# Correctional Services Bureau vs CKT EM system

The clearest difference is iOS requirement: CKT EM system at 11.0 against Correctional Services Bureau's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Correctional Services Bureau ships an update every 5 months, CKT EM system every 10 months. The most recent releases landed on October 24, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Correctional Services Bureau | CKT EM system |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 10 months |
| Size | 13 MB | 55 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Correctional Services Bureau](https://appshunter.io/developer/1228513133) | [Norray Resource Pty. Ltd.](https://appshunter.io/developer/1054877991) |

## What reviewers say

### Correctional Services Bureau

[App page](https://appshunter.io/ios/app/correctional-services-bureau/id1228513134)

**Features:** macOS Compatibility

**In-app purchases:** none


### CKT EM system

[App page](https://appshunter.io/ios/app/ckt-em-system/id1538725058)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Correctional Services Bureau free?

Correctional Services Bureau is free to download, with no in-app purchases.

### Is CKT EM system free?

CKT EM system is free to download, with no in-app purchases.

### Do Correctional Services Bureau or CKT EM system have ads?

Neither Correctional Services Bureau nor CKT EM system shows ads.

### Which is updated more often, Correctional Services Bureau or CKT EM system?

Correctional Services Bureau ships an update every 5 months, and CKT EM system every 10 months. Most recently, Correctional Services Bureau was updated on October 24, 2026 and CKT EM system on November 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.*