# CountDownList vs Simple PDF

The clearest difference is ads: Simple PDF at none against CountDownList's shown. Simple PDF also leads on update cadence (every 3 weeks vs every 10 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CountDownList ships an update every 10 months, Simple PDF every 3 weeks. The most recent releases landed on September 28, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | CountDownList | Simple PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/simple-pdf-pdf-reader/id6746363157/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 25 MB | 12 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Takuya Endo](https://appshunter.io/developer/1601100107) | [Chang Keun Jung](https://appshunter.io/developer/1813307401) |

## What reviewers say

### CountDownList

[App page](https://appshunter.io/ios/app/countdownlist-eventtimer/id6745453926)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple PDF

[App page](https://appshunter.io/ios/app/simple-pdf-pdf-reader/id6746363157)

This application allows users to view, annotate, and edit PDF documents with ease. Features include document management, OCR capabilities, and a built-in scanner. It's designed for students and professionals to stay productive on the go.

**Highlights:** View, annotate, and edit PDFs, Full-text search and navigation, Free-draw and text box annotation, Page reordering and PDF merging, Scan documents with built-in camera, OCR for text extraction, Home screen widget for quick access

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

**In-app purchases:** none


## Frequently asked questions

### Is CountDownList free?

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

### Is Simple PDF free?

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

### Do CountDownList or Simple PDF have ads?

CountDownList shows ads; Simple PDF does not.

### Which is updated more often, CountDownList or Simple PDF?

CountDownList ships an update every 10 months, and Simple PDF every 3 weeks. Most recently, CountDownList was updated on September 28, 2026 and Simple PDF on October 6, 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.*