# SessionBand Jazz 4 vs Altered#

The clearest difference is price: Altered# at Free against SessionBand Jazz 4's $5.99. Altered# also leads on update cadence (every 5 days vs every 6 months). SessionBand Jazz 4's advantage is iOS requirement (12.0 vs 15.4). On ads, in-app purchases and device support there is nothing between them.

Altered# is free to download; SessionBand Jazz 4 costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SessionBand Jazz 4 ships an update every 6 months, Altered# every 5 days. The most recent releases landed on September 27, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | SessionBand Jazz 4 | Altered# |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[4.6 (28 ratings)](https://appshunter.io/ios/app/sessionband-jazz-4/id1534488108/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | 63.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 days** |
| Monetization | Paid | — |
| Size | 688 MB | 10 MB |
| Requires iOS | **12.0** | 15.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UK Music Apps Ltd](https://appshunter.io/developer/579320222) | [Luca Rocchi](https://appshunter.io/developer/548616709) |

## What reviewers say

### SessionBand Jazz 4

[App page](https://appshunter.io/ios/app/sessionband-jazz-4/id1534488108)

Create professional-quality jazz music with royalty-free loops performed by renowned jazz musicians. Easily build tracks, transpose, and export your creations. Ideal for songwriters and musicians looking to jam or practice.

**Highlights:** Chord-based loops by top jazz musicians, 150+ downloadable jazz standards, Instant PDF chord sheets, Track Builder for faster workflow, 8 jazz styles and 20 drum grooves, Mute instrument channels, Copy to other music apps

**In-app purchases:** none


### Altered#

[App page](https://appshunter.io/ios/app/altered/id1639197819)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SessionBand Jazz 4 free?

SessionBand Jazz 4 costs $5.99, with no in-app purchases.

### Is Altered# free?

Altered# is free to download, with no in-app purchases.

### Do SessionBand Jazz 4 or Altered# have ads?

Neither SessionBand Jazz 4 nor Altered# shows ads.

### Which is updated more often, SessionBand Jazz 4 or Altered#?

SessionBand Jazz 4 ships an update every 6 months, and Altered# every 5 days. Most recently, SessionBand Jazz 4 was updated on September 27, 2026 and Altered# on May 16, 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.*