# Song Builder vs SUS4 BPM

The clearest difference is in-app purchases: Song Builder at none against SUS4 BPM's 1. SUS4 BPM's advantage is device support (4 vs 1) and iOS requirement (16.0 vs 26.2). On price, update cadence and ads there is nothing between them.

Both are free to download. SUS4 BPM sells 1 in-app purchase, starting at $1.99 per month. Song Builder asks for nothing beyond the download.

Song Builder ships an update monthly, SUS4 BPM fortnightly. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Song Builder | SUS4 BPM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Size | 2 MB | 21 MB |
| Requires iOS | 26.2 | **16.0** |
| Devices | iPhone | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Julian Cambridge](https://appshunter.io/developer/1422381108) | [ThePaulSmith](https://appshunter.io/developer/319584506) |

## What reviewers say

### Song Builder

[App page](https://appshunter.io/ios/app/song-builder/id6759222239)

**Features:** macOS Compatibility

**In-app purchases:** none


### SUS4 BPM

[App page](https://appshunter.io/ios/app/sus4-bpm/id6777229864)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SUS4 BPM Pro Monthly | $1.99 | per month |


## Frequently asked questions

### Is Song Builder free?

Song Builder is free to download, with no in-app purchases.

### Is SUS4 BPM free?

SUS4 BPM is free to download, with in-app purchases available.

### Do Song Builder or SUS4 BPM have ads?

Neither Song Builder nor SUS4 BPM shows ads.

### Which is updated more often, Song Builder or SUS4 BPM?

Song Builder ships an update monthly, and SUS4 BPM fortnightly. Most recently, Song Builder was updated on October 2, 2026 and SUS4 BPM on October 6, 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.*