DBHamPlot vs Max Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DBHamPlot
Calculate distance and bearing between two locations using Maidenhead grid squares. This tool is designed for amateur radio operators to easily determine proximity and direction to other hams, featuring an interactive map for pinpointing locations and identifying grid areas.
- Compute distance and bearing
- Maidenhead location input
- Map display with annotations
- Identify six-digit grid areas
- Interactive map for location pinpointing
- User-added annotation removal
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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. This version specifically for the iPad provides map and controls all on one screen. The larger map area over both iPhone versions should prove helpful. You get a map of the source and target along with a pin annotation and an overlay identifying the six-digit grid area. If a user touches an empty location on the screen for one second a new annotation is added at that spot identifying the grid. Any user-added annotations are removed if a new source or target are entered. This feature is great because you can zoom in on a location, touch the screen, and get a 6 digit grid; this is especially handy when your microwave buddy pulls over to the side of the road to make a contact with you (or someone else) but he/she has no idea what their grid square is.
Max Calc
This app offers a versatile calculation suite, combining standard, scientific, developer, and accounting functions. It also includes a unit converter and tools for health and date calculations, all within a user-friendly interface.
- Standard and Scientific Calculator
- Developer Calculator (hex, binary)
- Accounting Calculator
- 130+ Unit Converter
- Body and Date/Time Calculator
- History tracking
- Customizable result formatting
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Max Calc: Your All-in-One Calculator App Max Calc is more than just a calculator; it's a comprehensive toolset designed to simplify your calculations across various domains. With its six-in-one functionality, you can effortlessly handle everything from basic arithmetic to complex scientific computations, developer-specific tasks, financial calculations, unit conversions, and even personal health metrics. Key features include: * Standard and Scientific Calculator: Perform basic and advanced calculations with ease. * Developer Calculator: Work with hexadecimal, binary, and 7-64 bit numbers, along with integer/real number CPU representation and signed/unsigned arithmetic. * Accounting Calculator: Tackle financial calculations with dedicated functions. * 130+ Unit Converter: Convert between various units of measurement effortlessly. * Body and Date/Time Calculator: Calculate BMI, age, and more. Max Calc is designed with simplicity in mind, providing a user-friendly interface without compromising on functionality. Enjoy features like memory storage, history tracking, customizable result formatting, and more.
Screenshots
Verdict
The clearest difference is in-app purchases: DBHamPlot at none against Max Calc's 2. DBHamPlot also leads on iOS requirement (9.1 vs 17.0). Max Calc's advantage is update cadence (every 9 days vs every 42 months). On price, rating, ratings volume and ads 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. Max Calc sells 2 one-off in-app purchases. DBHamPlot asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for DBHamPlot against 5.0 for Max Calc. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
DBHamPlot ships an update every 42 months, Max Calc every 9 days. The most recent releases landed on September 8, 2026 and June 4, 2026 respectively.
| Parameter | DBHamPlot | Max Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 42 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 9.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Sullivan | Anatolii Mazkun |
Customer experience
DBHamPlot
Max Calc
In-app purchases
DBHamPlot
No in-app purchases
Max Calc
- 5 days Free Using All PremiumFree
- Premium features$4.99









