# CuCalc vs Voltage Drop.

The clearest difference is in-app purchases: Voltage Drop. at none against CuCalc's 1. Voltage Drop. also leads on device support and iOS requirement (13.0 vs 17.6). On price there is nothing between them.

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

## The numbers

| Metric | CuCalc | Voltage Drop. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | Every 3 weeks | — |
| Size | 3 MB | 18 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ANDELKO PADOVIC](https://appshunter.io/developer/1893648829) | [Eyup Ensar ORAL](https://appshunter.io/developer/6772512446) |

## What reviewers say

### CuCalc

[App page](https://appshunter.io/ios/app/cucalc/id6762284389)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CuCalc Pro | $9.99 | one-time |


### Voltage Drop.

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

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

**In-app purchases:** none


## Frequently asked questions

### Is CuCalc free?

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

### Is Voltage Drop. free?

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

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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.*