# Satisfy Sounds vs Red Light Therapy Tracker

The clearest difference is iOS requirement: Red Light Therapy Tracker at 16.4 against Satisfy Sounds's 18.5. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Satisfy Sounds sells 1 one-off in-app purchase and Red Light Therapy Tracker sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Satisfy Sounds | Red Light Therapy Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Size | 15 MB | 84 MB |
| Requires iOS | 18.5 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Jacob Dale-Rourke](https://appshunter.io/developer/1774239857) | [Fatih Erdogan](https://appshunter.io/developer/1526494037) |

## What reviewers say

### Satisfy Sounds

[App page](https://appshunter.io/ios/app/satisfy-sounds/id6752653608)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Red Light Therapy Tracker

[App page](https://appshunter.io/ios/app/red-light-therapy-tracker/id6788332075)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $3.99 | per 7 days |
| Monthly Subscription | $7.99 | per month |
| Annual Subscription | $24.99 | per year |


## Frequently asked questions

### Is Satisfy Sounds free?

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

### Is Red Light Therapy Tracker free?

Red Light Therapy Tracker is free to download, with in-app purchases available.

### Do Satisfy Sounds or Red Light Therapy Tracker have ads?

Neither Satisfy Sounds nor Red Light Therapy Tracker shows ads.

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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.*