# World Time Zones App vs Time Difference Converter

The clearest difference is in-app purchases: Time Difference Converter at none against World Time Zones App's 4. Time Difference Converter also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. World Time Zones App sells 4 in-app purchases, starting at $0.99 per 7 days. Time Difference Converter asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 19, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | World Time Zones App | Time Difference Converter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 45 MB | 7 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Vasilii Polovnikov](https://appshunter.io/developer/1716165883) | [Alper Sumer Guc](https://appshunter.io/developer/1896672915) |

## What reviewers say

### World Time Zones App

[App page](https://appshunter.io/ios/app/world-time-zones-app/id6772571983)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium · 1 week | $0.99 | per 7 days |
| Premium · 1 month | $1.99 | per month |
| Premium · 1 year | $9.99 | per year |
| Premium · Lifetime | $19.99 | one-time |


### Time Difference Converter

[App page](https://appshunter.io/ios/app/time-difference-converter/id6773206221)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is World Time Zones App free?

World Time Zones App is free to download, with in-app purchases available.

### Is Time Difference Converter free?

Time Difference Converter is free to download, with no in-app purchases.

### Do World Time Zones App or Time Difference Converter have ads?

World Time Zones App shows ads; Time Difference Converter does not.

### Which is updated more often, World Time Zones App or Time Difference Converter?

World Time Zones App ships an update every 3 weeks, and Time Difference Converter every 3 weeks. Most recently, World Time Zones App was updated on September 19, 2026 and Time Difference Converter 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.*