Practice tools for metal guitar
Three tools will improve your practice more than a new guitar: a metronome you'll actually use, a way to loop one or two bars, and a way to record yourself. Your phone can do all three.
Metronome
Gives you a fixed tempo so you can measure progress and hear when you rush. Look for subdivisions (so you can hear 8ths or 16ths, not just quarter notes), tap tempo, and quick BPM changes. Used with the 1-bar routine, it tells you when to speed up.
Looper
Record a riff and solo over it, or loop one hard bar over and over. Look for a loop length of one to four bars and easy start/stop. A looper pedal, a DAW, or a free app all work.
Recorder
Your ears lie while you're playing. A 20-second recording shows you ghost upstrokes, uneven chugs and rushed string changes instantly. A phone is plenty.
What these tools can't do
A metronome can't hear your palm mute. You still have to listen critically, and slow down when something's off.
Alternatives
Drum machine apps, the click in any recording software, or a teacher in the room.
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