Mandolin Tuner by myrApps s.r.o. is a free Android application that provides a comprehensive solution for tuning your mandolin. This app offers alternate mandolin tunings such as Piccolo, Sopranino, Tenor, Alto, Octave, Mandola, and adjustable reference note frequency (A440).

One of the best features of this app is its automatic detection of tuned strings, which makes it easy for you to tune your mandolin accurately. Mandolin Tuner also provides the most common chords with fingerings and string tones as quick reference. Moreover, it includes various note naming schemes such as English (CDEFGAB), German (CDEFGAH), Latin (DoReMiFa...), which makes it easy for users to choose their preferred naming scheme.

Overall, Mandolin Tuner is an excellent app for mandolin players who need to tune their instrument in alternate tunings. Its user-friendly interface and automatic detection of tuned strings make it an essential tool for mandolin players of all levels.