# Watts vs VoltRef Pro

The clearest difference is in-app purchases: Watts at none against VoltRef Pro's 2. Watts also leads on device support (3 vs 1) and iOS requirement (8.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. VoltRef Pro sells 2 in-app purchases, starting at $1.99 per 7 days. Watts asks for nothing beyond the download.

## The numbers

| Metric | Watts | VoltRef Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/watts/id958596712/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Free | — |
| Size | 1 MB | 19 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Code Smart LLC](https://appshunter.io/developer/460440673) | [Ersel Tarhan](https://appshunter.io/developer/1093545232) |

## What reviewers say

### Watts

[App page](https://appshunter.io/ios/app/watts/id958596712)

Calculate the cost of running electrical devices over time. This simple tool helps you understand your energy consumption expenses.

**Highlights:** Calculate device running costs, Easy to use interface, Track energy expenses over time, Simple utility tool

**Features:** macOS Compatibility

**In-app purchases:** none


### VoltRef Pro

[App page](https://appshunter.io/ios/app/voltref-pro-electrician-code/id6796596602)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $1.99 | per 7 days |
| Annual Premium | $19.99 | per year |


## Frequently asked questions

### Is Watts free?

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

### Is VoltRef Pro free?

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

### Do Watts or VoltRef Pro have ads?

Neither Watts nor VoltRef Pro shows ads.

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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.*