Terms of use

Your use of Lucubra is governed by Apple’s Licensed Application End User License Agreement (the Standard EULA). These terms add the details of Lucubra Pro. Effective 26 October 2026.

Lucubra is free to download. Free: Units 1 and 2 (letters, sounds, the cases, the first two declensions and the verb “to be”, with their lessons, practice and readings), six fables of Phaedrus, the first chapter of John in the Vulgate, two games (Numerals and Forum Pairs), daily review, and the dictionary with word cards everywhere. Lucubra Pro opens every topic, the whole library and every game.

• Lucubra Pro weekly: $2.99 a week.
• Lucubra Pro monthly: $7.99 a month.
• Lucubra Pro annual: $39.99 a year, with a one-week free trial for new subscribers.
• Lucubra Pro lifetime: $79.99, a single purchase that never expires.

These are US prices. Local prices are set by the App Store and shown in the app before you buy.

• Payment is charged to your Apple Account when you confirm the purchase, or when the free trial ends.
• A subscription renews automatically at the same length and price unless it is cancelled at least 24 hours before the end of the current period. Your account is charged for the renewal within the 24 hours before the period ends.
• Manage or cancel subscriptions in your Apple Account settings. Cancelling stops the next renewal; Pro stays active until the period ends.
• Any unused part of a free trial is forfeited when you buy a subscription.
• Payments and refunds are handled by Apple under its terms; refunds are requested at reportaproblem.apple.com.

Lucubra’s lessons, exercises and graded readings are © 2026 Burak Gökyüz and shared under Creative Commons Attribution-ShareAlike 4.0. The texts and the dictionary come from open scholarship:

• Perseus Digital Library, Tufts University: the Latin texts and their public-domain English translations, and the digital Lewis & Short (CC BY-SA 4.0);
• C. T. Lewis and C. Short, A Latin Dictionary (1879), as digitized by Perseus (CC BY-SA 4.0);
• Wiktionary, as extracted by Kaikki: forms, meanings, tables and vowel lengths (CC BY-SA 4.0);
• Whitaker’s Words: meanings of rarer words (free for any use);
• the Perseus Latin Dependency Treebank: hand-annotated texts used to choose the likeliest reading of ambiguous forms (CC BY-SA).

The app’s dictionary and annotated texts, derived from these, are shared under the same licence. Every source is credited in the app under Me → Settings → Sources & credits.

Alegreya (The Alegreya Project Authors) and Cinzel (The Cinzel Project Authors) are used under the SIL Open Font License 1.1, in the app and on this website. Licences: Alegreya, Cinzel.

Forms, parses and tables are checked against the morphology database, and the lessons are written with care, but Lucubra is a learning tool and can contain mistakes. Please report any to brkgkyz@gmail.com.

Burak Gökyüz, brkgkyz@gmail.com.