# Know Time Zones vs World Time Clock Master

The clearest difference is in-app purchases: Know Time Zones at none against World Time Clock Master's 13. Know Time Zones also leads on iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. World Time Clock Master sells 10 in-app purchases, starting at $2.99 per month. Know Time Zones asks for nothing beyond the download.

## The numbers

| Metric | Know Time Zones | World Time Clock Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (839 ratings)](https://appshunter.io/ios/app/world-time-clock-master/id6448859727/reviews)** |
| Number of ratings | — | **839** |
| Positive reviews | — | 65.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Monetization | — | Subscription |
| Size | 3 MB | 236 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Robert Li](https://appshunter.io/developer/903884223) | [Alex Komarov Inc.](https://appshunter.io/developer/364741805) |

## What reviewers say

### Know Time Zones

[App page](https://appshunter.io/ios/app/know-time-zones/id1626299302)

**Features:** macOS Compatibility

**In-app purchases:** none


### World Time Clock Master

[App page](https://appshunter.io/ios/app/world-time-clock-master/id6448859727)

Effortlessly manage multiple time zones with this app. Convert times instantly, schedule events, and view global clocks at a glance with interactive widgets. Features atomic accuracy and a vast database of locations.

**Highlights:** Multiple time zone display, Interactive time conversion, Event scheduling, Atomic time accuracy, Dynamic home screen widgets, List mode for text view, Real moon phases and sunrise/sunset

**Features:** Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month | $2.99 | per month |
| 3 months | $3.99 | per 3 months |
| 1 year | $11.99 | per year |
| 1 year | $11.99 | per year |
| 1 year | $11.99 | per year |
| 1 year | $19.99 | per year |
| Lifetime | $29.99 | one-time |
| Lifetime | $49.99 | one-time |
| Lifetime | $79.99 | one-time |
| Lifetime | $99.99 | one-time |

**What reviewers like**

- 🚀 Delightful scheduling assistance
- 👍 Feature improvement
- 👍 The best Timezone helper
- 👍 One of the best clocks around
- 👍 The Widget is so damn cool!

**What reviewers complain about**

- 🐛 Problemas al actualizar
- 🐛 Sticky signup interface
- 🐛 Demo not enough
- 🔒 NOT A FREE APP
- 💰 Terrible monetisation model compared to previous app

**Reported bugs**

- Lose all the registered locations after updating the app
- Sticky signup interface
- Widget doesn't work
- GMT and London currently have a 1 hour time difference between the two locations, but the app shows them the same time

**Requested features**

- Add the time difference in hours between the default location and other locations in both the widget and the app
- See my calendar events on the dial
- Make a paid tier that doesn't collect my data
- Add new event to a Calendar


## Frequently asked questions

### Is Know Time Zones free?

Know Time Zones is free to download, with no in-app purchases.

### Is World Time Clock Master free?

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

### Do Know Time Zones or World Time Clock Master have ads?

Neither Know Time Zones nor World Time Clock Master 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.*