Bible Commentary Apps to Understand God's Word

Relight

A free Reformed theology and Bible study web app by David and Sarah Mikucki, featuring in-line commentaries (including Calvin, Henry, Gill, Poole, and Hodge), confessions, catechisms, Greek and Hebrew text with morphology, word studies, and backlinks — all from a curated library of historically Reformed resources.

Enduring Word

Free verse-by-verse Bible commentary on every book of Scripture by Pastor David Guzik. Over 10,000 pages blending pastoral warmth with historical theologians like Spurgeon, used by 10,000+ daily users across 150 countries. Now also a Thomas Nelson Study Bible (NKJV) available in four editions, and the website features a new AI-powered search across the full commentary. Available in 15+ languages via web, iOS, and Android — fully donor-funded with zero ads or data tracking.

BibleRef

A free, comprehensive verse-by-verse Bible commentary from Got Questions Ministries — seven translations side by side, cross-references, and jargon-free explanations. Recently updated app (v1.2.1) with verse popup, new search tools, and home screen redesign. Part of the unified GQM.one network. Available on iOS, Android, and web.

AndBible

A free, open-source Android Bible study app with 1,500+ documents in 700+ languages, Strong's concordance, split-screen commentary, an optional AI-powered study assistant (Gemini/Claude/OpenRouter), reading progress tracking, and community-driven development under Sykerö Software — no ads, no cost, no compromise. An iOS version is in development.

Best Commentaries

Best Commentaries aggregates Bible commentary reviews and ratings from scholars, journals, and users into a searchable database with a transparent scoring algorithm. Now available in six languages, it helps pastors, seminary students, and laypeople find the right commentary for any book of the Bible.

Xiphos

Xiphos is a free, open-source Bible study application for Linux and Windows built on The SWORD Project, offering tabbed reading, fast indexed search, Strong's numbers, pseudo-interlinear display, commentaries, dictionaries, and access to 400+ Bible modules in 150+ languages. Actively developed since 2000 with 41 contributors, 254 GitHub stars, and ongoing commits as of May 2026.

Aura Bible

Aura is an AI-powered Bible study and prayer app grounded in Reformed theology, offering verse-by-verse exegesis with 840,000+ cross-references, personalized devotionals, small group fellowship, Scripture memory tools, eight Bible translations, and a conversational prayer guide to help Christians grow deeper in faith.

Ecclesia Bible

Ecclesia Bible is a free iOS Bible study app offering original Hebrew/Greek source analysis, verse correlations, contextual illumination, translational variations, and interpolated-text notes. Built by born-again developer Albert Renshaw, AI was used only on the dev side to organize its study data — the app contains no live AI features. Actively maintained as of June 2026.

Patristic Nectar

A free Orthodox Christian app offering hundreds of hours of theological lectures, daily Synaxarion readings, Scripture, catechism, audiobooks, and the Arena podcast — from Fr. Josiah Trenham's non-profit ministry with a 293K-subscriber YouTube channel and a content catalog of 3,484+ items.

Ezra Bible App

A free, open-source Bible study app focused on topical study through keyword tagging, verse-based notes, Strong's Dictionary with morphological analysis, and Vine's Expository Dictionary — available on Windows, macOS, Linux, Android, iOS, and Chromebooks with hundreds of translations via SWORD modules, with automatic commentary translation in development.

inWORD Bible

A feature-rich Bible study app with 70,000+ resources — commentaries, interlinears, maps, audio, and video — all linked to individual verses in a clean, uncluttered interface. Available on iOS, Android, and Windows with an affordable annual subscription.

Bible Study Tools

One of the largest free online Bible study platforms — 100+ translations in multiple languages, commentaries from Matthew Henry and others, concordances, dictionaries, lexicons, reading plans, parallel Bible, audio Bible, and topical verse collections. iOS app with parallel reading and personalized homepage (last updated July 2025). Part of Salem Web Network. In May 2026, Salem Media Group announced it will be acquired by WaterStone (The Christian Community Foundation), going private under a Christian foundation committed to Salem's mission — expected to close August 2026. PLUS subscription for ad-free study.

