# Audition Vocal Toolbox vs Siren's Spellbook

The clearest difference is ads: Siren's Spellbook at none against Audition Vocal Toolbox's shown. Siren's Spellbook also leads on update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Audition Vocal Toolbox sells 2 in-app purchases, starting at $3.99 per month and Siren's Spellbook sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Audition Vocal Toolbox ships an update every 2 months, Siren's Spellbook every 2 weeks. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Audition Vocal Toolbox | Siren's Spellbook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/audition-vocal-toolbox/id1553653770/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 756 MB | 26 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [K.M MCNAUGHTON & D MUSIL](https://appshunter.io/developer/1553653772) | [Jordan Collin](https://appshunter.io/developer/6778770884) |

## What reviewers say

### Audition Vocal Toolbox

[App page](https://appshunter.io/ios/app/audition-vocal-toolbox/id1553653770)

This app offers vocal warm-ups, singing guidance, and music theory for singers of all levels. It includes targeted exercises, audition tips, and tools for understanding scales and keys, created by experienced vocal professionals.

**Highlights:** Categorized vocal warm-ups, Vocal range options, Pitch slider for warm-ups, Customizable playlists, Key Centre feature for ear training, Audition tips & tricks, Foundational music theory

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $3.99 | per month |
| Premium | $39.99 | per year |


### Siren's Spellbook

[App page](https://appshunter.io/ios/app/sirens-spellbook/id6778770762)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Siren’s Spellbook iPad Sheet Music | $14.99 | one-time |


## Frequently asked questions

### Is Audition Vocal Toolbox free?

Audition Vocal Toolbox is free to download, with in-app purchases available.

### Is Siren's Spellbook free?

Siren's Spellbook is free to download, with in-app purchases available.

### Do Audition Vocal Toolbox or Siren's Spellbook have ads?

Audition Vocal Toolbox shows ads; Siren's Spellbook does not.

### Which is updated more often, Audition Vocal Toolbox or Siren's Spellbook?

Audition Vocal Toolbox ships an update every 2 months, and Siren's Spellbook every 2 weeks. Most recently, Audition Vocal Toolbox was updated on October 10, 2026 and Siren's Spellbook on October 25, 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.*