# ProCalc vs NibbleCalc

The clearest difference is ads: NibbleCalc at none against ProCalc's shown. ProCalc's advantage is update cadence (monthly vs every 2 months) and iOS requirement (13.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. ProCalc sells 4 one-off in-app purchases and NibbleCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ProCalc ships an update monthly, NibbleCalc every 2 months. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ProCalc | NibbleCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Size | 34 MB | 4 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Penquinzoo Limited](https://appshunter.io/developer/1551454365) | [LiChuan Lin](https://appshunter.io/developer/1895785594) |

## What reviewers say

### ProCalc

[App page](https://appshunter.io/ios/app/procalc-calculator-app/id6756341509)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Flat themes | $3.99 | one-time |
| Graphs and pdf export. | $3.99 | one-time |
| Unlock Neon themes | $4.99 | one-time |
| All  themes | $4.99 | one-time |


### NibbleCalc

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

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is ProCalc free?

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

### Is NibbleCalc free?

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

### Do ProCalc or NibbleCalc have ads?

ProCalc shows ads; NibbleCalc does not.

### Which is updated more often, ProCalc or NibbleCalc?

ProCalc ships an update monthly, and NibbleCalc every 2 months. Most recently, ProCalc was updated on October 2, 2026 and NibbleCalc on October 10, 2026.

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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.*