# RF Engineer's Calc vs CB Security

The clearest difference is iOS requirement: CB Security at 12.0 against RF Engineer's Calc's 16.1. 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.

RF Engineer's Calc ships an update every 10 months, CB Security every 11 months. The most recent releases landed on October 27, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | RF Engineer's Calc | CB Security |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 11 months |
| Size | 43 MB | 53 MB |
| Requires iOS | 16.1 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GRAHAM JOHN SMITH](https://appshunter.io/developer/1668396908) | [Oryx Systems CC](https://appshunter.io/developer/966072104) |

## What reviewers say

### RF Engineer's Calc

[App page](https://appshunter.io/ios/app/rf-engineers-calc/id1668396906)

**Features:** macOS Compatibility

**In-app purchases:** none


### CB Security

[App page](https://appshunter.io/ios/app/cb-security/id6470203600)

**In-app purchases:** none


## Frequently asked questions

### Is RF Engineer's Calc free?

RF Engineer's Calc is free to download, with no in-app purchases.

### Is CB Security free?

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

### Do RF Engineer's Calc or CB Security have ads?

Neither RF Engineer's Calc nor CB Security shows ads.

### Which is updated more often, RF Engineer's Calc or CB Security?

RF Engineer's Calc ships an update every 10 months, and CB Security every 11 months. Most recently, RF Engineer's Calc was updated on October 27, 2026 and CB Security on October 13, 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.*