Last updated: 13 November 2026.

Credits and licences

KartuLearn is made by Nathan Brosnan, with the help of the people, tools and projects below. Thank you to all of them.

The course

The course's text, exercises and readings, the map and its artwork, and the cast of characters are KartuLearn's own work.

The outlines of Georgia's regions on the map are based on Natural Earth, which is in the public domain.

The voices

The voices are AI-generated (synthetic), made with ElevenLabs on a paid plan that allows commercial use. Four voices read the four people in the course.

The letters of the alphabet are not synthetic: a native Georgian speaker recorded them, and they are used with her permission.

The handwriting

The strokes that show how each letter is written are drawn by KartuLearn from the centre lines of Noto Sans Georgian, copyright 2022 The Noto Project Authors (github.com/notofonts/georgian), which is licensed under the SIL Open Font License, Version 1.1. The order and direction of the pen follow the Mkhedruli handwriting chart on Wikimedia Commons, which its author released into the public domain, and a native writer's hand.

The app shows text in your device's built-in fonts.

The review scheduler

Reviews are scheduled with FSRS, the Free Spaced Repetition Scheduler, by Open Spaced Repetition. The app's scheduler is our Swift translation of py-fsrs. Copyright (c) 2022 Open Spaced Repetition. github.com/open-spaced-repetition/py-fsrs

py-fsrs is licensed under the MIT License:

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Software

The app uses only Apple's own frameworks, and no third-party libraries apart from the FSRS code above.