# Sigma Notepad Calculator vs InkNote

The clearest difference is ads: Sigma Notepad Calculator at none against InkNote's shown. InkNote's advantage is update cadence (every 10 days vs every 4 weeks) and device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Sigma Notepad Calculator sells 3 in-app purchases, starting at $1.99 per month and InkNote sells 1 in-app purchase, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

Sigma Notepad Calculator ships an update every 4 weeks, InkNote every 10 days. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Sigma Notepad Calculator | InkNote |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Every 10 days** |
| Size | 15 MB | 21 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Soules Studio Ltd](https://appshunter.io/developer/1883253392) | [TES MED LINK GmbH](https://appshunter.io/developer/6801455749) |

## What reviewers say

### Sigma Notepad Calculator

[App page](https://appshunter.io/ios/app/sigma-notepad-calculator/id6768903761)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $14.99 | per year |
| Lifetime | $29.99 | one-time |


### InkNote

[App page](https://appshunter.io/ios/app/inknote-notes-and-documents/id6807056776)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| InkNote Annual | $9.99 | per year |


## Frequently asked questions

### Is Sigma Notepad Calculator free?

Sigma Notepad Calculator is free to download, with in-app purchases available.

### Is InkNote free?

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

### Do Sigma Notepad Calculator or InkNote have ads?

InkNote shows ads; Sigma Notepad Calculator does not.

### Which is updated more often, Sigma Notepad Calculator or InkNote?

Sigma Notepad Calculator ships an update every 4 weeks, and InkNote every 10 days. Most recently, Sigma Notepad Calculator was updated on October 8, 2026 and InkNote on October 13, 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.*