# Time Zone Converter Calculator vs ZoneFlow

The clearest difference is ads: Time Zone Converter Calculator at none against ZoneFlow's shown. ZoneFlow's advantage is update cadence (every 3 days vs every 5 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Time Zone Converter Calculator sells 3 in-app purchases, starting at $2.99 per 7 days and ZoneFlow sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Time Zone Converter Calculator ships an update every 5 months, ZoneFlow every 3 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Time Zone Converter Calculator | ZoneFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 days** |
| Size | 3 MB | 19 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) | [Benji Mandel](https://appshunter.io/developer/1520446400) |

## What reviewers say

### Time Zone Converter Calculator

[App page](https://appshunter.io/ios/app/time-zone-converter-calculator/id6772160066)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Meeting Planner Weekly | $2.99 | per 7 days |
| Daylight Saving Yearly | $14.99 | per year |
| UTC Offset Lifetime | $29.99 | one-time |


### ZoneFlow

[App page](https://appshunter.io/ios/app/zoneflow-auto-timezone/id6777122376)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZoneFlow Pro Monthly | $2.99 | per month |
| ZoneFlow Pro Yearly | $14.99 | per year |


## Frequently asked questions

### Is Time Zone Converter Calculator free?

Time Zone Converter Calculator is free to download, with in-app purchases available.

### Is ZoneFlow free?

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

### Do Time Zone Converter Calculator or ZoneFlow have ads?

ZoneFlow shows ads; Time Zone Converter Calculator does not.

### Which is updated more often, Time Zone Converter Calculator or ZoneFlow?

Time Zone Converter Calculator ships an update every 5 months, and ZoneFlow every 3 days. Most recently, Time Zone Converter Calculator was updated on October 28, 2026 and ZoneFlow on October 25, 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.*