LaTeX OCR vs Sigmakey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LaTeX OCR
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Transform handwritten or computer-printed math formulas into perfect LaTeX. Share your LaTeX code instantly. Copy to clipboard, export to your favorite TeX editor, or share directly with colleagues Terms of use: https://craft-my-world-apps.blogspot.com/p/terms-of-use-latex-ocr.html
Sigmakey
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.
- 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
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Sigmakey is a math keyboard for people who need to type actual math, anywhere you can type at all. Fractions, exponents, roots, Greek letters, and matrices sit one tap away, and the cursor moves right into a numerator or an exponent, so scientific notation looks the way it should. - A full math keyboard layout that works in any app with a text field - A two-dimensional field with a cursor that steps into fractions and powers - Type LaTeX, plain Unicode, or a rendered image, whichever the app expects - Everything typeset on device, with no network - Search for a symbol, or grab a recent or a favorite Drop an equation into a note, a message, or a homework app without hunting through menus. Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vTDX9pxPOlUJl_skVUHPi99mAw0y2B2BYd_v1mJkoF3xW3rlOcW5KlYd4t93MMbbGhctSTnBTy7d_l6/pub Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | LaTeX OCR | Sigmakey |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 69 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Luis Andres Velasquez Cedeno | Andrii Bashta |
In-app purchases
LaTeX OCR
- Weekly$3.997 Days
- Monthly$9.991 Month
Sigmakey
- Sigmakey Pro$9.99
