# World Clock for iPhone vs FFPAI

The clearest difference is in-app purchases: FFPAI at none against World Clock for iPhone's 2. FFPAI also leads on update cadence (every 3 days vs every 3 weeks). World Clock for iPhone's advantage is iOS requirement (8.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. World Clock for iPhone sells 2 one-off in-app purchases. FFPAI asks for nothing beyond the download.

World Clock for iPhone ships an update every 3 weeks, FFPAI every 3 days. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | World Clock for iPhone | FFPAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (6 ratings)](https://appshunter.io/ios/app/world-clock-for-iphone/id409612681/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 78.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 28 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [阅 陈](https://appshunter.io/developer/365312376) | [ENLACECODE TECHNOLOGY PRIVATE LIMITED](https://appshunter.io/developer/1520158438) |

## What reviewers say

### World Clock for iPhone

[App page](https://appshunter.io/ios/app/world-clock-for-iphone/id409612681)

Easily track time across multiple time zones without manual calculations. Set alarms for specific times in different locations to manage international meetings and schedules efficiently.

**Highlights:** Multiple time zone display, Set alarms for different clocks, Automatic time difference calculation, International meeting scheduling, Client time zone tracking

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to unlimit number of clocks | $0.99 | one-time |
| Upgrade to remove Ads | $2.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🌍 Useful for tracking time in different time zones
- 🕰️ Accurate clock display
- 💡 Unique clock design

**What reviewers complain about**

- 🐛 Alarms not working
- 🐛 Crashes and freezes
- 🐛 Inability to add/remove cities
- 🕰️ Slow performance

**Reported bugs**

- Alarms not triggering
- Cities not loading
- Time display issues

**Requested features**

- 24-hour time format option
- Ability to set alarms
- More city/country options
- Compatibility with newer iOS versions


### FFPAI

[App page](https://appshunter.io/ios/app/ffpai/id6790324946)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is World Clock for iPhone free?

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

### Is FFPAI free?

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

### Do World Clock for iPhone or FFPAI have ads?

Neither World Clock for iPhone nor FFPAI shows ads.

### Which is updated more often, World Clock for iPhone or FFPAI?

World Clock for iPhone ships an update every 3 weeks, and FFPAI every 3 days. Most recently, World Clock for iPhone was updated on October 13, 2026 and FFPAI on October 1, 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.*