# Green Noise Sleep & Focus vs Zone 2 Training App

The clearest difference is in-app purchases: Zone 2 Training App at none against Green Noise Sleep & Focus's 4. Zone 2 Training App also leads on ads (none vs shown) and update cadence (monthly vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Green Noise Sleep & Focus sells 4 in-app purchases, starting at $1.99 per 7 days. Zone 2 Training App asks for nothing beyond the download.

Green Noise Sleep & Focus ships an update every 4 months, Zone 2 Training App monthly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Green Noise Sleep & Focus | Zone 2 Training App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/green-noise-sleep-and-focus/id6742936120/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 18 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Hue Thai Thi](https://appshunter.io/developer/1754271479) | [Sanjay Gill](https://appshunter.io/developer/1709125864) |

## What reviewers say

### Green Noise Sleep & Focus

[App page](https://appshunter.io/ios/app/green-noise-sleep-and-focus/id6742936120)

This app uses nature sounds, colored noise, and healing frequencies to help users relax, improve sleep quality, and enhance focus. It offers customizable soundscapes for stress relief, meditation, and productivity, with features like smart timers and offline playback.

**Highlights:** Colored noise options (Green, Pink, White, Brown), Soothing nature soundscapes, Lo-Fi music and healing frequencies, Focus mode for productivity and ADHD, Smart sleep timer with auto shut-off, Background playback and offline mode

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $1.99 | per 7 days |
| Monthly Premium | $4.99 | per month |
| Yearly Premium | $19.99 | per year |
| Lifetime Premium | $29.99 | one-time |


### Zone 2 Training App

[App page](https://appshunter.io/ios/app/zone-2-training-app/id6776123744)

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

**In-app purchases:** none


## Frequently asked questions

### Is Green Noise Sleep & Focus free?

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

### Is Zone 2 Training App free?

Zone 2 Training App is free to download, with no in-app purchases.

### Do Green Noise Sleep & Focus or Zone 2 Training App have ads?

Green Noise Sleep & Focus shows ads; Zone 2 Training App does not.

### Which is updated more often, Green Noise Sleep & Focus or Zone 2 Training App?

Green Noise Sleep & Focus ships an update every 4 months, and Zone 2 Training App monthly. Most recently, Green Noise Sleep & Focus was updated on October 30, 2026 and Zone 2 Training App on October 28, 2026.

---

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