# Ctzone vs Time Zone Difference Planner

The clearest difference is in-app purchases: Ctzone at none against Time Zone Difference Planner's 3. Ctzone also leads on update cadence (every 4 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Time Zone Difference Planner sells 3 in-app purchases, starting at $2.99 per 7 days. Ctzone asks for nothing beyond the download.

Ctzone ships an update every 4 weeks, Time Zone Difference Planner every 4 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Ctzone | Time Zone Difference Planner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 4 months |
| Size | 18 MB | 5 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ali An Nuur](https://appshunter.io/developer/1814014911) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### Ctzone

[App page](https://appshunter.io/ios/app/ctzone/id6748931770)

**Features:** macOS Compatibility

**In-app purchases:** none


### Time Zone Difference Planner

[App page](https://appshunter.io/ios/app/time-zone-difference-planner/id6772262657)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| World Clock Weekly | $2.99 | per 7 days |
| Remote Work Yearly | $14.99 | per year |
| UTC Converter Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Ctzone free?

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

### Is Time Zone Difference Planner free?

Time Zone Difference Planner is free to download, with in-app purchases available.

### Do Ctzone or Time Zone Difference Planner have ads?

Neither Ctzone nor Time Zone Difference Planner shows ads.

### Which is updated more often, Ctzone or Time Zone Difference Planner?

Ctzone ships an update every 4 weeks, and Time Zone Difference Planner every 4 months. Most recently, Ctzone was updated on October 24, 2026 and Time Zone Difference Planner on October 26, 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.*