# Green & Brown Noise Sleep vs Trace Elements

The clearest difference is review sentiment: Trace Elements at 100% against Green & Brown Noise Sleep's 50%. Trace Elements also leads on ads (none vs shown) and rating (5.0 vs 4.7). Green & Brown Noise Sleep's advantage is ratings volume (30 vs 1). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Green & Brown Noise Sleep sells 6 in-app purchases, starting at $0.99 per month and Trace Elements sells 5 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Trace Elements holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Green & Brown Noise Sleep has 30 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Green & Brown Noise Sleep's written reviews are positive against 100% of Trace Elements's.

Green & Brown Noise Sleep ships an update every 3 weeks, Trace Elements weekly. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Green & Brown Noise Sleep | Trace Elements |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (30 ratings)](https://appshunter.io/ios/app/green-and-brown-noise-sleep/id1621924291/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/trace-elements/id6803194660/reviews)** |
| Number of ratings | **30** | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 180 MB | 69 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [XIAOLEI LI](https://appshunter.io/developer/806257827) | [Code Cowboys](https://appshunter.io/developer/6803168073) |

## What reviewers say

### Green & Brown Noise Sleep

[App page](https://appshunter.io/ios/app/green-and-brown-noise-sleep/id1621924291)

This app offers a variety of calming ambient sounds, including green and brown noise, to help users fall asleep faster, stay asleep longer, and improve focus. It features a sound mixer, sleep tracker, and snore recorder to enhance the sleep experience.

**Highlights:** 90+ sleep sounds, Green and Brown Noise options, Customizable sound mixer, Sleep tracker and recorder, Snore detector, Timer and sleep reminder

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version for One Month | $0.99 | per month |
| Full Version for One Year | $4.99 | per year |
| Premium Month Subscription | $9.99 | per month |
| Premium Plus for Newcomer | $14.99 | per year |
| Premium Plus Year Subscription | $29.99 | per year |
| Full Version for Lifetime | $14.99 | one-time |


### Trace Elements

[App page](https://appshunter.io/ios/app/trace-elements/id6803194660)

This app helps individuals manage restricted diets by logging food intake and estimating nickel or cobalt content. It offers offline functionality, a customizable food database, and trend tracking to monitor daily intake against set limits.

**Highlights:** Offline food logging, Nickel and cobalt intake estimation, Customizable food database, Barcode scanning, Recipe building, Daily trend calendar, Journaling for mood and notes

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trace Elements Pro | $1.99 | per month |
| Trace Elements Pro | $12.99 | per year |
| A coffee | $1.99 | one-time |
| A big coffee | $4.99 | one-time |
| Coffee for a week | $9.99 | one-time |


## Frequently asked questions

### Is Green & Brown Noise Sleep free?

Green & Brown Noise Sleep is free to download, with in-app purchases available.

### Is Trace Elements free?

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

### Which has better reviews, Green & Brown Noise Sleep or Trace Elements?

Trace Elements is rated higher. Green & Brown Noise Sleep averages 4.7 out of 5 from 30 ratings, while Trace Elements averages 5.0 from 1 ratings.

### Do Green & Brown Noise Sleep or Trace Elements have ads?

Green & Brown Noise Sleep shows ads; Trace Elements does not.

### Which is updated more often, Green & Brown Noise Sleep or Trace Elements?

Green & Brown Noise Sleep ships an update every 3 weeks, and Trace Elements weekly. Most recently, Green & Brown Noise Sleep was updated on October 11, 2026 and Trace Elements on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*