# Voltage Regulator vs Learn ESP32 Programming Pro

The clearest difference is price: Voltage Regulator at Free against Learn ESP32 Programming Pro's $4.99. Voltage Regulator also leads on iOS requirement (12.0 vs 16.0). Learn ESP32 Programming Pro's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 9 months). On ads and device support there is nothing between them.

Voltage Regulator is free to download; Learn ESP32 Programming Pro costs $4.99 up front. Voltage Regulator sells 1 one-off in-app purchase. Learn ESP32 Programming Pro asks for nothing beyond the download.

Voltage Regulator ships an update every 9 months, Learn ESP32 Programming Pro monthly. Both last shipped on September 16, 2026.

## The numbers

| Metric | Voltage Regulator | Learn ESP32 Programming Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/voltage-regulator/id1149145965/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | Freemium | — |
| Size | 3 MB | 25 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Voltage Regulator

[App page](https://appshunter.io/ios/app/voltage-regulator/id1149145965)

Calculate resistor combinations for adjustable voltage regulators. This tool helps electronics hobbyists and professionals determine desired output voltages and resistor values. Results can be exported and shared easily.

**Highlights:** Adjustable voltage regulator support, Calculate resistor combinations, Determine resistor values, Export results to CSV, Share CSV via iCloud/AirDrop

**Features:** Vision Pro support

**In-app purchases (1)**

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


### Learn ESP32 Programming Pro

[App page](https://appshunter.io/ios/app/learn-esp32-programming-pro/id6777794811)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Voltage Regulator free?

Voltage Regulator is free to download, with in-app purchases available.

### Is Learn ESP32 Programming Pro free?

Learn ESP32 Programming Pro costs $4.99, with no in-app purchases.

### Do Voltage Regulator or Learn ESP32 Programming Pro have ads?

Neither Voltage Regulator nor Learn ESP32 Programming Pro shows ads.

### Which is updated more often, Voltage Regulator or Learn ESP32 Programming Pro?

Voltage Regulator ships an update every 9 months, and Learn ESP32 Programming Pro monthly. Most recently, Voltage Regulator was updated on September 16, 2026 and Learn ESP32 Programming Pro on September 16, 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.*