# Deep Sleep Tracker & Rest vs Rain Synth

The clearest difference is in-app purchases: Rain Synth at none against Deep Sleep Tracker & Rest's 3. Rain Synth also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Deep Sleep Tracker & Rest sells 3 in-app purchases, starting at $9.99 per month. Rain Synth asks for nothing beyond the download.

## The numbers

| Metric | Deep Sleep Tracker & Rest | Rain Synth |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | — | Every 4 days |
| Size | 81 MB | 2 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hue Thai Thi](https://appshunter.io/developer/1754271479) | [Kaine Shutler](https://appshunter.io/developer/1889281429) |

## What reviewers say

### Deep Sleep Tracker & Rest

[App page](https://appshunter.io/ios/app/deep-sleep-tracker-and-rest/id6754276226)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $9.99 | per month |
| Yearly Premium | $34.99 | per year |
| Lifetime Premium | $49.99 | one-time |


### Rain Synth

[App page](https://appshunter.io/ios/app/rain-synth-sleep-sounds/id6761389583)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Deep Sleep Tracker & Rest free?

Deep Sleep Tracker & Rest is free to download, with in-app purchases available.

### Is Rain Synth free?

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

### Do Deep Sleep Tracker & Rest or Rain Synth have ads?

Deep Sleep Tracker & Rest shows ads; Rain Synth does not.

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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.*