# TBT Groups vs PDF Reader PDF Viewer

The clearest difference is in-app purchases: TBT Groups at none against PDF Reader PDF Viewer's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PDF Reader PDF Viewer sells 2 in-app purchases, starting at $0.99 per month. TBT Groups asks for nothing beyond the download.

TBT Groups ships an update fortnightly, PDF Reader PDF Viewer every 3 weeks. The most recent releases landed on September 15, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | TBT Groups | PDF Reader PDF Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/pdf-reader-pdf-viewer/id6470454445/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 44 MB | 13 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Ngan Le](https://appshunter.io/developer/840301173) | [Mohit Rudani](https://appshunter.io/developer/1673702969) |

## What reviewers say

### TBT Groups

[App page](https://appshunter.io/ios/app/tbt-groups/id6459303666)

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

**In-app purchases:** none


### PDF Reader PDF Viewer

[App page](https://appshunter.io/ios/app/pdf-reader-pdf-viewer/id6470454445)

Edit, sign, and share PDF documents on your iPhone. Import files from your gallery, convert them to PDF, and manage all your documents in one place. Offers a simple interface for reading, annotating, and creating PDFs.

**Highlights:** Edit and sign PDF documents, Import and convert to PDF, Read, comment, and annotate PDFs, Create new PDF files, Share documents as PDF, Offline PDF viewing

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads for 1 Month | $0.99 | per month |
| Remove ads for 1 Year | $3.99 | per year |


## Frequently asked questions

### Is TBT Groups free?

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

### Is PDF Reader PDF Viewer free?

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

### Do TBT Groups or PDF Reader PDF Viewer have ads?

Neither TBT Groups nor PDF Reader PDF Viewer shows ads.

### Which is updated more often, TBT Groups or PDF Reader PDF Viewer?

TBT Groups ships an update fortnightly, and PDF Reader PDF Viewer every 3 weeks. Most recently, TBT Groups was updated on September 15, 2026 and PDF Reader PDF Viewer on June 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*