# Tritone Jazz vs 421Grid

The clearest difference is price: 421Grid at $1.99 against Tritone Jazz's $6.99. Tritone Jazz's advantage is update cadence (every 6 weeks vs every 3 months) and iOS requirement (11.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Tritone Jazz costs $6.99 and 421Grid $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Tritone Jazz ships an update every 6 weeks, 421Grid every 3 months. The most recent releases landed on July 5, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Tritone Jazz | 421Grid |
| --- | --- | --- |
| Price | $6.99 | **$1.99** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/tritone-jazz/id1439040353/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Paid | — |
| Size | 107 MB | 4 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jazz Soft, Inc.](https://appshunter.io/developer/1439040352) | [N. Wheeler](https://appshunter.io/developer/312350021) |

## What reviewers say

### Tritone Jazz

[App page](https://appshunter.io/ios/app/tritone-jazz/id1439040353)

This app provides piano, bass, and drum accompaniments for jazz improvisation practice. Users can input chords and even melodies or vocals, with the option to print charts including chords, notes, and lyrics. Song data is stored in a text format for easy sharing.

**Highlights:** Chord-based accompaniments, Piano, bass, and drum backing tracks, Melody and voice playback, Printable charts with chords, notes, and lyrics, Text-format song data for sharing

**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 Tritone Jazz free?

Tritone Jazz costs $6.99, with no in-app purchases.

### Is 421Grid free?

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

### Do Tritone Jazz or 421Grid have ads?

Neither Tritone Jazz nor 421Grid shows ads.

### Which is updated more often, Tritone Jazz or 421Grid?

Tritone Jazz ships an update every 6 weeks, and 421Grid every 3 months. Most recently, Tritone Jazz was updated on July 5, 2026 and 421Grid on September 17, 2026.

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