Fret Calculator by dhagz is a useful utility and tool for musicians who want to accurately calculate fret spacing. This Android app can calculate the distance from the nut and previous frets, provided that you input the scale length of your instrument. The app is free and comes with a display unit, allowing you to choose between inches and centimeters.

Fret Calculator is user-friendly and easy to use. You simply input the scale length of your instrument, and the app will calculate the distance between the frets. Additionally, the app allows you to share your calculations via message, email, or other sharing platforms.

Overall, Fret Calculator is a valuable tool for any musician who wants to accurately calculate fret spacing. The app is free, easy to use, and comes with a display unit and sharing options, making it a must-have for any musician's utility and tool collection.