# Clamshell vs Sentinel

The clearest difference is update cadence: Sentinel at weekly against Clamshell's every 6 weeks. Clamshell's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Clamshell ships an update every 6 weeks, Sentinel weekly. Both last shipped on September 21, 2026.

## The numbers

| Metric | Clamshell | Sentinel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/clamshell/id6477896729/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 8 MB | 9 MB |
| Requires iOS | 18.4 | **17** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Kovrazhkin](https://appshunter.io/developer/1544108014) | [Guangdong Greenway Technology Co.,LTD](https://appshunter.io/developer/1802601217) |

## What reviewers say

### Clamshell

[App page](https://appshunter.io/ios/app/clamshell/id6477896729)

Monitor the status of all your Macs from your iPhone or iPad. This app allows you to track lid and system states remotely, ensuring you're always informed about your devices. It utilizes iCloud for secure data synchronization without third-party servers.

**Highlights:** Monitor Mac lid states, Track system statuses (Awake, Sleep, etc.), Remote monitoring from iPhone/iPad, iCloud synchronization, Supports Mac desktops

**In-app purchases:** none


### Sentinel

[App page](https://appshunter.io/ios/app/sentinel-lnx/id6757156713)

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

**In-app purchases:** none


## Frequently asked questions

### Is Clamshell free?

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

### Is Sentinel free?

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

### Do Clamshell or Sentinel have ads?

Neither Clamshell nor Sentinel shows ads.

### Which is updated more often, Clamshell or Sentinel?

Clamshell ships an update every 6 weeks, and Sentinel weekly. Most recently, Clamshell was updated on September 21, 2026 and Sentinel on September 21, 2026.

---

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