# HAM Support vs RF Calc JP

The clearest difference is update cadence: RF Calc JP at every 6 days against HAM Support's every 2 weeks. HAM Support's advantage is iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. HAM Support sells 3 in-app purchases, starting at $0.99 per month and RF Calc JP sells 1 in-app purchase, starting at $0.99 per year. Whichever you choose, the download price is not the number that matters.

HAM Support ships an update every 2 weeks, RF Calc JP every 6 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | HAM Support | RF Calc JP |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | Freemium | — |
| Size | 136 MB | 4 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yuri HARUNA](https://appshunter.io/developer/1761952268) | [Hashimoto Yoshikazu](https://appshunter.io/developer/6790925881) |

## What reviewers say

### HAM Support

[App page](https://appshunter.io/ios/app/ham-support-powerful-log-app/id6645736263)

This app helps amateur radio operators manage their contacts and logs. It offers features like station searching, QSO logging, QSL card reminders, and data export. Enjoy offline functionality and an ad-free experience for efficient radio operations.

**Highlights:** QRZ.com integration for station search, Comprehensive QSO log management, Automatic GPS data input, QSL card sending reminders, CSV & ADIF log export, Offline log viewing

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $0.99 | per month |
| Yearly Premium | $4.99 | per year |
| Buy a coffee to developer | $0.99 | one-time |


### RF Calc JP

[App page](https://appshunter.io/ios/app/rf-calc-jp/id6815598081)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RF Calc JP Pro (Yearly) | $0.99 | per year |


## Frequently asked questions

### Is HAM Support free?

HAM Support is free to download, with in-app purchases available.

### Is RF Calc JP free?

RF Calc JP is free to download, with in-app purchases available.

### Do HAM Support or RF Calc JP have ads?

Neither HAM Support nor RF Calc JP shows ads.

### Which is updated more often, HAM Support or RF Calc JP?

HAM Support ships an update every 2 weeks, and RF Calc JP every 6 days. Most recently, HAM Support was updated on October 30, 2026 and RF Calc JP on October 24, 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.*