# Ops Clock vs World Time Shifter Clock

The clearest difference is ads: Ops Clock at none against World Time Shifter Clock's shown. Ops Clock also leads on rating (4.7 vs 4.4) and monetization model (free vs ad-supported). World Time Shifter Clock's advantage is update cadence (every 3 weeks vs every 5 months) and ratings volume (98 vs 11). On price, review sentiment, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ops Clock holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: World Time Shifter Clock has 98 ratings behind it against 11, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Ops Clock ships an update every 5 months, World Time Shifter Clock every 3 weeks. The most recent releases landed on October 13, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Ops Clock | World Time Shifter Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (11 ratings)](https://appshunter.io/ios/app/ops-clock/id1352786229/reviews)** | [4.4 (98 ratings)](https://appshunter.io/ios/app/world-time-shifter-clock/id1499246199/reviews) |
| Number of ratings | 11 | **98** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 2 MB | 23 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [James Kretchmar](https://appshunter.io/developer/1352786228) | [David Richmond](https://appshunter.io/developer/329944573) |

## What reviewers say

### Ops Clock

[App page](https://appshunter.io/ios/app/ops-clock/id1352786229)

A versatile utility app offering a world clock with over 400 cities, unlimited timers, and three powerful calculators for time zone, time, and date arithmetic. It also features an event log to track real-time occurrences and elapsed times.

**Highlights:** World clock with 400+ cities, Unlimited count-up and countdown timers, Time zone, time, and date calculators, Event log with elapsed time tracking, Customizable labels and notifications

**Features:** Vision Pro support

**In-app purchases:** none


### World Time Shifter Clock

[App page](https://appshunter.io/ios/app/world-time-shifter-clock/id1499246199)

This app helps you manage time across different time zones for global coordination. Easily plan meetings, stay connected with loved ones, and track events worldwide. Its intuitive display and time-shifting feature make it simple to understand and use.

**Highlights:** Intuitive world clock display, Time shifting for time zone comparison, Meeting scheduling across time zones, Travel time forecasting, Event reminders and notifications

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ops Clock free?

Ops Clock is free to download, with no in-app purchases.

### Is World Time Shifter Clock free?

World Time Shifter Clock is free to download, with no in-app purchases.

### Which has better reviews, Ops Clock or World Time Shifter Clock?

Ops Clock is rated higher. Ops Clock averages 4.7 out of 5 from 11 ratings, while World Time Shifter Clock averages 4.4 from 98 ratings.

### Do Ops Clock or World Time Shifter Clock have ads?

World Time Shifter Clock shows ads; Ops Clock does not.

### Which is updated more often, Ops Clock or World Time Shifter Clock?

Ops Clock ships an update every 5 months, and World Time Shifter Clock every 3 weeks. Most recently, Ops Clock was updated on October 13, 2026 and World Time Shifter Clock on October 17, 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.*