# Voltage Regulator vs Tenio

The clearest difference is in-app purchases: Tenio at none against Voltage Regulator's 1. Tenio also leads on rating (5.0 vs 4.8) and update cadence (every 4 months vs every 9 months). Voltage Regulator's advantage is iOS requirement (12.0 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Voltage Regulator sells 1 one-off in-app purchase. Tenio asks for nothing beyond the download.

Tenio holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

Voltage Regulator ships an update every 9 months, Tenio every 4 months. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Voltage Regulator | Tenio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (5 ratings)](https://appshunter.io/ios/app/voltage-regulator/id1149145965/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tenio-electronics-toolkit-lab/id6757969551/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 months** |
| Monetization | Freemium | **Free** |
| Size | 3 MB | 7 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Samuel Rodas Aroche](https://appshunter.io/developer/1706040833) |

## 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 |


### Tenio

[App page](https://appshunter.io/ios/app/tenio-electronics-toolkit-lab/id6757969551)

This app provides a suite of calculators and converters for electronics enthusiasts, students, and makers. It helps users quickly solve circuit tasks, decode component markings, and calculate values for resistors and capacitors, speeding up project development.

**Highlights:** Resistor color code calculator, SMD resistor code converter, LED resistor calculator, Series & parallel resistor calculator, SMD capacitor code calculator, Series & parallel capacitor calculator

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Voltage Regulator free?

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

### Is Tenio free?

Tenio is free to download, with no in-app purchases.

### Which has better reviews, Voltage Regulator or Tenio?

Tenio is rated higher. Voltage Regulator averages 4.8 out of 5 from 5 ratings, while Tenio averages 5.0 from 2 ratings.

### Do Voltage Regulator or Tenio have ads?

Neither Voltage Regulator nor Tenio shows ads.

### Which is updated more often, Voltage Regulator or Tenio?

Voltage Regulator ships an update every 9 months, and Tenio every 4 months. Most recently, Voltage Regulator was updated on October 10, 2026 and Tenio on October 17, 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.*