# Doc vs SimpleSigma

The clearest difference is review sentiment: SimpleSigma at 67% against Doc's 33%. Doc's advantage is iOS requirement (15.0 vs 26.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Doc sells 3 one-off in-app purchases and SimpleSigma sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Doc ships an update monthly, SimpleSigma every 6 weeks. The most recent releases landed on October 21, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Doc | SimpleSigma |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (21 ratings)](https://appshunter.io/ios/app/doc-image-to-excel-converter/id1503451690/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 32.5% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 36 MB | 7 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Muhammad Shahid](https://appshunter.io/developer/1503451689) | [MUTSUAKI KIKUCHI](https://appshunter.io/developer/1874283283) |

## What reviewers say

### Doc

[App page](https://appshunter.io/ios/app/doc-image-to-excel-converter/id1503451690)

This app uses OCR to extract text and table data from images, converting them into editable text, spreadsheets, or PDFs. It supports batch scanning, handwriting recognition, and translation, making it ideal for digitizing documents, notes, and financial information.

**Highlights:** Image to Text Conversion, Image to Excel/Spreadsheet/PDF, Batch Scanning, Tabular Data Extraction, Multi-language OCR, Handwriting Recognition, Secure Documents

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tier 1, Credit + No Ads | $2.99 | one-time |
| Tier 2, Credit + No Ads | $4.99 | one-time |
| Tier 3, Credit + No Ads | $6.99 | one-time |


### 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 |


## Frequently asked questions

### Is Doc free?

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

### Is SimpleSigma free?

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

### Do Doc or SimpleSigma have ads?

Both Doc and SimpleSigma show ads.

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

Doc ships an update monthly, and SimpleSigma every 6 weeks. Most recently, Doc was updated on October 21, 2026 and SimpleSigma 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.*