# Voltage Regulator

> Voltage regulator calculator for electronics hobbyists and engineers. (iPhone/iPad app by Siu Yuen Ho.)

- Source: https://appshunter.io/ios/app/voltage-regulator/id1149145965 (this page in markdown: same URL + `.md`)
- Developer: [Siu Yuen Ho](https://appshunter.io/developer/814088527)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Rating: 4.80/5 from 5 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 3 MB
- Languages: American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2016-09-12
- Data updated: 2026-08-28
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/voltage-regulator/id1149145965/reviews.md

## What is Voltage Regulator?

This app is a voltage regulator calculator. It is is suitable for electronics hobbyist, electronic engineers or professionals.

Features
* Support 3-terminals adjustable voltage regulators  
* To find out combinations of 2 resistors making a desired output voltage
* Calculate resistor values / output voltage
* Export results to CSV file
* Share CSV file to iCloud Drive (For iOS8 or later)
* Share CSV file via AirDrop (For iOS7 or later)

Feature in PRO only
* Calculate thermal resistance of heatsink
* Selectable 1%, 5% resistors
* No ads
* No limitations

## Key features

- Adjustable voltage regulator support
- Calculate resistor combinations
- Determine resistor values
- Export results to CSV
- Share CSV via iCloud/AirDrop

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock Pro features | $1.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/voltage-regulator/id1149145965/reviews.md

### 5/5 — Y

*2020-01-02*

Nice App i love it

## Frequently asked questions about Voltage Regulator

### What is Voltage Regulator used for?

Voltage Regulator is a tool designed to help users calculate resistor combinations for adjustable voltage regulators. It assists in finding the correct resistor values to achieve a desired output voltage, making it useful for electronics hobbyists and professionals.

### What are the features of Voltage Regulator?

Voltage Regulator supports 3-terminal adjustable voltage regulators, allows calculation of resistor values for desired output voltages, and enables exporting results to CSV files for sharing via iCloud Drive or AirDrop.

### Is Voltage Regulator free to use?

The basic version of Voltage Regulator is free to download and use. However, certain advanced features, such as calculating thermal resistance of heatsinks and selecting specific resistor percentages, are available in the PRO version.

### What devices does Voltage Regulator support?

Voltage Regulator is available for iPhone, iPad, and iPod devices, as indicated by its compatibility with iOS.

### How often is Voltage Regulator updated?

The app was last updated on May 4, 2025, indicating active development and support. The latest version is 1.4.0.

### What is the age rating for Voltage Regulator?

Voltage Regulator has an age rating of 4+, making it suitable for a wide range of users interested in electronics.

### Does Voltage Regulator have ads?

The free version of Voltage Regulator does not contain advertisements. The PRO version also explicitly states 'No ads'.

### How can I share my calculations from Voltage Regulator?

You can export your calculation results from Voltage Regulator to a CSV file. This file can then be shared via iCloud Drive on iOS 8 or later, or via AirDrop on iOS 7 or later.

## Version history (last 5 releases)

### 1.4.0 — 2025-05-04

Fix minor bugs

### 1.3.5 — 2024-03-26

Fix minor bugs

### 1.3.0 — 2020-02-24

Fix minor bugs

### 1.2.0 — 2019-12-18

Support dark mode

### 1.1.1 — 2018-10-10

Fix minor bugs

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## More apps by Siu Yuen Ho

- [Easy Ohm's Law](https://appshunter.io/ios/app/easy-ohms-law/id814088524)
- [RC Circuit Pro](https://appshunter.io/ios/app/rc-circuit-pro/id824145786)
- [RC Circuit](https://appshunter.io/ios/app/rc-circuit/id824460716)
- [Resistor Tools Pro](https://appshunter.io/ios/app/resistor-tools-pro/id825620924)
- [Resistor Tools](https://appshunter.io/ios/app/resistor-tools/id826045228)
- [Timer 555 Calculator Pro](https://appshunter.io/ios/app/timer-555-calculator-pro/id833443125)

All apps by Siu Yuen Ho: https://appshunter.io/developer/814088527

## Related topics

[regulator](https://appshunter.io/ios/topics/regulator)

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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 2026-08-28.*