# Zero vs NapNap App

The clearest difference is in-app purchases: NapNap App at none against Zero's 3. NapNap App also leads on iOS requirement (13.0 vs 18.5). On price, ads and device support there is nothing between them.

Both are free to download. Zero sells 3 in-app purchases, starting at $1.99 per month. NapNap App asks for nothing beyond the download.

## The numbers

| Metric | Zero | NapNap App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zero-rush/id6753113382/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Freemium | — |
| Size | 10 MB | 1 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Adiel Vega Lopez](https://appshunter.io/developer/1842567782) | [Zachary Huang](https://appshunter.io/developer/1813566288) |

## What reviewers say

### Zero

[App page](https://appshunter.io/ios/app/zero-rush/id6753113382)

This app helps you manage stress by combining guided breathing exercises with real-time biometric data from your Apple Watch. It provides insights into your stress patterns and helps you schedule recovery moments to build resilience.

**Highlights:** Guided breathing exercises, Real-time biometric tracking (RHR, HRV), Stress pattern analysis, Scheduled mindful breaks, Relaxation validation, Local data storage

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access – Monthly | $1.99 | per month |
| All Access – Yearly | $19.99 | per year |
| Lifetime All Access | $89.99 | one-time |


### NapNap App

[App page](https://appshunter.io/ios/app/napnap-app/id6754207372)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Zero free?

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

### Is NapNap App free?

NapNap App is free to download, with no in-app purchases.

### Do Zero or NapNap App have ads?

Neither Zero nor NapNap App shows ads.

---

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