In most cases - no. Most aftermarket systems interfere with Carista's communication with the vehicle and either slow it down or prevent it completely. This includes systems that integrate with the car (e.g. aftermarket engine management/tuning systems, LPG systems, integrated aftermarket radios/navigation systems, tire pressure gauges, engine data displays, aftermarket alarm systems, etc) and units that plug into the OBD port. Never use a splitter to plug in more than one device into the OBD port - it wasn't designed for that, and the devices will almost certainly interfere with each other.
If you do have such an aftermarket system in your car, just turn it off or disable it temporarily, while using Carista.