# Voltage Drop. vs Voltage Drop Calculator

The clearest difference is in-app purchases: Voltage Drop. at none against Voltage Drop Calculator's 1. Voltage Drop. also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.6). On price and ads there is nothing between them.

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

## The numbers

| Metric | Voltage Drop. | Voltage Drop Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 18 MB | 2 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Eyup Ensar ORAL](https://appshunter.io/developer/6772512446) | [Kirill Bereznev](https://appshunter.io/developer/6800891315) |

## What reviewers say

### Voltage Drop.

[App page](https://appshunter.io/ios/app/voltage-drop/id6780509345)

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

**In-app purchases:** none


### Voltage Drop Calculator

[App page](https://appshunter.io/ios/app/voltage-drop-calculator-nec/id6800891313)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Voltage Drop Pro Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Voltage Drop. free?

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

### Is Voltage Drop Calculator free?

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

### Do Voltage Drop. or Voltage Drop Calculator have ads?

Neither Voltage Drop. nor Voltage Drop Calculator 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.*