# World Time Clock Master vs Time Calculator Tools

The clearest difference is in-app purchases: Time Calculator Tools at none against World Time Clock Master's 13. Time Calculator Tools also leads on review sentiment (100% vs 66%) and rating (5.0 vs 4.6). World Time Clock Master's advantage is ads (none vs shown) and update cadence (fortnightly vs every 5 months). On price 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. Time Calculator Tools asks for nothing beyond the download.

Time Calculator Tools holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: World Time Clock Master has 816 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 66% of World Time Clock Master's written reviews are positive against 100% of Time Calculator Tools's.

World Time Clock Master ships an update fortnightly, Time Calculator Tools every 5 months. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | World Time Clock Master | Time Calculator Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (816 ratings)](https://appshunter.io/ios/app/world-time-clock-master/id6448859727/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/time-calculator-tools/id6449715720/reviews)** |
| Number of ratings | **816** | 7 |
| Positive reviews | 65.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | Subscription | **Ad-supported** |
| Size | 236 MB | 34 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad, Vision Pro | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alex Komarov Inc.](https://appshunter.io/developer/364741805) | [Evan Winograd](https://appshunter.io/developer/1072241944) |

## What reviewers say

### 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


### Time Calculator Tools

[App page](https://appshunter.io/ios/app/time-calculator-tools/id6449715720)

This app offers a suite of tools for date and time calculations. It can determine the duration between dates, calculate time differences across zones, and estimate time until specific events. It also helps find the midpoint between two dates.

**Highlights:** Calculate total hours and minutes worked, Check time in different time zones, Calculate days until a specific event, Determine weeks between two dates, Find the midpoint of a date range

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is World Time Clock Master free?

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

### Is Time Calculator Tools free?

Time Calculator Tools is free to download, with no in-app purchases.

### Which has better reviews, World Time Clock Master or Time Calculator Tools?

Time Calculator Tools is rated higher. World Time Clock Master averages 4.6 out of 5 from 816 ratings, while Time Calculator Tools averages 5.0 from 7 ratings.

### Do World Time Clock Master or Time Calculator Tools have ads?

Time Calculator Tools shows ads; World Time Clock Master does not.

### Which is updated more often, World Time Clock Master or Time Calculator Tools?

World Time Clock Master ships an update fortnightly, and Time Calculator Tools every 5 months. Most recently, World Time Clock Master was updated on October 17, 2026 and Time Calculator Tools on October 8, 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.*