# Unique Days vs PDF OCR Pro

The clearest difference is in-app purchases: PDF OCR Pro at none against Unique Days's 1. PDF OCR Pro also leads on update cadence (fortnightly vs monthly) and ratings volume (6 vs 2). Unique Days's advantage is iOS requirement (12.0 vs 17.0). On price, rating, ads and device support there is nothing between them.

Both are free to download. Unique Days sells 1 one-off in-app purchase. PDF OCR Pro asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Unique Days against 5.0 for PDF OCR Pro. Both are backed by a comparable volume of ratings — 2 and 6 respectively.

Unique Days ships an update monthly, PDF OCR Pro fortnightly. The most recent releases landed on September 8, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | Unique Days | PDF OCR Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/unique-days/id6737198411/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/pdf-ocr-pro/id6738633268/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 61 MB | 6 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [培钦 康](https://appshunter.io/developer/1770425492) | [Layerz Corp.](https://appshunter.io/developer/1617729865) |

## What reviewers say

### Unique Days

[App page](https://appshunter.io/ios/app/unique-days/id6737198411)

Easily track and countdown to important dates with a user-friendly interface and customizable widgets. Visualize upcoming events with a calendar view and enjoy local data storage for privacy and offline access.

**Highlights:** Home screen widgets, Countdown timers, Event reminders, Customizable backgrounds, Calendar view, Local data storage, Intuitive interface

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 终身会员 | $0.99 | one-time |


### 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


## Frequently asked questions

### Is Unique Days free?

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

### Is PDF OCR Pro free?

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

### Which has better reviews, Unique Days or PDF OCR Pro?

Unique Days and PDF OCR Pro are both rated 5.0 out of 5 on the App Store, from 2 and 6 ratings respectively.

### Do Unique Days or PDF OCR Pro have ads?

Neither Unique Days nor PDF OCR Pro shows ads.

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

Unique Days ships an update monthly, and PDF OCR Pro fortnightly. Most recently, Unique Days was updated on September 8, 2026 and PDF OCR Pro on August 17, 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.*