# Quantum Frequency vs Spectrolite

The clearest difference is rating: Spectrolite at 4.8 against Quantum Frequency's 4.1. Spectrolite also leads on ratings volume (51 vs 7). Quantum Frequency's advantage is in-app purchases (none vs 1) and iOS requirement (9.3 vs 15.6). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Spectrolite sells 1 one-off in-app purchase. Quantum Frequency asks for nothing beyond the download.

Spectrolite holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Spectrolite has 51 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 80% of Quantum Frequency's written reviews are positive against 83% of Spectrolite's.

Quantum Frequency ships an update every 7 months, Spectrolite every 8 months. The most recent releases landed on September 7, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Quantum Frequency | Spectrolite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (7 ratings)](https://appshunter.io/ios/app/quantum-frequency/id1137628147/reviews) | **[4.8 (51 ratings)](https://appshunter.io/ios/app/spectrolite/id1480240180/reviews)** |
| Number of ratings | 7 | **51** |
| Positive reviews | 80.0% of reviews | **83.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 8 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 20 MB | 1 MB |
| Requires iOS | **9.3** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [LIMITED LIABILITY COMPANY DESIGN AND TEST LAB](https://appshunter.io/developer/465342288) | [Waxing Wave](https://appshunter.io/developer/392942046) |

## What reviewers say

### Quantum Frequency

[App page](https://appshunter.io/ios/app/quantum-frequency/id1137628147)

Generate custom healing tones and programmable sequences using your device's speaker. This app is designed to work with forthcoming energetic healing devices, converting frequencies into pulsed energy waves.

**Highlights:** Custom frequency generation, Programmable tone sequences, Device speaker output, Compatibility with QSB and QTB, Energetic healing concepts

**Features:** macOS Compatibility

**In-app purchases:** none


### Spectrolite

[App page](https://appshunter.io/ios/app/spectrolite/id1480240180)

This app visualizes sound in real-time using various spectrogram types. Explore detailed audio data with intuitive touch controls and adjustable parameters. An optional purchase unlocks advanced measurement tools.

**Highlights:** Real-time spectrogram visualization, Constant-Q, linear, and mel frequency scales, Full human hearing frequency range, Intuitive touch panning and zooming, Adjustable gain, Q, and other parameters, Pro version: grids, scales, spectrum view, tap-to-measure

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | one-time |


## Frequently asked questions

### Is Quantum Frequency free?

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

### Is Spectrolite free?

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

### Which has better reviews, Quantum Frequency or Spectrolite?

Spectrolite is rated higher. Quantum Frequency averages 4.1 out of 5 from 7 ratings, while Spectrolite averages 4.8 from 51 ratings.

### Do Quantum Frequency or Spectrolite have ads?

Neither Quantum Frequency nor Spectrolite shows ads.

### Which is updated more often, Quantum Frequency or Spectrolite?

Quantum Frequency ships an update every 7 months, and Spectrolite every 8 months. Most recently, Quantum Frequency was updated on September 7, 2026 and Spectrolite on September 23, 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.*