# FrequencyCat vs Cantus

The clearest difference is update cadence: Cantus at every 5 days against FrequencyCat's every 40 months. Cantus also leads on device support (3 vs 1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for FrequencyCat against 5.0 for Cantus. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

FrequencyCat ships an update every 40 months, Cantus every 5 days. The most recent releases landed on October 6, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | FrequencyCat | Cantus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/frequencycat/id6448219399/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/cantus-voicing-lab/id6772984019/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 3 MB | 3 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Xuesong Zhang](https://appshunter.io/developer/1684075008) | [Jason Zachariah](https://appshunter.io/developer/1896513710) |

## What reviewers say

### FrequencyCat

[App page](https://appshunter.io/ios/app/frequencycat/id6448219399)

Transform your photos into unique sound art using advanced image-to-sound technology. Explore, enjoy, and share your creative audio-visual pieces. Embrace your inner artist and discover the unexpected.

**Highlights:** Morph images into sound art, Create spectrogram oddities, Share sound art creations, Unique audio-visual experience

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

**In-app purchases:** none


### Cantus

[App page](https://appshunter.io/ios/app/cantus-voicing-lab/id6772984019)

This interactive tool helps musicians explore harmony and chord voicings on a virtual piano. It allows users to visualize how notes move within chords, understand modal relationships, and develop a feel for harmony through focused practice.

**Highlights:** Interactive chord and voicing exploration, Piano keyboard visualization, Modal and scale-based harmony practice, Voice-leading movement analysis, Tone.js audio playback, Account-free operation

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

**In-app purchases:** none


## Frequently asked questions

### Is FrequencyCat free?

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

### Is Cantus free?

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

### Which has better reviews, FrequencyCat or Cantus?

FrequencyCat and Cantus are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do FrequencyCat or Cantus have ads?

Neither FrequencyCat nor Cantus shows ads.

### Which is updated more often, FrequencyCat or Cantus?

FrequencyCat ships an update every 40 months, and Cantus every 5 days. Most recently, FrequencyCat was updated on October 6, 2026 and Cantus on October 21, 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.*