RF Calculators vs iFTx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RF Calculators
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.
- 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
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Do all your RF calculations using this application. Here is a list of some of the calculators in this app: Attenuator Calculators - Pi Attenuator Calculator - Tee Attenuator Calculator - Balanced Attenuator Calculator - Bridged Tee Attenuator Calculator - Reflection Attenuator Calculator Unit Converters - dBm To Watt Calculator - Watt To dBm Calculator RF Propagation - Link Budget Calculator - Antenna Down Tilt Calculator - Down Tilt Coverage Radius Other RF Calculators - Coax Calculator - MicroStrip Calculator - Cascaded Noise Figure Calculator - Resonant Frequency Calculator - Skin Depth Calculator - VSWR Calculator - Reflection Coefficient Calculator - Capacitive Reactance and Admittance Calculator - Free Space Path Loss - Inductive Reactance and Admittance Calculator - Microstrip Patch Antenna Calculator - Wavelength Calculator - RF Power Density and many more...
iFTx
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.
- FT8 and FT4 digital modes
- Portable digital communication
- Global operator connections
- User-friendly interface
- Integrated QSO logging
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Introducing iFTx: The Essential iOS App for FT8 and FT4 Digital Modes! - Seamlessly Engage: iFTx brings FT8 and FT4 digital modes to your iOS device, enabling convenient and portable digital communication. - Anytime, Anywhere: Enjoy the flexibility to connect with operators globally from the comfort of your iOS device. - Effortless Operation: Navigate the user-friendly interface for quick setup and real-time messaging. - Reliable Performance: Experience clear signals and adapt to changing propagation conditions with ease. - Log Your Success: Keep track of your contacts effortlessly with integrated QSO logging.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 September 29, 2026 respectively.
| Parameter | RF Calculators | iFTx |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 3.0 (1 ratings) | 4.2 (70 ratings) — better |
| Positive reviews | 33.3% of reviews | 71.8% of reviews — better |
| Number of ratings | 1 | 70 — better |
| Update frequency | Every 4 days — better | Every 6 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 37 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | everything RF LLP | Christoph Nadig |
Customer experience
RF Calculators
iFTx
In-app purchases
RF Calculators
No in-app purchases
iFTx
No in-app purchases
