# Sentry Motion Detector Camera vs ActionCatch

The clearest difference is in-app purchases: Sentry Motion Detector Camera at none against ActionCatch's 1. ActionCatch's advantage is iOS requirement (16.6 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ActionCatch sells 1 one-off in-app purchase. Sentry Motion Detector Camera asks for nothing beyond the download.

Sentry Motion Detector Camera ships an update fortnightly, ActionCatch every 9 days. The most recent releases landed on September 21, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Sentry Motion Detector Camera | ActionCatch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Size | 0 MB | 18 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [BigBalli Consulting llc](https://appshunter.io/developer/363765325) | [Martin Luknic](https://appshunter.io/developer/1872362623) |

## What reviewers say

### Sentry Motion Detector Camera

[App page](https://appshunter.io/ios/app/sentry-motion-detector-camera/id6740923419)

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

**In-app purchases:** none


### ActionCatch

[App page](https://appshunter.io/ios/app/actioncatch/id6758338671)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ActionCatch Pro | $7.99 | one-time |


## Frequently asked questions

### Is Sentry Motion Detector Camera free?

Sentry Motion Detector Camera is free to download, with no in-app purchases.

### Is ActionCatch free?

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

### Do Sentry Motion Detector Camera or ActionCatch have ads?

Neither Sentry Motion Detector Camera nor ActionCatch shows ads.

### Which is updated more often, Sentry Motion Detector Camera or ActionCatch?

Sentry Motion Detector Camera ships an update fortnightly, and ActionCatch every 9 days. Most recently, Sentry Motion Detector Camera was updated on September 21, 2026 and ActionCatch on September 20, 2026.

---

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