# Voltage Drop. vs Wire Size & Ampacity Calc

The clearest difference is in-app purchases: Voltage Drop. at none against Wire Size & Ampacity Calc's 3. Voltage Drop. also leads on iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Wire Size & Ampacity Calc sells 3 in-app purchases, starting at $2.99 per month. Voltage Drop. asks for nothing beyond the download.

## The numbers

| Metric | Voltage Drop. | Wire Size & Ampacity Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 18 MB | 9 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eyup Ensar ORAL](https://appshunter.io/developer/6772512446) | [HD YAPIMCILIK VE TEKNOLOJI ITHALAT IHRACAT TICARET LIMITED SIRKETI](https://appshunter.io/developer/1871741424) |

## 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


### Wire Size & Ampacity Calc

[App page](https://appshunter.io/ios/app/wire-size-and-ampacity-calc/id6796341481)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WireSize Pro — Monthly | $2.99 | per month |
| WireSize Pro — Yearly | $14.99 | per year |
| WireSize Pro — Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Voltage Drop. free?

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

### Is Wire Size & Ampacity Calc free?

Wire Size & Ampacity Calc is free to download, with in-app purchases available.

### Do Voltage Drop. or Wire Size & Ampacity Calc have ads?

Neither Voltage Drop. nor Wire Size & Ampacity Calc 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.*