# Noise Patrol App vs Crypto String

The clearest difference is price: Noise Patrol App at Free against Crypto String's $0.99. Noise Patrol App also leads on iOS requirement (15.6 vs 18.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Noise Patrol App is free to download; Crypto String costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Noise Patrol App ships an update every 5 months, Crypto String every 4 months. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Noise Patrol App | Crypto String |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Size | 23 MB | 0 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [IMS Merilni sistemi d.o.o.](https://appshunter.io/developer/549239952) | [Xu Wang](https://appshunter.io/developer/1216698112) |

## What reviewers say

### Noise Patrol App

[App page](https://appshunter.io/ios/app/noise-patrol-app/id1101685127)

**Features:** macOS Compatibility

**In-app purchases:** none


### Crypto String

[App page](https://appshunter.io/ios/app/crypto-string-aes-encrypt/id6754283595)

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

**In-app purchases:** none


## Frequently asked questions

### Is Noise Patrol App free?

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

### Is Crypto String free?

Crypto String costs $0.99, with no in-app purchases.

### Do Noise Patrol App or Crypto String have ads?

Neither Noise Patrol App nor Crypto String shows ads.

### Which is updated more often, Noise Patrol App or Crypto String?

Noise Patrol App ships an update every 5 months, and Crypto String every 4 months. Most recently, Noise Patrol App was updated on September 9, 2026 and Crypto String on September 19, 2026.

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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.*