Koine Advanced Indexer

Search the language, not just the letters.

A complete offline library of the earliest Greek Christian literature — the Septuagint, the New Testament, the Apostolic Fathers, and the second-century Apologists, 110 books — with the most capable Koine search you can carry: dictionary forms, grammar, phrases, and word proximity, all working together, all without a network.


A SEARCH ENGINE BUILT FOR GREEK

Accents and breathings are ignored by default, so γυναι finds γυναῖκα. From there:

• DICTIONARY FORM — search ἀγαπάω and gather every inflection at once.
• EXACT FORM — @ἠγάπησεν searches that one inflected form and nothing else.
• GRAMMAR — +aor +subj +act filters by tense, mood, voice, case, person, number. Grammar alone works too: +aor +imp, with no word at all, lists every aorist imperative in the library.
• PHRASES — "ἐν ἀρχῇ" finds it verbatim and in order, even across a verse boundary. Filter one word inside it: "ἐν ἀρχῇ+dat".
• PROXIMITY — λόγος 3 θεός finds the two within three words of each other. Add a direction (>3 after, ~<3 before), or chain a third word through: α ~2 β ~3 γ.
• WILDCARDS — θεο* for every word beginning θεο-, ἀγα?ω for a single letter.
• COMBINE — words side by side to narrow, "or" to widen, -κύριος to subtract. The pieces nest: θεός -λέγω +aor allows a present λέγω but not an aorist.
• EXACT ACCENTS — #strict, for when a breathing or an accent is the whole point.
• LATIN LETTERS — logos finds λόγος, theo* works like θεο*. Or type Greek with the built-in keyboard; there is nothing to install.

Scope any search to whole corpora or single divisions — only the Gospels, only the poetic books of the Septuagint, any combination — with a default scope in Settings. Results are grouped by book in the library's own order, a count beside each, and every matching word highlighted, not just the first in a verse. Tap a hit to open the reader there; hold a word while reading to send it straight back to search.


THE LIBRARY — 110 BOOKS, FOUR CORPORA, OLDEST FIRST

• The complete Septuagint, Rahlfs's edition of 1935, with the deuterocanonical books and the double texts — Judges and Daniel each in both Greek forms.
• The Greek New Testament, the SBL edition.
• The Apostolic Fathers in Lake's text: Clement, Ignatius, Polycarp, the Didache, Barnabas, Diognetus, the Shepherd of Hermas, the martyrdoms.
• The second-century Apologists: Justin Martyr, Tatian, Athenagoras, Theophilus.

Books are grouped by literature rather than by any tradition's canon boundary.


TAP ANY WORD

Its English meaning, dictionary form, part of speech, and full parse — for ἠγάπησεν: "to love", ἀγαπάω, verb, aorist active indicative 3rd singular. Every word of the Septuagint and New Testament is analysed from the scholarly editions of each (CATSS, MorphGNT); the Fathers and Apologists are machine-tagged, which the card says plainly.


ENGLISH BESIDE THE GREEK

Split the reader in two, Greek above and English below, kept verse-in-step as either pane scrolls: Brenton's Septuagint of 1851, and the Lexham English Bible for the New Testament, translated from the same SBL text shown here.


PARALLEL PASSAGES

A ∥ sign marks every Gospel passage with parallels. Tap the verse number to jump, or open the synopsis to read the accounts in columns, one per Gospel, on one continuous scroll.


BUILT FOR READING

The contents reach any chapter and verse, chapters turn with a swipe, verse numbers run inline as in print. Pinch to size the text; choose line spacing and a light or dark theme.


OFFLINE, PRIVATE, FREE TO READ

Everything ships inside the app — no download, no account, no sign-in, no ads. Reading, searching and parsing need no network, and what you read and search for is never sent anywhere. Reading the whole library is free and unlimited. Advanced search comes with 25 free searches, after which one purchase unlocks it for good. No subscription.

Every text, dataset and typeface is credited in full, with its licence, in the app.