421Grid vs Peach Ear Trainer

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.

Peach is an ear-training app. It generates short exercises about pitch and timing, records your responses, and adjusts the difficulty over time. The training disciplines: • Compare Pitch — Two notes play; you judge which is higher. • Match Pitch — Adjust a slider until the note matches the reference. • Compare Intervals — An interval plays; you judge whether it is in tune. • Match Intervals — Adjust the second note to form the target interval. • Compare Timing — A short rhythmic pattern plays; you judge whether a note came early or late. The algorithm narrows the cent difference between notes as your responses become more accurate. In Compare Timing it narrows the timing offset the same way. The Profile screen shows per-discipline progress charts, summary statistics, and trend indicators. The home screen shows a small progress sparkline next to each discipline. Settings: • Equal Temperament (12-TET) and Just Intonation tuning systems. • MIDI input from a connected keyboard or controller (Bluetooth, USB, or Network MIDI). • Multiple selectable sounds: piano, strings, sine wave, and others. • CSV export and import of your training data. Peach runs on the device. There is no account, no sign-up, no analytics, and no tracking. Training data stays on the device unless you export it manually. The same app runs on iPhone and iPad. Data does not sync between devices automatically; transfer it via CSV export and import if you need to. There are no scores, levels, or streaks.