Really a must-have: this chromatic mandolin tuner is very fast, accurate and recognizes all strings using the built-in mic! Easy and perfect fine-tuning for standard mandolins. This app is developed by a musician and electrical engineer, thus it combines high usability and cutting-edge signal processing. Simple Mandolin Tuner is easy to use and provides an aesthetic user interface. Simple Mandolin Tuner is configured also for the iPhone X. Features: + Default mandolin: G3-D4-A4-E5 tuning + Tone accuracy: +/- 1.0 cents + Large frequency range (22 Hz to 1000 Hz). + Gauge view of the detected tone (semitone) and octave. + Tuning by ear. + Free user support. + Developed for the iPhone and iPad. In-App-Purchase: + Unlimited duration of reference tone for each string (aiff-sound played in a loop) + String Protection: warning when tuning is out of range (prevents over-tightening of mandolin strings) + Calibration: 430 – 500 Hz (0.1 Hz-steps) + Sensitivity: choose between 5 different values (from very low to very high) + Display of exact frequency (in Hz). + Spectral view of the input signal (FFT – visualization of overtones). + Time-domain view of the input signal (autocorrelation). ------------- MORE: In the case that you experience crashes (or other inconveniences) with this app, please contact me (before you give a low rating to this app) - you may use the following contact form: http://www.simpleukuleletuner.com/support.html where you can describe the issue. Thanks in advance!