# SimpleSigma+ vs Thought Organizer

The clearest difference is price: Thought Organizer at Free against SimpleSigma+'s $3.99. Thought Organizer also leads on update cadence (every 5 days vs every 3 weeks). SimpleSigma+'s advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Thought Organizer is free to download; SimpleSigma+ costs $3.99 up front. Thought Organizer sells 3 in-app purchases, starting at $1.99 per month. SimpleSigma+ asks for nothing beyond the download.

SimpleSigma+ ships an update every 3 weeks, Thought Organizer every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SimpleSigma+ | Thought Organizer |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Paid | — |
| Size | 1 MB | 12 MB |
| Requires iOS | 17.1 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [MUTSUAKI KIKUCHI](https://appshunter.io/developer/1874283283) | [Takao Sunagawa](https://appshunter.io/developer/1876201799) |

## What reviewers say

### SimpleSigma+

[App page](https://appshunter.io/ios/app/simplesigma-plus/id1522991950)

This app simplifies numerical tabulation with three distinct spreadsheet types for various calculation needs. It offers quick data input, immediate recalculation, and convenient features like CSV import/export and tax settings.

**Highlights:** Three spreadsheet types (Simple, Duplex, Shopping), Quick data input and immediate recalculation, Swipeable keyboard for cell navigation, Customizable consumption tax settings, Save and reuse calculation data, CSV data import and export

**Features:** macOS Compatibility

**In-app purchases:** none


### Thought Organizer

[App page](https://appshunter.io/ios/app/thought-organizer-goalgrid/id6781972184)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GoalGrid Premium Monthly | $1.99 | per month |
| GoalGrid Premium Yearly | $5.99 | per year |
| GoalGrid premium lifetime | $9.99 | one-time |


## Frequently asked questions

### Is SimpleSigma+ free?

SimpleSigma+ costs $3.99, with no in-app purchases.

### Is Thought Organizer free?

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

### Do SimpleSigma+ or Thought Organizer have ads?

Thought Organizer shows ads; SimpleSigma+ does not.

### Which is updated more often, SimpleSigma+ or Thought Organizer?

SimpleSigma+ ships an update every 3 weeks, and Thought Organizer every 5 days. Most recently, SimpleSigma+ was updated on November 3, 2026 and Thought Organizer on October 31, 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.*