pttrN for drummers vs 421Grid
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
pttrN for drummers
This app generates and plays an infinite variety of one-bar drum grooves in various time signatures. Customize snare placement, note density, and add a virtual bass player for a complete rhythmic experience.
- Random pattern generation
- Multiple time signatures (4/4, 3/4, 5/4, 12/8, 7/8)
- Customizable snare placement
- Adjustable note density
- Virtual bass player
- Auto-change for continuous grooves
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« pttrN for drummers » is a random pattern generator. It creates and plays an infinite number of one bar grooves in 4/4, 3/4, 5/4, 12/8 and 7/8. Choose your Hi-Hat figure, pttrN takes care of everything else ! Settings : - You can add a snare drum on 2 and 4, or 3. In « FREE » mode, the snare placement is random. - You can choose the maximum number of notes in a row (2 by default). - Choose the level : « EASY » mode generates 8th note grooves. MEDIUM, NORMAL and HARD modes generate 16th note grooves with different note density in one bar. (« NORMAL » means that the probability for a snare, a kick or a silence is equal). PttrN plays the patterns, and for even more FUN, you can have a virtual bass player ! Set your own mix between the metronome, the drums sound and the bass. Don’t stop drumming : Use the AUTO-CHANGE and set the number of bars before pttrN generates a new groove ! Let’s groove !!
421Grid
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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.
Screenshots
Verdict
The clearest difference is price: 421Grid at $1.99 against pttrN for drummers's $4.99. 421Grid also leads on update cadence (every 3 months vs every 7 months). pttrN for drummers's advantage is iOS requirement (12 vs 18.0). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
pttrN for drummers costs $4.99 and 421Grid $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
pttrN for drummers ships an update every 7 months, 421Grid every 3 months. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.
| Parameter | pttrN for drummers | 421Grid |
|---|---|---|
| Price | $4.99 | $1.99 — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 7 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12 — better | 18.0 |
| Further details — not scored | ||
| Size | 27 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Didier Ottaviani | N. Wheeler |
In-app purchases
pttrN for drummers
No in-app purchases
421Grid
No in-app purchases
Questions
Is pttrN for drummers free?
Is 421Grid free?
Do pttrN for drummers or 421Grid have ads?
Which is updated more often, pttrN for drummers or 421Grid?
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