# HF Beam Antenna Calculator vs OBD2 Code

The clearest difference is price: OBD2 Code at Free against HF Beam Antenna Calculator's $0.99. OBD2 Code also leads on iOS requirement (6.0 vs 15.6). HF Beam Antenna Calculator's advantage is rating (4.0 vs 3.3) and update cadence (every 4 months vs every 47 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

OBD2 Code is free to download; HF Beam Antenna Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HF Beam Antenna Calculator holds the better App Store score, 4.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 50% of HF Beam Antenna Calculator's written reviews are positive against 39% of OBD2 Code's.

HF Beam Antenna Calculator ships an update every 4 months, OBD2 Code every 47 months. The most recent releases landed on August 21, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | HF Beam Antenna Calculator | OBD2 Code |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/hf-beam-antenna-calculator/id479135673/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/obd2-code/id492632063/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | **50.0% of reviews** | 39.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 47 months |
| Monetization | Paid | **Free** |
| Size | 6 MB | 2 MB |
| Requires iOS | 15.6 | **6.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Verosocial Studio](https://appshunter.io/developer/354566841) | [Liang-Hung Publishing](https://appshunter.io/developer/340127474) |

## What reviewers say

### HF Beam Antenna Calculator

[App page](https://appshunter.io/ios/app/hf-beam-antenna-calculator/id479135673)

Calculate Maidenhead locations and HF beam antenna element sizes in various units. It also offers extensive conversion tools for distance, area, and volume, supporting both imperial and metric systems.

**Highlights:** Maidenhead Locator System, HF Beam Antenna Calculator (2/3 elements), EIRP and Pure ERP calculations, Area, Distance, and Volume Converters, Imperial and Metric unit support, Email calculation sharing, Offline functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### OBD2 Code

[App page](https://appshunter.io/ios/app/obd2-code/id492632063)

This app serves as a reference for standard Diagnostic Trouble Codes (DTCs). It helps users understand fault codes generated by a vehicle's onboard computer, aiding in problem diagnosis.

**Highlights:** Diagnostic Trouble Code reference, Vehicle fault code lookup, Problem diagnosis aid

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HF Beam Antenna Calculator free?

HF Beam Antenna Calculator costs $0.99, with no in-app purchases.

### Is OBD2 Code free?

OBD2 Code is free to download, with no in-app purchases.

### Which has better reviews, HF Beam Antenna Calculator or OBD2 Code?

HF Beam Antenna Calculator is rated higher. HF Beam Antenna Calculator averages 4.0 out of 5 from 3 ratings, while OBD2 Code averages 3.3 from 3 ratings.

### Do HF Beam Antenna Calculator or OBD2 Code have ads?

Neither HF Beam Antenna Calculator nor OBD2 Code shows ads.

### Which is updated more often, HF Beam Antenna Calculator or OBD2 Code?

HF Beam Antenna Calculator ships an update every 4 months, and OBD2 Code every 47 months. Most recently, HF Beam Antenna Calculator was updated on August 21, 2026 and OBD2 Code on September 14, 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.*