# WorldClock vs PDF Tools

The clearest difference is ads: WorldClock at none against PDF Tools's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. WorldClock sells 1 one-off in-app purchase and PDF Tools sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

WorldClock ships an update every 9 days, PDF Tools every 4 days. The most recent releases landed on September 21, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | WorldClock | PDF Tools |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | Paid | — |
| Size | 2 MB | 46 MB |
| Requires iOS | 17.6 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [创宏 陈](https://appshunter.io/developer/1884920634) | [少泽 梁](https://appshunter.io/developer/897112791) |

## What reviewers say

### WorldClock

[App page](https://appshunter.io/ios/app/worldclock/id6765791132)

This app helps you quickly check global times and time differences to schedule cross-time zone communications. It supports over 100 cities, offers desktop widgets, and allows for offline use without registration.

**Highlights:** World clock with 100+ cities, Global time and date comparison, Meeting scheduling tool, Desktop widgets, Digital and analog clock styles, Offline functionality, Multi-language support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime membership of World Clock | $0.99 | one-time |


### PDF Tools

[App page](https://appshunter.io/ios/app/pdf-tools-split-merge-comp/id6787011787)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month VIP | $2.99 | per month |
| One-year membership | $4.99 | per year |
| Permanent VIP | $12.99 | one-time |


## Frequently asked questions

### Is WorldClock free?

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

### Is PDF Tools free?

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

### Do WorldClock or PDF Tools have ads?

PDF Tools shows ads; WorldClock does not.

### Which is updated more often, WorldClock or PDF Tools?

WorldClock ships an update every 9 days, and PDF Tools every 4 days. Most recently, WorldClock was updated on September 21, 2026 and PDF Tools on September 11, 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.*