DiceKit
A Swift package for simulating dice both real and unreal. It allows the creation of dice with any number of sides, collections of dice, weighted dice, and custom dice. It additionally supports multiple ways to roll dice and calculating the probabilities of specific results.
RooScout
An iOS and macOS app combination designed for scouting other FRC teams while at competitions. It can be installed on multiple "scout" iOS devices, which sync their data to the "base" macOS device, from where the data can be exported. Currently in beta.
Custom Die Roller
This app is an easy yet powerful way to roll virtual dice. It supports multiple dice, drag & drop, probability calculation and visualization, and dice notation editing. Free on the iOS App Store, with no accounts necessary and no data collected.