# Amateur Radio Toolkit

> Amateur radio design and calculation toolkit for hobbyists. (iPhone/iPad app by Electronial.)

- Source: https://appshunter.io/ios/app/amateur-radio-toolkit/id1375297506 (this page in markdown: same URL + `.md`)
- Developer: [Electronial](https://appshunter.io/developer/1350247180)
- Category: Education, Productivity
- Price: Free with in-app purchases
- Rating: 4.00/5 from 366 App Store ratings · 61 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 17 MB
- Languages: American English, Dutch
- Released: 2018-04-26
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/amateur-radio-toolkit/id1375297506/reviews.md

## What is Amateur Radio Toolkit?

Amateur Radio Toolkit is the best app for ham radio hobbyists. It contains many calculators to help you design radios and antennas for all your projects.

Tools:
Coordinate calculator - Find your latitude and longitude by entering your maindenhead square.
Grid square calculator - Find your maindenhead square by entering your latitude and longitude
Distance calculator - Find the distance between two maidenhead squares
Unit converter - Convert between units
Location - Find your location
Dipole antenna - Calculate the optimal lengths of a dipole antenna for a given frequency
Vertical antenna - Calculate the optimal lengths of a vertical antenna for a given frequency
Cubical quad antenna - Calculate the optimal lengths of a cubical quad antenna for a given frequency
Inverted vee antenna - Calculate the optimal lengths of an inverted vee antenna for a given frequency
Ground plane antenna - Calculate the optimal lengths of a ground plane antenna for a given frequency
J pole antenna - Calculate the optimal lengths of a J pole antenna for a given frequency
VSWR - Convert between VSWR, Refection coefficient, return loss and mismatch loss
Three element Yagi antenna - Calculate the optimal lengths of a three element Yagi antenna for a given frequency
Seven element Yagi antenna - Calculate the optimal lengths of a seven element Yagi antenna for a given frequency
Wavelength frequency converter - Convert between wavelength and frequency
Air core inductor - Calculate the inductance or lengths of an air core inductor
Low pass filter - Calculate the units of an RC or RL LPF circuit
High pass filter - Calculate the units of an RC or RL HPF circuit
Ohm's law - Convert between voltage, current, resistance and power by entering two
Reactance - Calculate the reactance of a capacitor or inductor
Decibel calculator - Convert between decibel values or calculate dB by entering the power or voltage
Voltage divider - Calculate the output voltage or resistance of one resistor
Resistor Color codes - Find the resistance of a resistor by entering the colors of the bands
Resistors in parallel - Calculate the resistance of resistors in parallel
Resistors in series - Calculate the resistance of resistors in series
Capacitors in parallel - Calculate the capacitance of capacitors in parallel
Capacitors in series - Calculate the capacitance of capacitors in series
Coaxial cable - Calculate the properties of a coaxial cable
Inductors in series - Calculate the inductance of inductors in series
Inductors in parallel - Calculate the inductance of inductors in parallel
Full wave loop antenna - Calculate the optimal lengths of a full wave loop antenna for a given frequency
ERP and EIRP - Calculate and convert ERP and EIRP
Half wave coax balun - Calculate the optimal length of a half wave coax balun for a given frequency
Small magnetic loop - Calculate the optimal lengths of a small magnetic loop for a given frequency
Narrowband balun - Calculate the inductance and capacitance of a narrowband balun
Pi attenuator - Calculate the values of the resistors by entering the attenuation and impedance
T attenuator - Calculate the values of the resistors by entering the attenuation and impedance

## Key features

- Antenna design calculators (dipole, Yagi, quad, etc.)
- Electrical circuit calculators (Ohm's law, filters, inductors)
- Location and grid square tools
- Unit and wavelength converters
- VSWR and decibel calculations
- Resistor and capacitor calculations

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro version | $1.99 | one-time |


## What do users think of Amateur Radio Toolkit?

Overall sentiment: mixed

**Pros**

- 📚 Comprehensive antenna and RF calculation reference
- 🚀 Quick access to formulas without web searching
- 🎯 Useful for both beginners and experienced operators
- 📱 Convenient pocket-sized tool for field work
- 🔄 Unit conversion capabilities (metric/imperial)
- 💡 Educational resource for understanding radio fundamentals
- ⚡ Fast and accurate calculations when working

