# ShellBox OTA vs Sentinel

The clearest difference is in-app purchases: ShellBox OTA at none against Sentinel's 1. ShellBox OTA also leads on ads (none vs shown) and update cadence (weekly vs every 4 weeks). On price and device support there is nothing between them.

Both are free to download. Sentinel sells 1 one-off in-app purchase. ShellBox OTA asks for nothing beyond the download.

ShellBox OTA ships an update weekly, Sentinel every 4 weeks. The most recent releases landed on September 21, 2026 and June 27, 2026 respectively.

## The numbers

| Metric | ShellBox OTA | Sentinel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 4 weeks |
| Size | 33 MB | 12 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [黎鑫 邓](https://appshunter.io/developer/1631067636) | [ALI EMIR CIHAN](https://appshunter.io/developer/1850444654) |

## What reviewers say

### ShellBox OTA

[App page](https://appshunter.io/ios/app/shellbox-ota/id6757002720)

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

**In-app purchases:** none


### Sentinel

[App page](https://appshunter.io/ios/app/sentinel-wifi-network-scanner/id6760856503)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sentinel Pro (Ömür Boyu) | $9.99 | one-time |


## Frequently asked questions

### Is ShellBox OTA free?

ShellBox OTA is free to download, with no in-app purchases.

### Is Sentinel free?

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

### Do ShellBox OTA or Sentinel have ads?

Sentinel shows ads; ShellBox OTA does not.

### Which is updated more often, ShellBox OTA or Sentinel?

ShellBox OTA ships an update weekly, and Sentinel every 4 weeks. Most recently, ShellBox OTA was updated on September 21, 2026 and Sentinel on June 27, 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.*