# Sound Machine vs Keeps

The clearest difference is iOS requirement: Keeps at 18.0 against Sound Machine's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sound Machine sells 1 one-off in-app purchase and Keeps sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Sound Machine | Keeps |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/keeps-cost-per-use-tracker/id6811795155/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Monetization | — | Freemium |
| Size | 162 MB | 59 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Richardson](https://appshunter.io/developer/1887851473) | [Chen He](https://appshunter.io/developer/1843281784) |

## What reviewers say

### Sound Machine

[App page](https://appshunter.io/ios/app/sound-machine-sleep-sounds/id6793753577)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sound Machine Premium | $9.99 | one-time |


### Keeps

[App page](https://appshunter.io/ios/app/keeps-cost-per-use-tracker/id6811795155)

Track the true cost of your possessions by logging their price and usage. See how often you use items and when their cost per day will decrease. Import purchases easily and organize your collection with custom categories and tags.

**Highlights:** Track cost per day and cost per use, Log item uses and undo them, Import purchases from Amazon, PDFs, or spreadsheets, Organize items with photos, prices, and notes, Customizable categories and tags, Search and filter your collection, On-device AI for suggestions and queries

**Features:** Family Sharing, iMessage stickers, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keeps Pro | $9.99 | one-time |


## Frequently asked questions

### Is Sound Machine free?

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

### Is Keeps free?

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

### Do Sound Machine or Keeps have ads?

Neither Sound Machine nor Keeps 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.*