# Bayes' calculator vs OCR Scanner

The clearest difference is in-app purchases: Bayes' calculator at none against OCR Scanner's 3. Bayes' calculator also leads on device support. OCR Scanner's advantage is update cadence (every 2 months vs every 11 months) and iOS requirement (13.0 vs 15.5). On price there is nothing between them.

Both are free to download. OCR Scanner sells 3 in-app purchases, starting at $4.99 per 7 days. Bayes' calculator asks for nothing beyond the download.

Bayes' calculator ships an update every 11 months, OCR Scanner every 2 months. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Bayes' calculator | OCR Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (5 ratings)](https://appshunter.io/ios/app/bayes-calculator/id1639652828/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 1 MB | 29 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Rosenblum](https://appshunter.io/developer/1639652830) | [Bhavika Vora](https://appshunter.io/developer/1868568509) |

## What reviewers say

### Bayes' calculator

[App page](https://appshunter.io/ios/app/bayes-calculator/id1639652828)

This application provides a straightforward tool for performing calculations based on Bayes' Theorem. It is designed for users who need to apply this statistical concept in their work or studies. The app offers a simple interface for inputting probabilities and obtaining results.

**Highlights:** Bayes' Theorem calculations, Probability input, Result display, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


### OCR Scanner

[App page](https://appshunter.io/ios/app/ocr-scanner-text-and-document/id6761089550)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription Weekly | $4.99 | per 7 days |
| Subscription Monthly | $9.99 | per month |
| Subscription Yearly | $19.99 | per year |


## Frequently asked questions

### Is Bayes' calculator free?

Bayes' calculator is free to download, with no in-app purchases.

### Is OCR Scanner free?

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

### Which is updated more often, Bayes' calculator or OCR Scanner?

Bayes' calculator ships an update every 11 months, and OCR Scanner every 2 months. Most recently, Bayes' calculator was updated on October 23, 2026 and OCR Scanner on October 25, 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.*