Do you take it with you when you travel? Can you plug headphones into it so you aren’t murdered by your family? What if you want to see what speed a song is can you tap out the beat on it? How about change the beat emphasis? Let’s say you want to work on your bluegrass chop and emphasize the offbeats? Digital metronomes have a lot of great features.
I’m on iPhone and use the app Tempo. Not sure if the have an equivalent.
I have an actual Wittner metronome that was on my grandparent's piano. I also have an app on my tablet called "Metronome" that mimics the Wittner, but with some of the extra features Mark mentioned. I think its from Keuwlsoft, who make a lot of neat audio apps. It seems to work fine, but I wouldn't know if its the "best." I only use a metronome to determine the tempo of a recording or performance, or to follow the marking on a piece.
Depends on what you want. For just basic set bpm and have it click to play along with, almost any will work.
But most apps have various other features; Choice of sound; Visual beat; Accented meter; complex poly rhythm;... to programmable to change after x bars... to having set list feature (for playing live)... syncing to other devices... to apps that have various training exercises, and/or do evaluation of your playing.
I use digital apps when traveling, but the click on the wooden Wittner always stands out distinguishable and I find it the best for metronome work. If your somewhat tech savvy, the digital apps have a lot of options.
Has always been my favorite. The only one I've found with a really useful visual "pendulum". The free version has everything I need.
Works great on my old iPhone and Android tablet, though one of my students has a (newer?) Android phone on which it isn't so good, as the pendulum moves very unevenly.
This is the same one I prefer! You can set up some interesting beats besides the standard tick tock tick tock and there are several sounds available. I too use the free app, but the paid version has quite a few bells and whistles if you need them.
Correction: My mechanical metronome is not a Wittner. Its a Maelzel style made in France by Paquet about 1920, according to the serial number. Still working after 100 years or so. For those who want a visual pendulum in a simple, free, ad free app with no permissions I still think the keuwlsoft one is a good choice, but I don't need most of the fancy stuff.