# LaTeX OCR vs Sigmakey

The clearest difference is iOS requirement: LaTeX OCR at 13.0 against Sigmakey's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. LaTeX OCR sells 2 in-app purchases, starting at $3.99 per 7 days and Sigmakey sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | LaTeX OCR | Sigmakey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/sigmakey-math-keyboard/id6788025133/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | — | Free with in-app purchases |
| Size | 69 MB | 13 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Luis Andres Velasquez Cedeno](https://appshunter.io/developer/1780611825) | [Andrii Bashta](https://appshunter.io/developer/1547467775) |

## What reviewers say

### LaTeX OCR

[App page](https://appshunter.io/ios/app/latex-ocr/id6738396043)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Monthly | $9.99 | per month |


### Sigmakey

[App page](https://appshunter.io/ios/app/sigmakey-math-keyboard/id6788025133)

This utility provides a specialized keyboard for typing mathematical expressions, including fractions, roots, and Greek letters, directly within any app. It supports LaTeX, Unicode, and image output, with on-device processing for privacy and speed.

**Highlights:** Full math keyboard layout, Two-dimensional cursor for exponents/numerators, Type LaTeX, Unicode, or rendered image, On-device typesetting, no network required, Symbol search, recent, and favorite symbols

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sigmakey Pro | $9.99 | one-time |


## Frequently asked questions

### Is LaTeX OCR free?

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

### Is Sigmakey free?

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

### Do LaTeX OCR or Sigmakey have ads?

Neither LaTeX OCR nor Sigmakey shows ads.

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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.*