**Cons**

- 🐛 Frequent app crashes, especially during upgrade
- 🎨 Poor UI/UX design with overlapping text and inaccessible controls
- 🔴 Many calculator functions don't work or are non-functional
- 💳 Payment/upgrade system broken - repeated payment requests
- 📖 Lack of user instructions or documentation
- 🎨 Poor color scheme (blue text on green background)
- ⚙️ Unit conversion requires manual scrolling per field
- 📱 Layout issues on various iPhone models
- 🔧 Incomplete magloop feature despite pro fee
- ❌ Restore purchase option doesn't work
- 🔴 iOS compatibility issues with recent updates

**Commonly reported bugs**

- App crashes when attempting to upgrade to pro version
- App crashes on specific coordinate entries (grid square)
- Frequency unit selector reverts after leaving screen
- Calculators don't respond to input (J-pole, inductor)
- Text overlapping and misalignment on iOS 16+
- Measurement scroll wheels don't function properly
- App frozen or unresponsive on data input
- Pro version not appearing in App Store after purchase
- Restore purchase functionality broken
- Incompatibility with iOS 17
- Calculations off by up to 17%
- Inconsistent measurements between mm, cm, and m

**Most requested features**

- Global metric/imperial toggle in settings
- Phasing calculator for cable harness
- Gigahertz frequency option for iOS (exists on Android)
- Ground plane dipole calculations
- Gamma matching calculations for magloops
- Capacitance and wavelength calculations
- Inner loop sizing for magloops
- Volts to watts to dBm conversion for 50ohm signals
- Dark mode or adjustable color schemes
- Comprehensive user guide/instructions
- Ad-free experience clarity for paid version

## Recent user reviews (10 of 61)

All indexed reviews: https://appshunter.io/ios/app/amateur-radio-toolkit/id1375297506/reviews.md

### 5/5 — First Rate

*2026-02-27, version 1.1*

Excellent app. Have been using it for a long time. Best of 73’s. Tom K4NAM

### 2/5 — Magloop feature -requires $1.99 fee -yet almost nil capability

*2026-01-26*

Whilst the App required $1.99 fee to go “PRO”. The magloop feature which required the PRO fee is so basic as to be practically useless. This feature really only suggests a wide min/max range for outer (Main) loop. Period.  Nothing else!  Nothing on Gamma matching, nothing on calculating Z, wavelength, capacitance, or even anything about the simpler inner (driver) loop sizing etc.

Be aware that anyone who comes for this App specifically regarding designing magloops - There is very little here for you at the moment. I’m hoping the author(s) will see this and consider adding more capabilities. Seem a shame not to.

I’m leaving 2-Stars because I see other features in the app but have not yet tried to use them.

### 1/5 — Request Payment again

*2026-01-24, version 1.1*

I paid the $1.99 for the pro and it keeps asking me to pay again.  It won’t let me choose restore.

### 1/5 — Does nothing!

*2025-11-22, version 1.1*

Can not input data.  App seems frozen.

### 3/5 — Crashes

*2025-10-17*

The app has potential, however when I decided to upgrade to the pro version to unlock the remaining features, the link crashes the app. I can’t complete the upgrade and there’s no pro version available in the App Store that I can find. Too bad for the app developer. You almost made some money with this thing.

### 5/5 — Greatest app ever for understanding radio fundamentals!

*2025-07-23*

You have gone above and beyond and helpingRadio operators understand how wave move through the air!How to build an antenna the correct way and all the different types of antennas that can be made d.I.y.Thank you very much for all the love and time you put in this application and I look forward to seeing what you’re gonna come up with next!          Michael Amend

### 5/5 — Great app

*2025-05-28*

It’s a great app for figuring out antennas.   I’ve used it quite a bit in my hobbies.

### 2/5 — No frequency in gigahertz?

*2025-04-02, version 1.1*

No gigahertz option for frequency in apple app but there is in android.

### 4/5 — VE3BEK

*2025-03-30, version 1.1*

Very useful information

### 1/5 — Not useable

*2025-02-21, version 1.1*

The app UI is a mess. Screens are under headers and the controls can’t be seen or be operated. When I went to see what the “Pro” version was about the app blew up. It isn’t useable in this state. Sad, could have a great tool.