The Bible with Nicky and Pippa

A free daily Bible reading plan from the pioneers of Alpha that guides you through the entire Bible in 365 days with warm commentary, audio narration by David Suchet, and three format options to fit any schedule — used by over 4.5 million people in 160 countries. Also offers a 30 Days video series for a shorter introduction to Scripture, a built-in search feature for finding specific passages and themes, and full availability on the YouVersion Bible App.

Biblos

Biblos is a free, open-source semantic Bible search tool powered by BGE-large-en-v1.5 embeddings. Find passages by meaning, study Greek text with the Dodson Lexicon, read Church Fathers commentary, and follow a daily reading plan — all free with no sign-up.

TheoSumma

A Scripture-rooted AI companion from Jordan that lets Christians converse with AI personas of history's greatest theologians, study the Bible verse-by-verse, and explore systematic theology across Catholic, Orthodox, and Protestant traditions — with every answer cited to primary sources.

Bible Portal

A free Bible study platform from The Christian Post offering 50+ classic commentaries, structured Bible studies, daily devotionals from trusted authors, sermon libraries, curated teaching videos, and 10,000+ shareable verse images — available on web, iOS, and Android. Website is actively maintained with daily content; mobile apps have not been updated since December 2021.

Faithlife Audio

Browse and purchase Christian audiobooks, seminary-level courses, sermons, and audio Bibles at audio.faithlife.com, then listen through the Logos Bible app — built by the makers of Logos Bible Software with 500+ publisher partners, an AI-powered Study Assistant, and a free monthly book through the Logos ecosystem.

Logos Bible Study App

The world's leading Bible study platform — 30+ years of development, 250,000+ titles, Greek/Hebrew word study, side-by-side commentaries, and an AI-powered Study Assistant now built into prebuilt study layouts. Co-founded in 1992 by Bob Pritchett, Kiernon Reiniger, and Dale Pritchett; led today by CEO Chris Migura (Pritchett is Executive Chairman), with Baker Publishing Group having acquired Lexham Press in 2025. The June 2026 update added a mobile reading-plan builder and in-layout Study Assistant. Over 6 million users; free tier with 40+ books and an optional Premium subscription.

Blue Letter Bible

Free Bible study platform with 30+ translations, Hebrew/Greek lexicons, interlinear, 8,000+ commentaries from 40+ authors, cross-references linked to every verse, and 1.5M+ integrated sermons via SermonAudio. Sandy Adams audio commentaries (every book) added Apr 2026. NLT available for free offline mobile download via Tyndale partnership. Founded 1996, serving nearly 10M annual users via web, iOS, and Android. ECFA accredited 501(c)(3) nonprofit.

Catena Bible and Commentaries

Free Bible app with over 70,000 verse-by-verse commentaries from hundreds of early church fathers. Built by Coptic Orthodox volunteers with experience from Google and Microsoft, Catena chains together patristic wisdom for Christians of every tradition. Available on iOS and web.

LifeBible

A content-rich Bible study app with 40+ free translations, 150+ Study Bibles and commentaries, AI-powered verse search, and unique features like Explain (instant verse insights) and TouchPoints (500+ life-topic Scripture answers with video). Built by Tecarta in Palo Alto, loved by over 2 million users across iOS, Android, and web.

Biblify.ai

Biblify.ai is a free web-based Bible reading companion that uses AI to provide verse-by-verse explanations and answer your questions as you read — built by a Christian software engineer with pastoral input and growing organically worldwide.

Babayetu Bible & Commentary

A nonprofit, community-driven web platform for reading and writing verse-by-verse Bible commentary, named after the Swahili words for "Our Father." The site appears to be inactive.

The Study Bible

A free Bible study app from Grace to You featuring ESV, NASB, and KJV texts alongside John MacArthur's 25,000 study notes, 3,000+ sermons, daily devotionals, and an audio Bible — actively maintained under Matt MacArthur's leadership with updates shipping through May 2026 and ratings surging to 4.9 on iOS and 4.7 on Android.

Lumenology

Lumenology is an AI-powered Bible study platform offering eight study lenses and a cited Research Assistant that draws from user-selected trusted sources like Blue Letter Bible, BibleHub, and Got Questions — designed for pastors, group leaders, and individual believers seeking Logos-level depth without the library.