# Cantus vs Rithmatic

Cantus and Rithmatic are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Cantus ships an update every 5 days, Rithmatic every 3 days. The most recent releases landed on September 17, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | Cantus | Rithmatic |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Size | 3 MB | 83 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Jason Zachariah](https://appshunter.io/developer/1896513710) | [MADE WITH BEST PRACTICE LLC](https://appshunter.io/developer/6779338119) |

## What reviewers say

### Cantus

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

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

**In-app purchases:** none


### Rithmatic

[App page](https://appshunter.io/ios/app/rithmatic/id6794107110)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Cantus free?

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

### Is Rithmatic free?

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

### Do Cantus or Rithmatic have ads?

Neither Cantus nor Rithmatic shows ads.

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

Cantus ships an update every 5 days, and Rithmatic every 3 days. Most recently, Cantus was updated on September 17, 2026 and Rithmatic on August 17, 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.*