Mobile offline-first Bible study

God's word. Read. Study. Deep dive.
Anywhere.

multiple translations, interlinear texts, lexicons, dictionaries, commentaries, encyclopedias, books, and hymns — all offline, all in one app.

Download more from our growing library.

65+ Translations 65+ Commentaries 6 Encyclopedias Dictionaries Lexicons 295+ Books 20+ Languages

Get for iOS Get for Android

Offline by design.

Every Bible, lexicon, commentary, and cross-reference is bundled on-device. Search, bookmark, and take notes on a plane, in the woods, or anywhere signal doesn't reach.

Nine bundled translations, side by side.

KJV, BSB, NET, LEB, WEB, ULT, UST, OHGB, and TRLIT are built in. Read up to four translations in parallel, or compare any verse across every installed translation with one tap. Download dozens more from the library.

Deep study tools.

Strong's numbers, verse-level cross-references, parallel display, and interlinear Hebrew & Greek. Tap any word to see its morphology, gloss, and lexicon entry.

Your study, your device.

Bookmarks, highlights, and notes stay on your phone. Export anytime. Your data never leaves unless you ask it to.

Hymn lyrics included.

A built-in library of over 2,000 hymns, available offline alongside your Bible study — no extra app required.

Add more resources anytime.

Install additional Bibles, commentaries, and books on demand without leaving the app. New resources stream in straight from the community — no rebuild, no re-install.

66 Bibles · 69 commentaries · 6 encyclopedias · 295 books · plus dictionaries and more available to install.

See the full feature list

Languages

Study in your language.

Theodia's interface is available in 27 languages. The Bible translation you read is independent of the UI language, so you can read in one language while the menus stay in another — and Hebrew or Arabic text flips to right-to-left automatically.

27 interface languages

English
Simplified Chinese
Traditional Chinese
Spanish
Hindi
Arabic
Portuguese
Russian
German
French
Italian
Polish
Ukrainian
Romanian
Korean
Filipino
Vietnamese
Japanese
Indonesian
Dutch
Hebrew
Thai
Turkish
Greek
Czech
Swedish
Danish

See all personalization options

Pricing

Buy once, use fully.

One purchase unlocks everything. No subscriptions, no in-app purchases, no ads, and no donation prompts — just the full app, for life.

One-time purchase for full access
Free upgrades for life
No monthly fees, ever
No in-app purchases
Nothing requires unlocking for a fee
No ads
No requests for donations

Privacy

We don't collect your data.

No account system. No telemetry, analytics, or crash reporting. No advertising ID. The only network endpoints are the ones you configure — and we never see what flows through them. Your reading, notes, and bookmarks stay on your device.

Read the full policy

Theophilus AI

Meet Theophilus.

An optional AI study assistant that can read scripture, look up word definitions, surface cross-references, and answer questions — using any OpenAI-compatible endpoint you configure.

Learn more about Theophilus

Carry a library in your pocket.