# MuPsych vs Spectrum

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

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

MuPsych ships an update every 2 weeks, Spectrum every 8 days. The most recent releases landed on October 13, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | MuPsych | Spectrum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Size | 48 MB | 89 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [William Randall](https://appshunter.io/developer/1771312630) | [SEONYONG LEE](https://appshunter.io/developer/6775892940) |

## What reviewers say

### MuPsych

[App page](https://appshunter.io/ios/app/mupsych/id6730127590)

**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 MuPsych free?

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

### Is Spectrum free?

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

### Do MuPsych or Spectrum have ads?

Spectrum shows ads; MuPsych does not.

### Which is updated more often, MuPsych or Spectrum?

MuPsych ships an update every 2 weeks, and Spectrum every 8 days. Most recently, MuPsych was updated on October 13, 2026 and Spectrum on October 20, 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.*