# SimpleSigma vs CellNotes

The clearest difference is in-app purchases: CellNotes at none against SimpleSigma's 2. CellNotes also leads on ads (none vs shown) and iOS requirement (15.1 vs 26.0). On price, update cadence and device support there is nothing between them.

Both are free to download. SimpleSigma sells 2 in-app purchases, starting at $2.99 per month. CellNotes asks for nothing beyond the download.

SimpleSigma ships an update every 6 weeks, CellNotes every 3 weeks. Both last shipped on October 7, 2026.

## The numbers

| Metric | SimpleSigma | CellNotes |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 31 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MUTSUAKI KIKUCHI](https://appshunter.io/developer/1874283283) | [Takafumi Terasaki](https://appshunter.io/developer/6785186297) |

## What reviewers say

### SimpleSigma

[App page](https://appshunter.io/ios/app/simplesigma/id1522264347)

This app offers a versatile calculator with three distinct table types for various needs, from simple sums to complex quantity-based calculations. It features intuitive input, auto-saving, and CSV export. An optional Pro version removes ads, unlocks unlimited tables, and adds advanced statistics and OCR receipt scanning.

**Highlights:** Three distinct table types (Simple, Duplex, Shopping), Auto-totaling and quick sum calculations, Swipe keyboard for cell navigation, CSV data export, Auto-save functionality, Optional Pro version with advanced features

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SimpleSigma Pro (Monthly) | $2.99 | per month |
| SimpleSigma Pro (Yearly) | $29.99 | per year |


### CellNotes

[App page](https://appshunter.io/ios/app/cellnotes/id6785186295)

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

**In-app purchases:** none


## Frequently asked questions

### Is SimpleSigma free?

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

### Is CellNotes free?

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

### Do SimpleSigma or CellNotes have ads?

SimpleSigma shows ads; CellNotes does not.

### Which is updated more often, SimpleSigma or CellNotes?

SimpleSigma ships an update every 6 weeks, and CellNotes every 3 weeks. Most recently, SimpleSigma was updated on October 7, 2026 and CellNotes on October 7, 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.*