# Countdown vs World Time Calc

The clearest difference is price: World Time Calc at Free against Countdown's $4.99. Countdown's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, device support and iOS requirement there is nothing between them.

World Time Calc is free to download; Countdown costs $4.99 up front. World Time Calc sells 1 one-off in-app purchase. Countdown asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Countdown against 5.0 for World Time Calc. That said, the two scores are not equally well evidenced: Countdown has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 92% of Countdown's written reviews are positive against 67% of World Time Calc's.

Countdown ships an update fortnightly, World Time Calc every 6 weeks. The most recent releases landed on October 25, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Countdown | World Time Calc |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/countdown-dayplus/id6463768562/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/world-time-calc-time-converter/id6472414655/reviews) |
| Number of ratings | **7** | 1 |
| Positive reviews | **92.3% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Paid | **Ad-supported** |
| Size | 44 MB | 10 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Manjun Tech](https://appshunter.io/developer/1675637283) | [Hajime Suzuki](https://appshunter.io/developer/1615906018) |

## What reviewers say

### Countdown

[App page](https://appshunter.io/ios/app/countdown-dayplus/id6463768562)

Easily track important upcoming events with customizable countdowns. Set reminders, sync with your calendar, and share progress with friends and family. Organize your life and never miss a moment.

**Highlights:** Customizable countdowns, Event reminders, Calendar event sync, Home and lock screen widgets, Share countdowns, Light and dark mode

**Features:** Vision Pro support

**In-app purchases:** none


### World Time Calc

[App page](https://appshunter.io/ios/app/world-time-calc-time-converter/id6472414655)

Visualize day/night cycles and working hours across different cities with an interactive timeline. Receive custom notifications for sunrise and sunset. Manually adjust work hours for precise scheduling.

**Highlights:** Day/night and working hour graphs, Automatic time updates, Manual work hour adjustment, Interactive time cursor, Sunrise/sunset alarm notifications

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PremiumPlan | $7.99 | one-time |


## Frequently asked questions

### Is Countdown free?

Countdown costs $4.99, with no in-app purchases.

### Is World Time Calc free?

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

### Which has better reviews, Countdown or World Time Calc?

Countdown and World Time Calc are both rated 5.0 out of 5 on the App Store, from 7 and 1 ratings respectively.

### Do Countdown or World Time Calc have ads?

World Time Calc shows ads; Countdown does not.

### Which is updated more often, Countdown or World Time Calc?

Countdown ships an update fortnightly, and World Time Calc every 6 weeks. Most recently, Countdown was updated on October 25, 2026 and World Time Calc on October 23, 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.*