421Grid vs GORILLA DRUM

Turn Practice into Progress. Inspiration into Execution. Whether you’re a drumline veteran, music educator, or aspiring percussionist, this app is your personal drumming lab—designed to help you experiment, customize, and level up your chops with precision. Built for Rudimental Drummers Who Want More Forget flipping through old notebooks or searching YouTube for exercises you can’t customize. With this app, you can build your own practice grids, apply the legendary 4-2-1 structure, and modify exercises using accents, subdivisions (triplets, fivelets, sixteenths), or even alternate stickings—all with just a few taps. Customize Everything Shift the beat. Change the direction. Reverse your sticking. Or layer complexity to push your brain and hands to the limit. Every exercise becomes your own. Designed for Students and Educators Music teachers: Quickly generate custom warmups or technique builders for your drumline. Students: Practice smarter, not just harder—with structured routines and unlimited variations. Why Drummers Are Calling This a Game-Changer: • Reinforces fundamentals through creative repetition • Encourages daily practice through customization and challenge • Perfect for drumline auditions, solo prep, or just sharpening your hands • No internet? No problem. Train anywhere you take your sticks. Ready to Break Through Your Plateaus? This isn’t just another drumming app. It’s your creative practice engine, your daily workout, and your edge over the competition. Download now and redefine your rudimental journey.

【Practice】 ・Includes ready-to-play practice phrases such as 8-beat, 16-beat, and rudiments ・Easily adjust the tempo (BPM) and number of repetitions during practice ・Set the tempo (BPM) to gradually increase as you practice ・Choose which parts to hear, such as only the bass drum or snare, so you can focus on areas you want to improve 【Create】 ・Use the piano roll to enter individual drum sounds such as snare and bass drum ・Combine preset phrases to create your own original practice phrases 【Share】 ・Post the practice phrases you create ・GORILLAS members can preview phrases posted by other users and download their favorites for practice Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/