# PDF OCR Pro vs Stacked

The clearest difference is in-app purchases: PDF OCR Pro at none against Stacked's 3. PDF OCR Pro also leads on update cadence (fortnightly vs every 7 months) and rating (5.0 vs 4.6). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Stacked sells 3 in-app purchases, starting at $3.99 per month. PDF OCR Pro asks for nothing beyond the download.

PDF OCR Pro holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 6 and 13 respectively.

PDF OCR Pro ships an update fortnightly, Stacked every 7 months. The most recent releases landed on October 1, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | PDF OCR Pro | Stacked |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/pdf-ocr-pro/id6738633268/reviews)** | [4.6 (13 ratings)](https://appshunter.io/ios/app/stacked-routine-stack-habits/id6740246728/reviews) |
| Number of ratings | 6 | **13** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 7 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 6 MB | 61 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Layerz Corp.](https://appshunter.io/developer/1617729865) | [Tip Tap Apps](https://appshunter.io/developer/1257263778) |

## What reviewers say

### PDF OCR Pro

[App page](https://appshunter.io/ios/app/pdf-ocr-pro/id6738633268)

This app offers a comprehensive suite of tools for managing PDF files. It allows you to extract text using OCR, convert PDFs to images, secure documents with passwords, and merge or split files. It also enables creating PDFs from images and converting webpages into PDF format, all while ensuring your data remains private through offline processing.

**Highlights:** Extract text with OCR, Convert PDF to images, Secure PDFs with passwords, Merge or split PDFs, Create PDFs from images, Convert webpages to PDF, Compress file size

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

**In-app purchases:** none


### Stacked

[App page](https://appshunter.io/ios/app/stacked-routine-stack-habits/id6740246728)

Build powerful daily routines and track habits with this all-in-one task manager. Combine tasks and habits into customized routines, receive step-by-step guidance, and monitor progress. Offers free and premium features to enhance productivity and time management.

**Highlights:** Create customizable routines, Step-by-step routine guidance, Track habits and tasks together, Flexible task types (free/premium), Progress tracking and statistics, Custom notifications and reminders, Habit stacking technique integration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stacked Prime Monthly | $3.99 | per month |
| Stacked Prime Yearly | $17.99 | per year |
| Stacked Prime Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is PDF OCR Pro free?

PDF OCR Pro is free to download, with no in-app purchases.

### Is Stacked free?

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

### Which has better reviews, PDF OCR Pro or Stacked?

PDF OCR Pro is rated higher. PDF OCR Pro averages 5.0 out of 5 from 6 ratings, while Stacked averages 4.6 from 13 ratings.

### Do PDF OCR Pro or Stacked have ads?

Neither PDF OCR Pro nor Stacked shows ads.

### Which is updated more often, PDF OCR Pro or Stacked?

PDF OCR Pro ships an update fortnightly, and Stacked every 7 months. Most recently, PDF OCR Pro was updated on October 1, 2026 and Stacked on September 22, 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.*