# Harmonics Practice vs Spectrum

The clearest difference is in-app purchases: Harmonics Practice at none against Spectrum's 1. Harmonics Practice also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Spectrum sells 1 one-off in-app purchase. Harmonics Practice asks for nothing beyond the download.

## The numbers

| Metric | Harmonics Practice | Spectrum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 8 days |
| Size | 31 MB | 89 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tarmo Johannes](https://appshunter.io/developer/1131081454) | [SEONYONG LEE](https://appshunter.io/developer/6775892940) |

## What reviewers say

### Harmonics Practice

[App page](https://appshunter.io/ios/app/harmonics-practice/id6748588377)

**Features:** macOS Compatibility

**In-app purchases:** none


### Spectrum

[App page](https://appshunter.io/ios/app/spectrum-audio-analyzer/id6787894411)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is Harmonics Practice free?

Harmonics Practice is free to download, with no in-app purchases.

### Is Spectrum free?

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

### Do Harmonics Practice or Spectrum have ads?

Spectrum shows ads; Harmonics Practice does not.

---

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