# CountDownList vs BookViewer

The clearest difference is ads: BookViewer at none against CountDownList's shown. 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.

## The numbers

| Metric | CountDownList | BookViewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | — |
| Size | 25 MB | 2 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Takuya Endo](https://appshunter.io/developer/1601100107) | [jun murase](https://appshunter.io/developer/1867130231) |

## What reviewers say

### CountDownList

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

**Features:** macOS Compatibility

**In-app purchases:** none


### BookViewer

[App page](https://appshunter.io/ios/app/bookviewer/id6760602781)

**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 BookViewer free?

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

### Do CountDownList or BookViewer have ads?

CountDownList shows ads; BookViewer does not.

---

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