# Watts Amps Volts  Calculator vs AmpCore

The clearest difference is in-app purchases: Watts Amps Volts  Calculator at none against AmpCore's 1. AmpCore's advantage is ads (none vs shown) and update cadence (every 3 days vs every 7 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AmpCore sells 1 in-app purchase, starting at $3.99 per month. Watts Amps Volts  Calculator asks for nothing beyond the download.

Watts Amps Volts  Calculator ships an update every 7 months, AmpCore every 3 days. The most recent releases landed on November 4, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Watts Amps Volts  Calculator | AmpCore |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (52 ratings)](https://appshunter.io/ios/app/watts-amps-volts-calculator/id450813841/reviews)** | — |
| Number of ratings | **52** | — |
| Positive reviews | 68.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 3 days** |
| Monetization | Ad-supported | — |
| Size | 25 MB | 37 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pro Certs Software Ltd](https://appshunter.io/developer/444429696) | [Valiantsin Tsikhamirau](https://appshunter.io/developer/1813594943) |

## What reviewers say

### Watts Amps Volts  Calculator

[App page](https://appshunter.io/ios/app/watts-amps-volts-calculator/id450813841)

This app serves as an advanced electrical power calculator. It allows users to easily compute and convert between Watts, Amps, and Volts for single-phase systems, and kW, Amps, Volts, and Power Factor for three-phase systems. Simply input known values to find the missing one.

**Highlights:** Single-phase power calculations, Three-phase power calculations, Convert Watts, Amps, Volts, Calculate kW and Power Factor, Input any two values to find the third

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### AmpCore

[App page](https://appshunter.io/ios/app/ampcore/id6791554213)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AmpCore 1 month subcription | $3.99 | per month |


## Frequently asked questions

### Is Watts Amps Volts  Calculator free?

Watts Amps Volts  Calculator is free to download, with no in-app purchases.

### Is AmpCore free?

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

### Do Watts Amps Volts  Calculator or AmpCore have ads?

Watts Amps Volts  Calculator shows ads; AmpCore does not.

### Which is updated more often, Watts Amps Volts  Calculator or AmpCore?

Watts Amps Volts  Calculator ships an update every 7 months, and AmpCore every 3 days. Most recently, Watts Amps Volts  Calculator was updated on November 4, 2026 and AmpCore on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*