PeakTracker will keep track of your peak MMR across all ranked game-modes and update every time you set a new peak. Your peak can be manually set through the plugin menu, otherwise your initial peak will be set to your current MMR for each ranked game-mode.
Peak MMR values can be hooked into OBS and used in your overlay and all information related to your new peak is exported to a CSV file which you can use to track your progression or use in your own projects!
More details are available on the Github page!