Proelia is a multi-game system encounter tracker for pen-and-paper RPGs. It allows you to create "prepared" encounters for later use, and then run them any number of times with the click of a button. A group can be created from an encounter's participants, and then re-used in other encounters. Each encounter can display a map that allows you to track positioning of participants, especially in relation to regions, so you can tell if someone is standing too close to a fire, or is subject to an aura or other environmental effect. A color and marker text can be set for each participant in the encounter, so you can quickly find them on the map. A variety of RPGs are supported through a plugin system that allows new systems to be added.
Horology is a date/time calculator that supports all the built-in calendars for iOS, and allows you to perform various types of calculations or conversions of date and time values. You can find the difference between two date/time values, calculate a date/time by inputting a start date/time and add or subtract some arbitrary amount, or convert a value from one unit type to another (e.g., years to seconds).