# Contact Groups vs World Time Clock Master

The clearest difference is price: World Time Clock Master at Free against Contact Groups's $0.99. World Time Clock Master also leads on rating (4.6 vs 3.5) and review sentiment (66% vs 40%). Contact Groups's advantage is in-app purchases (none vs 13) and iOS requirement (12.0 vs 17.0). On update cadence, ads and device support there is nothing between them.

World Time Clock Master is free to download; Contact Groups costs $0.99 up front. World Time Clock Master sells 10 in-app purchases, starting at $2.99 per month. Contact Groups asks for nothing beyond the download.

World Time Clock Master holds the better App Store score, 4.6 against 3.5. That said, the two scores are not equally well evidenced: World Time Clock Master has 816 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 40% of Contact Groups's written reviews are positive against 66% of World Time Clock Master's.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 1, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Contact Groups | World Time Clock Master |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/contact-groups/id1508450444/reviews) | **[4.6 (816 ratings)](https://appshunter.io/ios/app/world-time-clock-master/id6448859727/reviews)** |
| Number of ratings | 2 | **816** |
| Positive reviews | 40.0% of reviews | **65.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | **Paid** | Subscription |
| Size | 1 MB | 236 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Godfrey Raftesath](https://appshunter.io/developer/434548051) | [Alex Komarov Inc.](https://appshunter.io/developer/364741805) |

## What reviewers say

### Contact Groups

[App page](https://appshunter.io/ios/app/contact-groups/id1508450444)

Easily create and manage contact groups directly on your device. Organize frequently contacted people for quick access, send group emails, or text multiple recipients at once. Export contacts as VCards for backup or sharing.

**Highlights:** Create and manage contact groups, Directly edit Apple Contacts database, Send group emails, Send group SMS/text messages, Export contacts as VCard, Delete multiple contacts

**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 Contact Groups free?

Contact Groups costs $0.99, with no in-app purchases.

### Is World Time Clock Master free?

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

### Which has better reviews, Contact Groups or World Time Clock Master?

World Time Clock Master is rated higher. Contact Groups averages 3.5 out of 5 from 2 ratings, while World Time Clock Master averages 4.6 from 816 ratings.

### Do Contact Groups or World Time Clock Master have ads?

Neither Contact Groups nor World Time Clock Master shows ads.

### Which is updated more often, Contact Groups or World Time Clock Master?

Contact Groups ships an update fortnightly, and World Time Clock Master fortnightly. Most recently, Contact Groups was updated on October 1, 2026 and World Time Clock Master on October 12, 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.*