# ElectroCalc Pro

> ElectroCalc Pro (iPhone/iPad app by DONGSOO LEE.)

- Source: https://appshunter.io/ios/app/electrocalc-pro/id6758211193 (this page in markdown: same URL + `.md`)
- Developer: [DONGSOO LEE](https://appshunter.io/developer/1868670088)
- Category: Utilities, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 13.0 · 28 MB
- Languages: American English, German (Germany), Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Hong Kong SAR China)
- Released: 2026-01-26
- Data updated: 2026-08-01
- User reviews in markdown: https://appshunter.io/ios/app/electrocalc-pro/id6758211193/reviews.md

## What is ElectroCalc Pro?

ElectroCalc Pro is the essential utility for electronics engineers and hobbyists.
Simplify your daily circuit calculations with this powerful tool.

[Key Features]
1. Basic Electronics
- LED Resistor Calculator
- Voltage Divider Calculator (Vin, R1, R2, Vout)
- LM317 Voltage Regulator Calculator

2. Power & Cables
- Ohm's Law Calculator (Voltage, Current, Resistance, Power)
- AWG (American Wire Gauge) Table & Conversion

3. Battery Tools
- Battery Runtime Calculator
- Battery Configuration Calculator (Series / Parallel)

4. PCB Tools
- PCB Trace Width & Resistance Calculations

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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



## Version history (last 5 releases)

### 1.0.4 — 2026-07-27

Updated age rating response regarding social media

### 1.0.3 — 2026-05-05

[What's New]
- Added License Information: You can now view the open-source license information within the app.

### 1.0.2 — 2026-04-29

[What's New]
- Added support for privacy regulations (GDPR, CCPA).
- Ad system (AdMob) update and optimization.

### 1.0.1 — 2026-02-05

What's New

Performance & Stability Improvements We've optimized internal logic for a smoother and more stable experience.

Bug Fixes Fixed minor bugs and issues reported by users.

### 1.0 — 2026-01-26

No release notes.

## More apps by DONGSOO LEE

- [Super LED Banner](https://appshunter.io/ios/app/super-led-banner/id6757751637)
- [God of Decision - Roulette](https://appshunter.io/ios/app/god-of-decision-roulette/id6757783122)
- [Sports Scoreboards](https://appshunter.io/ios/app/sports-scoreboards/id6757790313)
- [Modbus TCP Station](https://appshunter.io/ios/app/modbus-tcp-station/id6757790321)
- [FieldBus Toolkit](https://appshunter.io/ios/app/fieldbus-toolkit/id6758210279)

All apps by DONGSOO LEE: https://appshunter.io/developer/1868670088

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-01.*