# Kudoro vs Sof

The clearest difference is update cadence: Kudoro at every 4 days against Sof's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Kudoro sells 2 in-app purchases, starting at $3.99 per month and Sof sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Kudoro ships an update every 4 days, Sof every 2 weeks. The most recent releases landed on October 30, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Kudoro | Sof |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Size | 114 MB | 73 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Klippros Studios AB](https://appshunter.io/developer/1848540604) | [Arlind Susuri](https://appshunter.io/developer/1867019478) |

## What reviewers say

### Kudoro

[App page](https://appshunter.io/ios/app/kudoro/id6739467446)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kudoro Pro | $3.99 | per month |
| Kudoro Pro | $29.99 | per year |


### Sof

[App page](https://appshunter.io/ios/app/sof-calming-sounds/id6813706319)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| hushly Monthly | $3.99 | per month |
| hushly Full Access | $9.99 | one-time |


## Frequently asked questions

### Is Kudoro free?

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

### Is Sof free?

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

### Do Kudoro or Sof have ads?

Neither Kudoro nor Sof shows ads.

### Which is updated more often, Kudoro or Sof?

Kudoro ships an update every 4 days, and Sof every 2 weeks. Most recently, Kudoro was updated on October 30, 2026 and Sof on October 26, 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.*