Comparison

RF vs RadioEquations

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RF

Features
Read full description

This tool works as an equation solver : you can choose the parameter (variable) to be computed, and fix the other parameters. It also supports multiple systems of units : American (US) and metric (SI). 1) Quarter Wave Antenna : you can compute the length of a quarter wave antenna or solve other parameters (frequency or wave length). 2) Path Loss in Free Space : you can compute the path loss in free space or solve other parameters (frequency, wave length, or distance). 3) VSWR & S11 : you can compute the voltage standing wave ratio or solve other parameters (modulus of reflection coefficient (linear or logarithmic), argument of reflection coefficient, real part of input impedance, imaginary part of input impedance). 4) Power Converter : you can convert the power between [dBm] or [W] units, and compute the tension [dBuV] (into 50 [ohms]). 5) Reflected & Delivered Power : you can compute the ratio of the delivered power to input power or solve other parameters (ratio of reflected power to input power, modulus of reflection coefficient, voltage standing wave ratio). 6) Microstrip Transmission Line : you can compute the characteristic impedance of a microstrip transmission line, or solve other parameters (relative permittivity, track’s thickness, distance from the track to the ground plane, or track’s width). 7) Stripline Transmission Line : you can compute the characteristic impedance of a stripline transmission line, or solve other parameters (relative permittivity, track’s thickness, distance from the track to one reference plane, or track’s width). Some remarks : -The microstrip solver is based on the IPC-D-317A design guidelines. -The stripline solver is based on the IPC-D-317A design guidelines.

About

RadioEquations

This utility app provides quick access to essential functions for radio telecommunications professionals. It includes helpful descriptions to ensure users understand each function, even if they are new to the field.

Highlights
  • Access to common radio telecommunications functions
  • Accompanying descriptions for comprehension
  • Designed for professionals in the field
  • Easy-to-use interface
Features
Read full description

Easily access commonly used functions in the radio telecommunications field. Accompanying descriptions to help with comprehension for those that may be unfamiliar with the functions

Screenshots

RF4 screens
RadioEquations4 screens

Verdict

The call

The clearest difference is price: RadioEquations at Free against RF's $0.99. RadioEquations also leads on update cadence (every 3 months vs every 8 months). RF's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 16.4). On ads 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

CostPrice · In-app purchases · Ads · Monetization

RadioEquations is free to download; RF costs $0.99 up front. RadioEquations sells 2 one-off in-app purchases. RF asks for nothing beyond the download.

UpkeepUpdate frequency

RF ships an update every 8 months, RadioEquations every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
RF versus RadioEquations: the parameters behind the verdict, then further details
ParameterRFRadioEquations
Price$0.99Free — better
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 8 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better16.4
Further details — not scored
Size6 MB9 MB
Age rating4+4+
DeveloperJulien GeissbuehlerRobert J Sarvis Jr

In-app purchases

None

RF

No in-app purchases

2 purchases

RadioEquations

One-time2
  • Unlock Advanced Functions$0.99
  • Unlock AC Functions$0.99

Questions

Is RF free?
RF costs $0.99, with no in-app purchases.
Is RadioEquations free?
RadioEquations is free to download, with in-app purchases available.
Do RF or RadioEquations have ads?
Neither RF nor RadioEquations shows ads.
Which is updated more often, RF or RadioEquations?
RF ships an update every 8 months, and RadioEquations every 3 months. Most recently, RF was updated on November 1, 2026 and RadioEquations on November 3, 2026.

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