# DBHam vs EIRP Calculator

The clearest difference is update cadence: DBHam at every 29 months against EIRP Calculator's every 129 months. DBHam also leads on iOS requirement (10.3 vs 17.5). On price, ads, in-app purchases and device support there is nothing between them.

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

DBHam ships an update every 29 months, EIRP Calculator every 129 months. The most recent releases landed on June 5, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | DBHam | EIRP Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/dbham/id558673465/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 29 months** | Every 129 months |
| Monetization | Free | — |
| Size | 12 MB | 0 MB |
| Requires iOS | **10.3** | 17.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Sullivan](https://appshunter.io/developer/307748713) | [Pulsely Consulting](https://appshunter.io/developer/475349326) |

## What reviewers say

### DBHam

[App page](https://appshunter.io/ios/app/dbham/id558673465)

Calculate the distance and bearing between two locations using the Maidenhead grid system. Originally designed for amateur radio operators, it helps determine proximity and direction to other radio enthusiasts.

**Highlights:** Calculate distance, Calculate bearing, Maidenhead grid system, Amateur radio focused, Location annotation

**Features:** macOS Compatibility

**In-app purchases:** none


### EIRP Calculator

[App page](https://appshunter.io/ios/app/eirp-calculator/id785448118)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DBHam free?

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

### Is EIRP Calculator free?

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

### Do DBHam or EIRP Calculator have ads?

Neither DBHam nor EIRP Calculator shows ads.

### Which is updated more often, DBHam or EIRP Calculator?

DBHam ships an update every 29 months, and EIRP Calculator every 129 months. Most recently, DBHam was updated on June 5, 2026 and EIRP Calculator on September 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.*