# ElectroCalc Pro vs Inductor Design Pro

The clearest difference is ads: Inductor Design Pro at none against ElectroCalc Pro's shown. Inductor Design Pro also leads on update cadence (every 3 weeks vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. ElectroCalc Pro sells 1 one-off in-app purchase and Inductor Design Pro sells 1 in-app purchase, starting at $29.99 per year. Whichever you choose, the download price is not the number that matters.

ElectroCalc Pro ships an update every 3 months, Inductor Design Pro every 3 weeks. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ElectroCalc Pro | Inductor Design Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 27 MB | 9 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DONGSOO LEE](https://appshunter.io/developer/1868670088) | [建忠 徐](https://appshunter.io/developer/1871049057) |

## What reviewers say

### ElectroCalc Pro

[App page](https://appshunter.io/ios/app/electrocalc-pro/id6758211193)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Inductor Design Pro

[App page](https://appshunter.io/ios/app/inductor-design-pro/id6758878884)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $29.99 | per year |


## Frequently asked questions

### Is ElectroCalc Pro free?

ElectroCalc Pro is free to download, with in-app purchases available.

### Is Inductor Design Pro free?

Inductor Design Pro is free to download, with in-app purchases available.

### Do ElectroCalc Pro or Inductor Design Pro have ads?

ElectroCalc Pro shows ads; Inductor Design Pro does not.

### Which is updated more often, ElectroCalc Pro or Inductor Design Pro?

ElectroCalc Pro ships an update every 3 months, and Inductor Design Pro every 3 weeks. Most recently, ElectroCalc Pro was updated on October 24, 2026 and Inductor Design Pro on October 10, 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.*