# CalDown vs QuickPDF

The clearest difference is ads: CalDown at none against QuickPDF's shown. CalDown also leads on update cadence (weekly vs monthly). QuickPDF's advantage is iOS requirement (13.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. CalDown sells 1 one-off in-app purchase and QuickPDF sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

CalDown ships an update weekly, QuickPDF monthly. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | CalDown | QuickPDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caldown/id6744269741/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 69 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Valentin Haberling](https://appshunter.io/developer/1803412455) | [UNIQUE-EDGE INNOVATIONS LTD.](https://appshunter.io/developer/1896730641) |

## What reviewers say

### CalDown

[App page](https://appshunter.io/ios/app/caldown/id6744269741)

This app transforms your calendar into a real-time timeline, showing your current and upcoming events with live countdowns. It offers customizable widgets for your home and lock screens, and a companion app for Apple Watch, all designed for clarity and focus.

**Highlights:** Real-time event timeline, Live countdowns and progress bars, Home and Lock Screen widgets, Apple Watch companion app, Event notes and checklists, Hide specific event occurrences

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock CalDown Pro | $9.99 | one-time |


### QuickPDF

[App page](https://appshunter.io/ios/app/quickpdf-pdf-tools-and-ai-chat/id6784027939)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QuickPDF Premium (Monthly) | $4.99 | per month |
| QuickPDF Premium (Yearly) | $29.99 | per year |


## Frequently asked questions

### Is CalDown free?

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

### Is QuickPDF free?

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

### Do CalDown or QuickPDF have ads?

QuickPDF shows ads; CalDown does not.

### Which is updated more often, CalDown or QuickPDF?

CalDown ships an update weekly, and QuickPDF monthly. Most recently, CalDown was updated on October 24, 2026 and QuickPDF on October 14, 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.*