Theological Timeline (or thTimeline for short) is a free app for iPhone, iPad and macOS to create and manage chronologies, that is, lists of people, documents and events that are relevant to a given discipline. This app was designed as a teaching tool for students of theological courses, but it can be used to support study and research in any field, especially historical.
Each entry in the chronology, whether it relates to a person, a document or an event, consists of a name / title, a date of birth / initial and a date of death / final, with the possibility of indicating whether they are uncertain, a places of birth and death or where an event took place, some notes (an unformatted text) and various tags, which place the item within one or more historical periods or research fields. Items can be filtered by name / title field, place field and tags. The app shows the list of tags already used, so that the user can enter in the filter those that are actually present.
The items are automatically synchronized on iCloud between the various devices associated with the same Apple account. However, the app allows to export items to a text file, as well as import items contained in an exported file. In this way it's possible to create and share chronologies with other people. For example, a professor may produce a timeline and share it with his or her students. They will be able to make any possible changes, integrating it with personal notes, and share it in turn with other students.
The need to be able to import and export items to foster mutual collaboration requires that each of these entries cannot be linked to others. In the case of a partial data export, in fact, the link between different items might be broken, because some of them could not be present in the exported file. It is therefore necessary to use appropriately the tags to gather the items within various research areas, whether they are chronological (Middle Ages, Modern Ages, etc.) or thematic.
The app allows to manage chronological indications from 1 C.E. onward. It's not possible to track previous years.