Anki

Anki is a Spaced Repetition Software (SRS) programme that is used to assist in learning and memorising information. Spaced repetition is a study technique based on the principle that information is best remembered when reviewed at specific and progressively longer intervals over time.
Anki allows users to create study cards containing questions, answers or any other type of information they wish to remember. The programme then uses algorithms to display these flashcards at specific times, based on when the user last reviewed them and the extent to which they were able to recall the information correctly.
One of the advantages of Anki is that it is highly customisable, allowing users to tailor the programme to their specific learning needs. In addition, Anki is widely used in a variety of fields, including language learning, medicine, mathematics and many more.

Features

Anki is known for its "freemium" business model, which means that it offers a free basic version with most of the essential features, while some advanced features are available in the paid version, called AnkiMobile on mobile devices.
Here are some of the features that are available in the free version of Anki:
• Card creation: You can create flashcards with text, images, audio and video.
• Spaced repetition: Anki's spaced repetition algorithm is available in the free version and is the central feature that helps you schedule the repetition of flashcards at optimal intervals to improve retention.
• Customisation: You can customise your cards and study decks to suit your needs.
• Cloud synchronisation: You can synchronise your data between devices using a free AnkiWeb account.
• Cross-platform compatibility: Anki is available on Windows, macOS, Linux, Android and iOS for free.
However, some advanced features are available only in the paid version (AnkiMobile), such as
• Unlimited decks: In the free version, you are limited to a maximum number of decks you can create.
• Offline study mode on mobile devices: The free version requires an internet connection to study on mobile devices, while the paid version allows offline study.
• Custom field editing: In the free version, you are limited to a maximum number of fields per card.
• These are just some of the differences between the free version and the paid version of Anki. Overall, the free version offers enough features for most users, while the paid version provides additional features for those who want a more advanced experience.