# RF vs InductorCalc

The clearest difference is price: InductorCalc at $0.99 against RF's $7.99. InductorCalc also leads on review sentiment (100% vs 91%). RF's advantage is update cadence (every 4 months vs every 23 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

RF costs $7.99 and InductorCalc $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RF ships an update every 4 months, InductorCalc every 23 months. The most recent releases landed on September 22, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | RF | InductorCalc |
| --- | --- | --- |
| Price | $7.99 | **$0.99** |
| Rating | **[4.9 (22 ratings)](https://appshunter.io/ios/app/rf-toolbox-pro/id593044099/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 91.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 23 months |
| Monetization | Paid | Paid |
| Size | 92 MB | 17 MB |
| Requires iOS | **11.1** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marcus Roskosch](https://appshunter.io/developer/334053438) | [oskari saarinen](https://appshunter.io/developer/1234576917) |

## What reviewers say

### RF

[App page](https://appshunter.io/ios/app/rf-toolbox-pro/id593044099)

This app provides over 90 specialized tools for high-frequency electronics, catering to RF professionals, radio amateurs, and students. It offers calculations for PCB traces, filters, impedance, and more, with ongoing updates and new features planned.

**Highlights:** PCB Trace Width and Impedance, LC/L/T/Pi Match Calculation, Coax Cable Calculations, Amplifier and Attenuator Cascade, SWR/Reflection/Return Loss Conversion, Filter Design (Butterworth, Chebyshev), RF Units Conversion

**In-app purchases:** none


### InductorCalc

[App page](https://appshunter.io/ios/app/inductorcalc/id1409402075)

Calculate essential parameters for custom inductors and coils. Input dimensions like turns, length, and diameter to instantly get inductance, Q-factor, wire length, and DC resistance. Ideal for electronics enthusiasts and students designing custom components.

**Highlights:** Calculate inductance (L), Calculate Q-factor at operating frequency, Calculate total wire length, Calculate DC resistance, Supports multiple SI units

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RF free?

RF costs $7.99, with no in-app purchases.

### Is InductorCalc free?

InductorCalc costs $0.99, with no in-app purchases.

### Do RF or InductorCalc have ads?

Neither RF nor InductorCalc shows ads.

### Which is updated more often, RF or InductorCalc?

RF ships an update every 4 months, and InductorCalc every 23 months. Most recently, RF was updated on September 22, 2026 and InductorCalc on June 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*