A plain stopwatch for free practice. Press Start and it counts up while you train; Log & reset banks those minutes into today's log.
Use it when you just want your practice time counted.
Trains speed to a deadline. Set a par time, press Start, and you'll get a cue to begin, then a second cue at the par time — beat the second cue.
Cue type (sound · visual · both · calm) is set in your Profile → Setup.
Trains true reaction, not rhythm. One cue fires at an unpredictable moment (3–8s) so you can't anticipate it.
Uses your Sensory cue setting (Profile → Setup).