# World Clock Pro vs alertTO

The clearest difference is device support: World Clock Pro at 2 against alertTO's —. World Clock Pro also leads on iOS requirement (13.0 vs 18.0). On price and in-app purchases there is nothing between them.

Both are free to download. World Clock Pro sells 5 in-app purchases, starting at $1.99 per month and alertTO sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | World Clock Pro | alertTO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.4K ratings)](https://appshunter.io/ios/app/world-clock-pro-convert-time/id969635117/reviews)** | — |
| Number of ratings | **1.4K** | — |
| Positive reviews | 76.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Every 2 months | — |
| Monetization | Subscription | — |
| Size | 41 MB | 37 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [Alex Komarov Inc.](https://appshunter.io/developer/364741805) | [Toby moktar](https://appshunter.io/developer/1531576098) |

## What reviewers say

### World Clock Pro

[App page](https://appshunter.io/ios/app/world-clock-pro-convert-time/id969635117)

Easily track and convert time across multiple global time zones. Schedule events, share accurate times instantly, and access a vast database of cities and time zones. Ideal for international communication and planning.

**Highlights:** Universal clock access, Effortless time conversion, Schedule calendar events, Instant time sharing, Large city and timezone database, Automatic timezone updates

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month | $1.99 | per month |
| 1 month | $2.99 | per month |
| 1 year | $9.99 | per year |
| 1 year | $11.99 | per year |
| 1 year | $19.99 | per year |

**What reviewers like**

- 🚀 Elegant and intuitive interface
- 🔍 Excellent visualization of multiple time zones
- ⏱ Seamless time shifting
- 🌍 Convenient for international teams and travelers
- 📆 Helpful for scheduling across time zones

**What reviewers complain about**

- 🐛 Widget issues and lack of functionality
- 🖥 Lack of iPad and landscape mode support
- 🔧 Concerns about app updates and feature removals
- 💰 Complaints about subscription model and pricing

**Reported bugs**

- Widget not working on iOS 14 and newer
- Issues with local time zone detection and display
- Inconsistent behavior after app updates

**Requested features**

- Add date function for future time zone changes
- Ability to customize and sort displayed time zones
- Implement an Apple Watch app
- Improve widget functionality and customization


### alertTO

[App page](https://appshunter.io/ios/app/alertto/id6478510778)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| alertTO+ | $0.99 | per month |


## Frequently asked questions

### Is World Clock Pro free?

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

### Is alertTO free?

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

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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.*