# UAS Sentry vs CZI Sound

The clearest difference is update cadence: UAS Sentry at every 2 months against CZI Sound's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UAS Sentry ships an update every 2 months, CZI Sound every 8 months. The most recent releases landed on October 23, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | UAS Sentry | CZI Sound |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (5 ratings)](https://appshunter.io/ios/app/uas-sentry/id1670544405/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | — |
| Size | 3 MB | 64 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vintage Slots of Colorado, Inc](https://appshunter.io/developer/380724433) | [Guangzhou Chengzhi Intelligent Machine Technology Co., Ltd.](https://appshunter.io/developer/1675437495) |

## What reviewers say

### UAS Sentry

[App page](https://appshunter.io/ios/app/uas-sentry/id1670544405)

This application displays nearby drones when connected to a specific receiver. It also enables configuration of the companion UAS Sentry Remote ID Receiver. Without the receiver, no drones will be visible.

**Highlights:** View nearby drones, Configure UAS Sentry Receiver, Requires companion hardware, Drone detection interface

**Features:** macOS Compatibility

**In-app purchases:** none


### CZI Sound

[App page](https://appshunter.io/ios/app/czi-sound/id6446013579)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UAS Sentry free?

UAS Sentry is free to download, with no in-app purchases.

### Is CZI Sound free?

CZI Sound is free to download, with no in-app purchases.

### Do UAS Sentry or CZI Sound have ads?

Neither UAS Sentry nor CZI Sound shows ads.

### Which is updated more often, UAS Sentry or CZI Sound?

UAS Sentry ships an update every 2 months, and CZI Sound every 8 months. Most recently, UAS Sentry was updated on October 23, 2026 and CZI Sound on October 5, 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.*