The Smart Espresso Profiler is an easy to use tool to record and improve your espresso extractions. It gives all compatible espresso machines capabilities, which were only seen in the most advanced, state of the art devices. Imagine perfectly repeatable pressure- and flow profiling with a modified vintage lever machine, or a modern pump machine, with instant feedback.
The app needs an Acaia Lunar, or Acaia Pearl scale for flow profiling.
A pressure sensor for pressure profiling is available on the developer's website.