Gauges toolbox: dB meter with frequency spectrum; Distance and height meter; Speed gun (speed meter); Stopwatch; Metal detector (stud finder); Vibration meter; Luminosity meter; Color sensor; Cardiograph (heart rate meter); Speedometer. Other handy tool kit: Unit converter: Also includes currency converter; Code reader: QR code and bar code; Accelerometer; Night vision; Dog whistle; Metronome; Pitch tuner; Counter; Random generator; Pedometer; Body mass index; Period tracker; Translator. Free kit with advertisement, optional removal with paid upgrade.