# Flag Time vs ZoneSync Pro

The clearest difference is in-app purchases: ZoneSync Pro at none against Flag Time's 3. ZoneSync Pro also leads on update cadence (every 3 weeks vs every 10 months) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Flag Time sells 3 in-app purchases, starting at $0.99 per 7 days. ZoneSync Pro asks for nothing beyond the download.

Flag Time ships an update every 10 months, ZoneSync Pro every 3 weeks. The most recent releases landed on September 25, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Flag Time | ZoneSync Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/flag-time-world-clock/id1332312092/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 9 MB | 45 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ottorino Bruni](https://appshunter.io/developer/360574946) | [INVOLUTION CONSULTING PTY LTD](https://appshunter.io/developer/1546377205) |

## What reviewers say

### Flag Time

[App page](https://appshunter.io/ios/app/flag-time-world-clock/id1332312092)

This app provides a minimalist time zone widget featuring flags to help you quickly see the local time in various international locations. It's ideal for staying connected with colleagues, friends, and family across different time zones, offering customization and daylight saving time information.

**Highlights:** Manage multiple countries and flags, 20,000 cities worldwide, Customize city names, Daylight Saving Time info, Share time zones, 24h or 12h clock format

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $0.99 | per 7 days |
| 1 Year | $7.99 | per year |
| Forever | $14.99 | one-time |


### ZoneSync Pro

[App page](https://appshunter.io/ios/app/zonesync-pro/id6747392976)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flag Time free?

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

### Is ZoneSync Pro free?

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

### Do Flag Time or ZoneSync Pro have ads?

Neither Flag Time nor ZoneSync Pro shows ads.

### Which is updated more often, Flag Time or ZoneSync Pro?

Flag Time ships an update every 10 months, and ZoneSync Pro every 3 weeks. Most recently, Flag Time was updated on September 25, 2026 and ZoneSync Pro on October 12, 2026.

---

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