# PDF Reader vs Task Todo List & Calendar

The clearest difference is in-app purchases: PDF Reader at none against Task Todo List & Calendar's 5. PDF Reader also leads on update cadence (every 6 days vs every 2 months) and chart position (#203 vs unranked). Task Todo List & Calendar's advantage is ads (none vs shown) and iOS requirement (13.0 vs 16). On price and device support there is nothing between them.

Both are free to download. Task Todo List & Calendar sells 5 in-app purchases, starting at $2.99 per month. PDF Reader asks for nothing beyond the download.

PDF Reader ships an update every 6 days, Task Todo List & Calendar every 2 months. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PDF Reader | Task Todo List & Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (93 ratings)](https://appshunter.io/ios/app/pdf-reader-viewer/id6746119431/reviews)** | — |
| Number of ratings | **93** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 2 months |
| Monetization | Ad-supported | — |
| Best chart rank | **#203** | — |
| Size | 116 MB | 67 MB |
| Requires iOS | 16 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [All About Housing LLC](https://appshunter.io/developer/1773925650) | [Rashmi Varsani](https://appshunter.io/developer/1749930901) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-viewer/id6746119431)

**Currently charting:** #203 Top Free · Utilities (US App Store)

This app provides a privacy-focused way to view, organize, and manage PDF files on your device. It offers tools for merging, splitting, securing documents, and converting images to PDF, all processed locally for enhanced data safety.

**Highlights:** View and organize PDF files, Merge and split PDFs, Secure documents with passwords, Convert images to PDF, Built-in document scanner, Local data processing for privacy

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

**In-app purchases:** none


### Task Todo List & Calendar

[App page](https://appshunter.io/ios/app/task-todo-list-and-calendar/id6761091536)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Weekly Plan | $6.99 | per 7 days |
| Monthly Plan | $19.99 | per month |
| Yearly | $25.99 | per year |
| Yearly Plan | $79.99 | per year |


## Frequently asked questions

### Is PDF Reader free?

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

### Is Task Todo List & Calendar free?

Task Todo List & Calendar is free to download, with in-app purchases available.

### Do PDF Reader or Task Todo List & Calendar have ads?

PDF Reader shows ads; Task Todo List & Calendar does not.

### Which is updated more often, PDF Reader or Task Todo List & Calendar?

PDF Reader ships an update every 6 days, and Task Todo List & Calendar every 2 months. Most recently, PDF Reader was updated on November 8, 2026 and Task Todo List & Calendar on November 5, 2026.

---

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