# AcidBase Calc vs VIPro

The clearest difference is iOS requirement: AcidBase Calc at 9.1 against VIPro's 12.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | AcidBase Calc | VIPro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Size | 4 MB | 15 MB |
| Requires iOS | **9.1** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Henry Ford Health System](https://appshunter.io/developer/393430586) | [Cadent powered by Syneos Health](https://appshunter.io/developer/1770298911) |

## What reviewers say

### AcidBase Calc

[App page](https://appshunter.io/ios/app/acidbase-calc/id1477845851)

**Features:** macOS Compatibility

**In-app purchases:** none


### VIPro

[App page](https://appshunter.io/ios/app/vipro/id6714480288)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AcidBase Calc free?

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

### Is VIPro free?

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

### Do AcidBase Calc or VIPro have ads?

Neither AcidBase Calc nor VIPro 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.*