# Clockwise vs Zill

The clearest difference is in-app purchases: Clockwise at none against Zill's 1. Clockwise also leads on ads (none vs shown) and iOS requirement (16.1 vs 18.0). Zill's advantage is update cadence (every 11 days vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. Zill sells 1 one-off in-app purchase. Clockwise asks for nothing beyond the download.

Clockwise ships an update every 6 weeks, Zill every 11 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Clockwise | Zill |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (18 ratings)](https://appshunter.io/ios/app/clockwise-time-zone-tracker/id6470056395/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 92.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Monetization | Free | — |
| Size | 35 MB | 14 MB |
| Requires iOS | **16.1** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Brittany Petrova](https://appshunter.io/developer/1712922919) | [Tariq Al-aqrabawi](https://appshunter.io/developer/1877383192) |

## What reviewers say

### Clockwise

[App page](https://appshunter.io/ios/app/clockwise-time-zone-tracker/id6470056395)

Easily track time zones for friends, family, and colleagues worldwide. Features dynamic backgrounds, personalized photos, and home-screen widgets for at-a-glance updates. Supports over 200k locations, even offline, and syncs across devices via iCloud.

**Highlights:** Automatic time zone detection, Time scrubbing for planning, Dynamic sky backgrounds, Personalized contact photos, Home-screen widgets, Daylight Saving Time alerts, Offline location database

**In-app purchases:** none


### Zill

[App page](https://appshunter.io/ios/app/zill-sun-and-shade/id6815185313)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zill Pro | $5.99 | one-time |


## Frequently asked questions

### Is Clockwise free?

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

### Is Zill free?

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

### Do Clockwise or Zill have ads?

Zill shows ads; Clockwise does not.

### Which is updated more often, Clockwise or Zill?

Clockwise ships an update every 6 weeks, and Zill every 11 days. Most recently, Clockwise was updated on November 3, 2026 and Zill on November 6, 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.*