# OCR vs ConvertCalc

The clearest difference is ads: OCR at none against ConvertCalc's shown. OCR also leads on iOS requirement (12.4 vs 17.0). ConvertCalc's advantage is update cadence (every 8 days vs every 3 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. OCR sells 2 in-app purchases, starting at $2.99 per 7 days and ConvertCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

OCR ships an update every 3 months, ConvertCalc every 8 days. The most recent releases landed on November 9, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | OCR | ConvertCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/convertcalc/id6756512186/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 8 days** |
| Monetization | — | Free with in-app purchases |
| Size | 23 MB | 28 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Arda Emin Cimen](https://appshunter.io/developer/1652033405) | [Michael Riehl](https://appshunter.io/developer/1861093934) |

## What reviewers say

### OCR

[App page](https://appshunter.io/ios/app/ocr-image-to-text-and-pdf-scan/id6755685372)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly pro plan | $2.99 | per 7 days |
| Annual pro plan | $14.99 | per year |


### ConvertCalc

[App page](https://appshunter.io/ios/app/convertcalc/id6756512186)

This app combines a powerful calculator with an advanced unit converter, offering over 200 units across 19 categories. It allows for unified calculations and conversions in one step, with features like live currency exchange and date conversions. An optional pro version unlocks advanced customization and organizational tools.

**Highlights:** Unified calculation and conversion workflow, Over 200 units across 19 categories, Live currency conversion, Multiple calendar system conversions, Age calculator, Customizable themes and layouts, Offline functionality (excluding live currency)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ConvertCalc Pro | $8.99 | one-time |


## Frequently asked questions

### Is OCR free?

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

### Is ConvertCalc free?

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

### Do OCR or ConvertCalc have ads?

ConvertCalc shows ads; OCR does not.

### Which is updated more often, OCR or ConvertCalc?

OCR ships an update every 3 months, and ConvertCalc every 8 days. Most recently, OCR was updated on November 9, 2026 and ConvertCalc on October 30, 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.*