DBHam vs HAM Distance
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DBHam
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.
- Calculate distance
- Calculate bearing
- Maidenhead grid system
- Amateur radio focused
- Location annotation
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Compute distance and bearing using Maidenhead location. This was originally intended for use by amateur radio operators who participate in microwave communications however it can be used by any ham in order to determine a distance and bearing to another radio amateur. If you want to see maps of the source and target with annotations and overlays as well as be able to touch the map to determine the grid at a particular point, then take a look at our App: DBHamPlus.
HAM Distance
Calculate distances between amateur radio stations using callsigns, grid locators, or coordinates. Save, visualize, and analyze your contacts with interactive maps and statistics. Syncs across devices via iCloud.
- Distance calculation via callsign, grid, or coordinates
- Save and label distance pairs
- Interactive map visualization of contacts
- Contact statistics and distribution charts
- iCloud sync across devices
- Home screen widgets for quick access
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Calculate the distance between any two amateur radio stations in seconds. Mircules HAM Distance is the essential tool for ham radio operators who want to know exactly how far their signal traveled. Enter callsigns, Maidenhead grid locators, or coordinates and get the great-circle distance instantly. THREE INPUT METHODS • Callsign: Enter any amateur callsign to resolve it to coordinates via QRZ.com or HamQTH.com • Maidenhead Grid: Enter grid locators from 2 to 8 characters • Lat/Lon: Enter decimal coordinates directly SAVE YOUR CALCULATIONS Save distance pairs with custom labels like "Home to repeater" or "Field Day DX." Track your contacts over time and review them anytime. MAP VISUALIZATION Plot your saved distances on an interactive map. Filter by week, month, or year, or view all contacts at once. See markers and distance lines for every pair. STATISTICS See your total contacts, longest and shortest distance, average distance, and a distribution chart showing how your contacts break down by range. ICLOUD SYNC Your saved pairs sync automatically across all your devices via iCloud. No account needed — just sign into iCloud and your data is there. HOME SCREEN WIDGETS Add widgets to your home screen to see your latest distance calculation and stats at a glance. NO ACCOUNT REQUIRED The calculator works immediately. Configure your QRZ.com or HamQTH.com credentials and start calculating. Your data stays on your device and in your private iCloud. BUILT FOR HAM RADIO Designed specifically for amateur radio operators. Supports the Maidenhead Locator System, integrates with QRZ.com and HamQTH.com, and uses the Haversine formula for accurate great-circle distances. Free to use. No ads. Tips welcome. 73 de Mircules
Screenshots
Verdict
The clearest difference is review sentiment: DBHam at 40% against HAM Distance's 0%. DBHam also leads on in-app purchases (none vs 3) and iOS requirement (10.3 vs 17.0). HAM Distance's advantage is update cadence (every 12 months vs every 29 months). On price, ads, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. HAM Distance sells 3 one-off in-app purchases. DBHam asks for nothing beyond the download.
DBHam ships an update every 29 months, HAM Distance every 12 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.
| Parameter | DBHam | HAM Distance |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (3 ratings) — better | — |
| Positive reviews | 40.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 3 — better | — |
| Update frequency | Every 29 months | Every 12 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 10.3 — better | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Sullivan | Mircules |
Customer experience
DBHam
HAM Distance
In-app purchases
DBHam
No in-app purchases
HAM Distance
- Small Tip$0.99
- Medium Tip$2.99
- Large Tip$3.99
