone via Bluetooth or microSD card — critical for reaching remote communities. For broader distribution, apps can be published to the Google Play Store, Apple App Store, or deployed as Progressive Web Apps via Scriptoria.^1
The story behind SAB began in January 2014 with development work starting in Mali, West Africa, born from a meeting of partner organizations across the Sahel region who saw the need for Scripture apps that work offline and in local contexts.^4 Development became an international effort — with contributions from the United States, Thailand, Australia, Ghana, and Senegal — and the first public release came in April 2015.^4 Today SAB is actively maintained by SIL Language Technology with a rapid release cadence, including v14.0 (April 2026) adding Android 16 targeting, a built-in additional Bible versions wizard, Chinese and Thai interface localization, and iOS Assistant Chat, followed by v14.1 (May 2026) introducing an App Summary dashboard, built-in icon creation, RSS News Feeds, and enhanced contents menu layouts.^5
"I am very grateful for the app of our culture, the New Testament app. I love this because God gives each ethnic group their culture to value." — Pastor Arcesio, Guahibo People Group^6
Notable- Used by translation organizations in 140+ countries to create apps for 1,960 languages^3
- Over 65 million installs across 2,500+ published apps^3
- Apps work completely offline — shareable via Bluetooth, microSD, or app stores^2
- Built-in AI Assistant with configurable, biblically-grounded system prompts (added v12.0, now on Android and iOS)^3
- Supports complex scripts via SIL's Non-Roman Script Initiative and GeckoView font rendering^2
- Includes Scriptoria service for publishing apps to Google Play and Apple App Store^1
- Open-source PWA template actively maintained on GitHub (sillsdev/appbuilder-pwa)^7
- Development started in Mali (2014); now maintained by a globally distributed team at SIL^4
- Featured in Lausanne Global Analysis for the Uzbek Bible app's impact in Central Asia^8
- SIL Global: faith-based nonprofit serving language communities since 1934; member of Forum of Bible Agencies International and Wycliffe Global Alliance^4
Platform: Windows, macOS (Intel + Apple Silicon), Linux (desktop tool) → builds Android, iOS, and PWA apps Pricing: Free
