# TTD vs PDF Reader

The clearest difference is in-app purchases: TTD at none against PDF Reader's 2. TTD also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.6). PDF Reader's advantage is update cadence (every 10 days vs every 5 weeks) and chart position (#27 vs unranked). On price and device support there is nothing between them.

Both are free to download. PDF Reader sells 2 in-app purchases, starting at $5.99 per 7 days. TTD asks for nothing beyond the download.

TTD ships an update every 5 weeks, PDF Reader every 10 days. Both last shipped on November 12, 2026.

## The numbers

| Metric | TTD | PDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (569 ratings)](https://appshunter.io/ios/app/pdf-reader-ocr-scan-edit/id6754001880/reviews)** |
| Number of ratings | — | **569** |
| Positive reviews | — | 42.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#27** |
| Size | 41 MB | 72 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dogukan Aras](https://appshunter.io/developer/1780363644) | [Fuzhou Jiange Technology Co., Ltd.](https://appshunter.io/developer/1821346905) |

## What reviewers say

### TTD

[App page](https://appshunter.io/ios/app/ttd/id6738357176)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-ocr-scan-edit/id6754001880)

**Currently charting:** #27 Top Free · Productivity (US App Store)

This mobile app acts as a PDF office assistant, offering features for editing, scanning, and optical character recognition. It allows for easy document management, page manipulation, and conversion of images and paper documents into editable digital files.

**Highlights:** PDF Editing, Image to PDF conversion, Import PDF files, OCR Text Recognition, Add, delete, rearrange pages, Filters, highlights, annotations

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Reader Ad-Free | $5.99 | per 7 days |
| PDF Reader Ad-Free | $29.99 | per year |


## Frequently asked questions

### Is TTD free?

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

### Is PDF Reader free?

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

### Do TTD or PDF Reader have ads?

PDF Reader shows ads; TTD does not.

### Which is updated more often, TTD or PDF Reader?

TTD ships an update every 5 weeks, and PDF Reader every 10 days. Most recently, TTD was updated on November 12, 2026 and PDF Reader on November 12, 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.*