# Voltage Regulator vs Volt AI Assistant.

The clearest difference is update cadence: Volt AI Assistant. at every 4 weeks against Voltage Regulator's every 9 months. Voltage Regulator's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Voltage Regulator sells 1 one-off in-app purchase and Volt AI Assistant. sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Voltage Regulator ships an update every 9 months, Volt AI Assistant. every 4 weeks. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Voltage Regulator | Volt AI Assistant. |
| --- | --- | --- |
| Price | Free | Free |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 weeks** |
| Monetization | Freemium | — |
| Size | 3 MB | 52 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Robert Calvert](https://appshunter.io/developer/1845053002) |

## 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 |


### Volt AI Assistant.

[App page](https://appshunter.io/ios/app/volt-ai-assistant/id6753792067)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Volt Premium Monthly | $5.99 | per month |
| Volt Premium Annual | $49.99 | per year |


## Frequently asked questions

### Is Voltage Regulator free?

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

### Is Volt AI Assistant. free?

Volt AI Assistant. is free to download, with in-app purchases available.

### Do Voltage Regulator or Volt AI Assistant. have ads?

Neither Voltage Regulator nor Volt AI Assistant. shows ads.

### Which is updated more often, Voltage Regulator or Volt AI Assistant.?

Voltage Regulator ships an update every 9 months, and Volt AI Assistant. every 4 weeks. Most recently, Voltage Regulator was updated on October 24, 2026 and Volt AI Assistant. on October 11, 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.*