# Quick Quake vs World Time Shifter Clock

The clearest difference is price: Quick Quake at Free against World Time Shifter Clock's $3.99. Quick Quake also leads on iOS requirement (9.0 vs 18.0). World Time Shifter Clock's advantage is rating (4.7 vs 4.0) and update cadence (every 3 weeks vs every 6 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Quick Quake is free to download; World Time Shifter Clock costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

World Time Shifter Clock holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: World Time Shifter Clock has 153 ratings behind it against 2, so its average is the more settled of the two.

Quick Quake ships an update every 6 months, World Time Shifter Clock every 3 weeks. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Quick Quake | World Time Shifter Clock |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/quick-quake/id743534887/reviews) | **[4.7 (153 ratings)](https://appshunter.io/ios/app/world-time-shifter-clock-pro/id866437742/reviews)** |
| Number of ratings | 2 | **153** |
| Positive reviews | — | 94.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 9 MB | 19 MB |
| Requires iOS | **9.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ESS Earth Sciences](https://appshunter.io/developer/1424839112) | [David Richmond](https://appshunter.io/developer/329944573) |

## What reviewers say

### Quick Quake

[App page](https://appshunter.io/ios/app/quick-quake/id743534887)

This tool allows for rapid earthquake location and magnitude verification. It serves as an educational resource, demonstrating how seismic waves determine earthquake epicenters. Users can quickly analyze data to refine automatic event notifications.

**Highlights:** Rapid earthquake location, Magnitude verification, P and S wave analysis, Demo data for education, Seismic observatory data integration, Adjustable travel velocities and depth

**Features:** macOS Compatibility

**In-app purchases:** none


### World Time Shifter Clock

[App page](https://appshunter.io/ios/app/world-time-shifter-clock-pro/id866437742)

This intuitive world clock helps you coordinate with people across different time zones. Easily plan meetings, stay connected with loved ones, and manage global teams. It offers a unique visual display and time shifting capabilities for effortless time management.

**Highlights:** Unique intuitive display, Time shifting for time changes, Meeting scheduling, Global team management, Travel time forecasting, Event reminders and notifications

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✨ Stunning visuals
- 👍 Intuitive and attractive interface
- 🌍 Excellent for international time visualization
- 🚀 Efficient and readable world clock
- 💡 Unique forecasting ability

**What reviewers complain about**

- ❓ Missing specific cities (e.g., Beijing)
- 🐛 Minor typo in welcome screen
- 🤔 Lack of UTC timezone initially (resolved by GMT)

**Reported bugs**

- Welcome screen typo: "by add" instead of "by adding"
- Beijing, China not visible in city list

**Requested features**

- Bigger rim font option
- Native Mac app
- Ability to set up profiles for different projects
- Custom locations
- Time synchronization


## Frequently asked questions

### Is Quick Quake free?

Quick Quake is free to download, with no in-app purchases.

### Is World Time Shifter Clock free?

World Time Shifter Clock costs $3.99, with no in-app purchases.

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

World Time Shifter Clock is rated higher. Quick Quake averages 4.0 out of 5 from 2 ratings, while World Time Shifter Clock averages 4.7 from 153 ratings.

### Do Quick Quake or World Time Shifter Clock have ads?

Neither Quick Quake nor World Time Shifter Clock shows ads.

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

Quick Quake ships an update every 6 months, and World Time Shifter Clock every 3 weeks. Most recently, Quick Quake was updated on October 4, 2026 and World Time Shifter Clock on October 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*