# pttrN for drummers vs 421Grid

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.

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.

## The numbers

| Metric | pttrN for drummers | 421Grid |
| --- | --- | --- |
| Price | $4.99 | **$1.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pttrn-for-drummers/id1217383517/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 27 MB | 4 MB |
| Requires iOS | **12** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Didier Ottaviani](https://appshunter.io/developer/1068488429) | [N. Wheeler](https://appshunter.io/developer/312350021) |

## What reviewers say

### pttrN for drummers

[App page](https://appshunter.io/ios/app/pttrn-for-drummers/id1217383517)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 421Grid

[App page](https://appshunter.io/ios/app/421grid/id1598461370)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is pttrN for drummers free?

pttrN for drummers costs $4.99, with no in-app purchases.

### Is 421Grid free?

421Grid costs $1.99, with no in-app purchases.

### Do pttrN for drummers or 421Grid have ads?

Neither pttrN for drummers nor 421Grid shows ads.

### Which is updated more often, pttrN for drummers or 421Grid?

pttrN for drummers ships an update every 7 months, and 421Grid every 3 months. Most recently, pttrN for drummers was updated on September 21, 2026 and 421Grid on September 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*