# EKCMS vs SentryBlack

The clearest difference is in-app purchases: EKCMS at none against SentryBlack's 2. EKCMS also leads on ads (none vs shown) and update cadence (weekly vs fortnightly). On price and device support there is nothing between them.

Both are free to download. SentryBlack sells 2 in-app purchases, starting at $4.99 per month. EKCMS asks for nothing beyond the download.

EKCMS ships an update weekly, SentryBlack fortnightly. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | EKCMS | SentryBlack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Fortnightly |
| Size | 20 MB | 17 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [ELECTRIC LIBRARY (MALAYSIA) SDN. BHD.](https://appshunter.io/developer/1730883369) | [Matthew Wong](https://appshunter.io/developer/6774040057) |

## What reviewers say

### EKCMS

[App page](https://appshunter.io/ios/app/ekcms/id6477858693)

**Features:** macOS Compatibility

**In-app purchases:** none


### SentryBlack

[App page](https://appshunter.io/ios/app/sentryblack-security-camera/id6790313702)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SentryBlack Pro (Monthly) | $4.99 | per month |
| SentryBlack Pro (Yearly) | $29.99 | per year |


## Frequently asked questions

### Is EKCMS free?

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

### Is SentryBlack free?

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

### Do EKCMS or SentryBlack have ads?

SentryBlack shows ads; EKCMS does not.

### Which is updated more often, EKCMS or SentryBlack?

EKCMS ships an update weekly, and SentryBlack fortnightly. Most recently, EKCMS was updated on October 5, 2026 and SentryBlack on October 3, 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.*