# RF & Ham Radio Toolkit — Antenna, Coax, dB Calculators

> Pocket-sized RF calculators, converters, and design helpers for engineers and hobbyists. (iPhone/iPad app by Vladislav Zhirnov.)

- Source: https://appshunter.io/ios/app/rf-and-ham-radio-toolkit/id6745524609 (this page in markdown: same URL + `.md`)
- Developer: [Vladislav Zhirnov](https://appshunter.io/developer/1476188065)
- Category: Utilities, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.6 · 17 MB
- Languages: American English, Arabic, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek and 21 more
- Released: 2025-05-06
- Data updated: 2026-08-21
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/rf-and-ham-radio-toolkit/id6745524609/reviews.md

## What is RF & Ham Radio Toolkit?

RF Engineer Toolkit puts a professional-grade suite of radio-frequency calculators, converters and design helpers right in your pocket. Whether you are fine-tuning a microwave link on a rooftop, designing a PCB trace at your desk or studying for your amateur-radio licence, the answers you need are only a tap away.

► POWER & dB
• Watts ↔ dBm ↔ dBW converter
• Linear gain ↔ dB, PAE, EIRP/ERP
• Power-density & exposure limits (FCC / ICNIRP)

► ANTENNAS & PROPAGATION
• Downtilt coverage, LoS horizon & Fresnel zone
• Dipole/monopole length, parabolic & helical design
• Near/Far-field boundaries, wavelength, Doppler shift

► CABLES & TRANSMISSION LINES
• Coax impedance plus loss by type & length
• Delay, phase and quarter-wave transformers
• Microstrip, stripline, CPW, differential pairs, skin depth

► RF SYSTEM ANALYSIS
• End-to-end link-budget & free-space loss
• Cascaded gain, NF, IP3, SFDR calculators
• Radar maximum range, Friis, intermodulation products
• Noise figure ↔ noise temperature, S / Z / Y / ABCD converter

► FILTERS & RESONANCE
• Tank LC and RLC resonance points
• RC/RL −3 dB filter time-constant tools

► GENERAL ELECTRONICS
• Ohm’s law, voltage divider, series/parallel R-C solvers

► WAVEGUIDE
• Rectangular & circular cutoff plus full WR catalogue

• Intuitive clean UI — no ads, no sign-ups, no data collection
• Works completely offline; perfect for field engineers
• Switch between metric & imperial units instantly
• Bookmark favourites and view underlying formulas
• Core tools are free; a single in-app upgrade unlocks the entire lab

Stop scrolling through datasheets or crunching numbers on spreadsheets — install RF Engineer Toolkit and solve it in seconds, anywhere, any time. Download now and keep the ultimate RF cheat-sheet ready on your iPhone or iPad! 

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Power & dB calculations
- Antenna & propagation tools
- Cables & transmission line analysis
- RF system analysis
- Filter & resonance calculators
- General electronics solvers
- Waveguide calculations

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Full version / year | $2.99 | per year |
| Full version / monthly | $0.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove ADS | $5.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/rf-and-ham-radio-toolkit/id6745524609/reviews.md

### 1/5 — dbm不能输入负值

*2025-11-20*

如何解决单位换算输入-
值付值

## Frequently asked questions about RF & Ham Radio Toolkit

### What is RF & Ham Radio Toolkit?

RF & Ham Radio Toolkit is a mobile application that provides a professional-grade suite of radio-frequency calculators, converters, and design helpers. It is designed for users working with radio frequencies, from microwave links to amateur radio.

### Does RF & Ham Radio Toolkit have ads?

No, RF & Ham Radio Toolkit is ad-free. The description explicitly states 'no ads, no sign-ups, no data collection', ensuring an uninterrupted user experience.

### Can I use RF & Ham Radio Toolkit offline?

Yes, RF & Ham Radio Toolkit works completely offline. This makes it ideal for field engineers and users who may not have consistent internet access.

### What kind of calculations does RF & Ham Radio Toolkit offer?

It offers a wide range of calculations including power and dB conversions, antenna and propagation metrics, transmission line properties, RF system analysis, filter resonance, and general electronics formulas.

### Is RF & Ham Radio Toolkit free to use?

The core tools of RF & Ham Radio Toolkit are free. A single in-app upgrade is available to unlock the entire lab of features.

### What are the subscription options for RF & Ham Radio Toolkit?

RF & Ham Radio Toolkit offers subscription plans for its full version, including a monthly option at $0.99 and a yearly option at $2.99. These plans unlock the complete set of features.

### What devices is RF & Ham Radio Toolkit compatible with?

RF & Ham Radio Toolkit is compatible with iPhone and iPad devices. It is suitable for users who need these tools on Apple mobile platforms.

### How often is RF & Ham Radio Toolkit updated?

The application was last updated on October 16, 2025, with version 5. This indicates a recent update and ongoing development by the developer.

## Version history (last 5 releases)

### 5 — 2025-10-16

Reduced ads + navigation bug fixed

### 4 — 2025-07-26

UI bugs fixed

### 3 — 2025-05-16

Some UI bugs fixed

### 2 — 2025-05-12

UI bugs fixed, rewarded sections fixed

### 1.0 — 2025-05-07

No release notes.

## Apps similar to RF & Ham Radio Toolkit

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| --- | --- | --- | --- |
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| [RadioEquations](https://appshunter.io/ios/app/radioequations/id6451230870) | 5.0 (2) | Free | Utilities |

## More apps by Vladislav Zhirnov

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All apps by Vladislav Zhirnov: https://appshunter.io/developer/1476188065

## Related topics

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*