## Frequently asked questions about Amateur Radio Toolkit

### What does the Amateur Radio Toolkit app do?

The Amateur Radio Toolkit app offers a wide range of calculators and tools specifically designed for amateur radio hobbyists. It assists users in designing and optimizing antennas, performing various electrical calculations, and converting between different units and measurements relevant to radio projects.

### What are some key features of this app?

Key features include calculators for designing various types of antennas such as dipoles, Yagis, and cubical quads. It also provides tools for electrical calculations like Ohm's law, filter design, and inductor/capacitor calculations, along with location tools and unit converters.

### Is this app free to use?

The app is available for free, but it includes in-app purchases. This means that while you can download and use many of its features without cost, certain advanced tools or functionalities might require a purchase to unlock.

### Who is the target audience for this app?

This application is intended for amateur radio hobbyists and enthusiasts who are involved in the design, construction, and optimization of radio equipment and antennas. It serves as a practical tool for both beginners and experienced radio operators.

### What kind of antenna calculations can I perform?

You can calculate optimal lengths for a variety of antennas, including dipole, vertical, cubical quad, inverted vee, ground plane, J pole, three-element Yagi, seven-element Yagi, full wave loop, and small magnetic loop antennas. It also includes calculations for half-wave coax baluns.

## Version history (last 2 releases)

### 1.1 — 2022-12-15

bug fixes

### 1.0 — 2018-04-26

This app has been updated by Apple to display the Apple Watch app icon.

## Apps similar to Amateur Radio Toolkit

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Ham Radio Prep](https://appshunter.io/ios/app/ham-radio-prep/id1525090989) | 4.8 (2,164) | Free | Education |
| [Memorization:Spaced Repetition](https://appshunter.io/ios/app/memorizationspaced-repetition/id6443955900) | — | Free | Education |
| [Worksheet Creator - Teacher AI](https://appshunter.io/ios/app/worksheet-creator-teacher-ai/id1669473620) | 1.3 (3) | Free | Education |
| [JLI Shluchim Resources](https://appshunter.io/ios/app/jli-shluchim-resources/id1666652660) | — | Free | Education |
| [Redação Nota 1000 ENEM](https://appshunter.io/ios/app/redacao-nota-1000-enem/id1671597780) | — | Free | Education |
| [AKE Teacher](https://appshunter.io/ios/app/ake-teacher/id1673653860) | — | Free | Education |

## More apps by Electronial

- [Electronics Toolkit!](https://appshunter.io/ios/app/electronics-toolkit/id1350248261)
- [Electronics Toolkit Pro](https://appshunter.io/ios/app/electronics-toolkit-pro/id1350353308)
- [Physics Toolkit Pro](https://appshunter.io/ios/app/physics-toolkit-pro/id1353781414)
- [Physics Toolkit](https://appshunter.io/ios/app/physics-toolkit/id1353781994)
- [Math Derivatives](https://appshunter.io/ios/app/math-derivatives/id1435052476)

All apps by Electronial: https://appshunter.io/developer/1350247180

## Related topics

[amateur radio toolkit](https://appshunter.io/ios/topics/amateur-radio-toolkit) · [antenna calculator](https://appshunter.io/ios/topics/antenna-calculator) · [amrt amateur radio rf toolkit](https://appshunter.io/ios/topics/amrt-amateur-radio-rf-toolkit) · [ham radio tools](https://appshunter.io/ios/topics/ham-radio-tools) · [antenna tool](https://appshunter.io/ios/topics/antenna-tool) · [ham radio reference](https://appshunter.io/ios/topics/ham-radio-reference) · [amateur radio](https://appshunter.io/ios/topics/amateur-radio) · [hamrs](https://appshunter.io/ios/topics/hamrs) · [amateur radio toolkit 2025](https://appshunter.io/ios/topics/amateur-radio-toolkit-2025) · [sstv slow scan tv](https://appshunter.io/ios/topics/sstv-slow-scan-tv) · [my gmrs](https://appshunter.io/ios/topics/my-gmrs) · [echolink](https://appshunter.io/ios/topics/echolink)

---

*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 2026-08-29.*