# ProAovo vs NibbleCalc

The clearest difference is in-app purchases: ProAovo at none against NibbleCalc's 1. ProAovo also leads on iOS requirement (15.6 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. NibbleCalc sells 1 one-off in-app purchase. ProAovo asks for nothing beyond the download.

## The numbers

| Metric | ProAovo | NibbleCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 20 MB | 4 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [小青 龚](https://appshunter.io/developer/1523194442) | [LiChuan Lin](https://appshunter.io/developer/1895785594) |

## What reviewers say

### ProAovo

[App page](https://appshunter.io/ios/app/proaovo/id6764290937)

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

**In-app purchases:** none


### NibbleCalc

[App page](https://appshunter.io/ios/app/nibblecalc-dev-calculator/id6765700593)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $2.99 | one-time |


## Frequently asked questions

### Is ProAovo free?

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

### Is NibbleCalc free?

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

### Do ProAovo or NibbleCalc have ads?

Neither ProAovo nor NibbleCalc shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*