# RF Calculators vs iFTx

The clearest difference is price: RF Calculators at Free against iFTx's $1.99. RF Calculators also leads on update cadence (every 4 days vs every 6 months) and iOS requirement (12.0 vs 15.0). iFTx's advantage is rating (4.2 vs 3.0) and review sentiment (72% vs 33%). On in-app purchases and device support there is nothing between them.

RF Calculators is free to download; iFTx costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iFTx holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: iFTx has 70 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 33% of RF Calculators's written reviews are positive against 72% of iFTx's.

RF Calculators ships an update every 4 days, iFTx every 6 months. The most recent releases landed on September 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | RF Calculators | iFTx |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/rf-calculators-everything-rf/id1559692740/reviews) | **[4.2 (70 ratings)](https://appshunter.io/ios/app/iftx/id6446093115/reviews)** |
| Number of ratings | 1 | **70** |
| Positive reviews | 33.3% of reviews | **71.8% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 6 months |
| Monetization | Ad-supported | **Free** |
| Size | 37 MB | 7 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [everything RF LLP](https://appshunter.io/developer/1559692742) | [Christoph Nadig](https://appshunter.io/developer/1275170431) |

## What reviewers say

### RF Calculators

[App page](https://appshunter.io/ios/app/rf-calculators-everything-rf/id1559692740)

This application provides a comprehensive suite of tools for radio frequency (RF) calculations. It includes various attenuator calculators, unit converters, RF propagation tools, and other specialized RF calculators for engineers and hobbyists.

**Highlights:** Attenuator calculators (Pi, Tee, Balanced, etc.), Unit converters (dBm to Watt, Watt to dBm), RF propagation tools (Link Budget, Antenna Down Tilt), Specialized RF calculators (Coax, MicroStrip, VSWR), Extensive list of RF calculation functions

**In-app purchases:** none


### iFTx

[App page](https://appshunter.io/ios/app/iftx/id6446093115)

This app enables seamless communication using FT8 and FT4 digital modes directly from your iOS device. Enjoy portable digital connections, effortless operation with a user-friendly interface, and reliable performance for global contact.

**Highlights:** FT8 and FT4 digital modes, Portable digital communication, Global operator connections, User-friendly interface, Integrated QSO logging

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RF Calculators free?

RF Calculators is free to download, with no in-app purchases.

### Is iFTx free?

iFTx costs $1.99, with no in-app purchases.

### Which has better reviews, RF Calculators or iFTx?

iFTx is rated higher. RF Calculators averages 3.0 out of 5 from 1 ratings, while iFTx averages 4.2 from 70 ratings.

### Do RF Calculators or iFTx have ads?

RF Calculators shows ads; iFTx does not.

### Which is updated more often, RF Calculators or iFTx?

RF Calculators ships an update every 4 days, and iFTx every 6 months. Most recently, RF Calculators was updated on September 24, 2026 and iFTx on October 16, 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.*