# SimpleSigma vs Calculator Notes

The clearest difference is in-app purchases: Calculator Notes at none against SimpleSigma's 2. SimpleSigma's advantage is update cadence (every 6 weeks vs every 12 months). On price, ads, device support and iOS requirement there is nothing between them.

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

SimpleSigma ships an update every 6 weeks, Calculator Notes every 12 months. The most recent releases landed on September 11, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | SimpleSigma | Calculator Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/calculator-notes-spreadsheet/id1668268383/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 6 weeks** | Every 12 months |
| Monetization | — | Ad-supported |
| Size | 7 MB | 11 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MUTSUAKI KIKUCHI](https://appshunter.io/developer/1874283283) | [FugaPiyo Inc.](https://appshunter.io/developer/1497887610) |

## What reviewers say

### SimpleSigma

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

**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 |


### Calculator Notes

[App page](https://appshunter.io/ios/app/calculator-notes-spreadsheet/id1668268383)

This app combines a calculator with spreadsheet functionality, allowing users to automatically sum item values. It supports unlimited folders and notes, with features like goal setting and batch operations. Widgets are available for home and lock screens.

**Highlights:** Automatic total value calculation, Unlimited folders, notes, and items, CSV output and sharing, Goal setting and progress tracking, Batch operations (copy, duplicate, color coding), Home & lock screen widgets, Dark mode

**In-app purchases:** none


## Frequently asked questions

### Is SimpleSigma free?

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

### Is Calculator Notes free?

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

### Do SimpleSigma or Calculator Notes have ads?

Both SimpleSigma and Calculator Notes show ads.

### Which is updated more often, SimpleSigma or Calculator Notes?

SimpleSigma ships an update every 6 weeks, and Calculator Notes every 12 months. Most recently, SimpleSigma was updated on September 11, 2026 and Calculator Notes on June 1, 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.*