# World Sky Clock vs Pollution Guardian

The clearest difference is in-app purchases: Pollution Guardian at none against World Sky Clock's 1. World Sky Clock's advantage is iOS requirement (7.1 vs 16.2). On price, ads and device support there is nothing between them.

Both are free to download. World Sky Clock sells 1 one-off in-app purchase. Pollution Guardian asks for nothing beyond the download.

## The numbers

| Metric | World Sky Clock | Pollution Guardian |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/world-sky-clock/id978353549/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 51 MB |
| Requires iOS | **7.1** | 16.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [mash studio](https://appshunter.io/developer/299490816) | [Pollution srl](https://appshunter.io/developer/1448845103) |

## What reviewers say

### World Sky Clock

[App page](https://appshunter.io/ios/app/world-sky-clock/id978353549)

Displays the current time and sky color for cities worldwide. Track sunrise, sunset, and twilight times, along with sun position and city coordinates. Offers detailed sky color changes over time.

**Highlights:** World city time display, Current sky color, Sunrise and sunset times, Sun position and orbit, City coordinates and altitude, Twilight times, Sky color change tracking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $1.99 | one-time |


### Pollution Guardian

[App page](https://appshunter.io/ios/app/pollution-guardian/id1448845104)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is World Sky Clock free?

World Sky Clock is free to download, with in-app purchases available.

### Is Pollution Guardian free?

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

### Do World Sky Clock or Pollution Guardian have ads?

Neither World Sky Clock nor Pollution Guardian shows ads.

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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.*