# InductorCalc vs leaDCalc

The clearest difference is price: leaDCalc at Free against InductorCalc's $0.99. leaDCalc also leads on update cadence (every 11 months vs every 23 months). InductorCalc's advantage is iOS requirement (12.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

leaDCalc is free to download; InductorCalc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

InductorCalc ships an update every 23 months, leaDCalc every 11 months. The most recent releases landed on June 1, 2026 and June 21, 2026 respectively.

## The numbers

| Metric | InductorCalc | leaDCalc |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/leadcalc/id1487509498/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 11 months** |
| Monetization | Paid | **Free** |
| Size | 17 MB | 157 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [oskari saarinen](https://appshunter.io/developer/1234576917) | [Vaughn Warriner](https://appshunter.io/developer/1487509497) |

## What reviewers say

### 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


### leaDCalc

[App page](https://appshunter.io/ios/app/leadcalc/id1487509498)

This app calculates direct current power lead sizes for telephone company central office power plants. It uses a circular slide rule format to determine allowable voltage drops and wire sizes based on specific system parameters.

**Highlights:** Circular slide rule format, Calculates allowable voltage drops, Determines DC power lead sizes, Supports 48V and 24V DC systems, References Bell System calculations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is InductorCalc free?

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

### Is leaDCalc free?

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

### Do InductorCalc or leaDCalc have ads?

Neither InductorCalc nor leaDCalc shows ads.

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

InductorCalc ships an update every 23 months, and leaDCalc every 11 months. Most recently, InductorCalc was updated on June 1, 2026 and leaDCalc on June 21, 2026.

---

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