# ThinkSign_LedLinkBle vs Sentinel

The clearest difference is in-app purchases: ThinkSign_LedLinkBle at none against Sentinel's 1. ThinkSign_LedLinkBle also leads on iOS requirement (16.6 vs 26.0). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | ThinkSign_LedLinkBle | Sentinel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Size | 25 MB | 3 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [xiangjun zhao](https://appshunter.io/developer/1848082622) | [6tSevn BV](https://appshunter.io/developer/1888787908) |

## What reviewers say

### ThinkSign_LedLinkBle

[App page](https://appshunter.io/ios/app/thinksign-ledlinkble/id6757172262)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sentinel

[App page](https://appshunter.io/ios/app/sentinel-ip-camera-setup/id6785523818)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keep Full Access | $0.99 | one-time |


## Frequently asked questions

### Is ThinkSign_LedLinkBle free?

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

### Is Sentinel free?

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

### Do ThinkSign_LedLinkBle or Sentinel have ads?

Neither ThinkSign_LedLinkBle nor Sentinel shows ads.

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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.*