# PencilCalc vs NibbleCalc

The clearest difference is in-app purchases: PencilCalc at none against NibbleCalc's 1. PencilCalc also leads on update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

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

PencilCalc ships an update every 2 days, NibbleCalc every 2 months. The most recent releases landed on September 28, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | PencilCalc | NibbleCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Size | 4 MB | 4 MB |
| Requires iOS | 18.6 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YASUHIDE MATSUMOTO](https://appshunter.io/developer/1850732929) | [LiChuan Lin](https://appshunter.io/developer/1895785594) |

## What reviewers say

### PencilCalc

[App page](https://appshunter.io/ios/app/pencilcalc/id6754930533)

**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 |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is PencilCalc free?

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

### Is NibbleCalc free?

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

### Do PencilCalc or NibbleCalc have ads?

Neither PencilCalc nor NibbleCalc shows ads.

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

PencilCalc ships an update every 2 days, and NibbleCalc every 2 months. Most recently, PencilCalc was updated on September 28, 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.*