# Unique Days vs PDF OCR

The clearest difference is rating: Unique Days at 5.0 against PDF OCR's 4.4. Unique Days also leads on iOS requirement (12.0 vs 17.0). PDF OCR's advantage is in-app purchases (none vs 1) and ratings volume (7 vs 2). On price, update cadence, 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 asks for nothing beyond the download.

Unique Days holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 2 and 7 respectively.

Unique Days ships an update monthly, PDF OCR every 3 weeks. The most recent releases landed on September 23, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Unique Days | PDF OCR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/unique-days/id6737198411/reviews)** | [4.4 (7 ratings)](https://appshunter.io/ios/app/pdf-ocr-scanner-and-editor/id6738633268/reviews) |
| Number of ratings | 2 | **7** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 61 MB | 7 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

[App page](https://appshunter.io/ios/app/pdf-ocr-scanner-and-editor/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, Family Sharing, 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 free?

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

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

Unique Days is rated higher. Unique Days averages 5.0 out of 5 from 2 ratings, while PDF OCR averages 4.4 from 7 ratings.

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

Neither Unique Days nor PDF OCR shows ads.

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

Unique Days ships an update monthly, and PDF OCR every 3 weeks. Most recently, Unique Days was updated on September 23, 2026 and PDF OCR on October 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.*