# Ctzone vs Time Zone Slider

The clearest difference is in-app purchases: Ctzone at none against Time Zone Slider's 3. On price, update cadence, ads and device support there is nothing between them.

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

Ctzone ships an update every 4 weeks, Time Zone Slider every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Ctzone | Time Zone Slider |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/time-zone-slider-world-clock/id6754577560/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 18 MB | 29 MB |
| Requires iOS | **17.6** | 18.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Ali An Nuur](https://appshunter.io/developer/1814014911) | [Volodymyr Strashkov](https://appshunter.io/developer/1845406172) |

## What reviewers say

### Ctzone

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Time Zone Slider

[App page](https://appshunter.io/ios/app/time-zone-slider-world-clock/id6754577560)

Instantly see how time zones change with a simple drag. This app helps you find meeting overlaps and plan international calls without manual calculations. It also offers home screen widgets for quick time checks.

**Highlights:** Real-time time zone slider, Color-coded working hours, Meeting overlap finder, Calendar event creation, Copy times as text, Home screen widget

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Yearly Pro | $12.99 | per year |
| Lifetime Pro | $34.99 | one-time |


## Frequently asked questions

### Is Ctzone free?

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

### Is Time Zone Slider free?

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

### Do Ctzone or Time Zone Slider have ads?

Neither Ctzone nor Time Zone Slider shows ads.

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

Ctzone ships an update every 4 weeks, and Time Zone Slider every 3 weeks. Most recently, Ctzone was updated on October 24, 2026 and Time Zone Slider on October 24, 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.*