# ZoneTime vs whatwatt

The clearest difference is update cadence: whatwatt at every 2 weeks against ZoneTime's every 3 months. ZoneTime's advantage is iOS requirement (8.0 vs 17.0). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for ZoneTime against 5.0 for whatwatt. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

ZoneTime ships an update every 3 months, whatwatt every 2 weeks. The most recent releases landed on September 9, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | ZoneTime | whatwatt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/zonetime/id852849552/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/whatwatt/id6740263482/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 26 MB | 53 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Glen Tregoning](https://appshunter.io/developer/852849555) | [whatwatt AG](https://appshunter.io/developer/1789292734) |

## What reviewers say

### ZoneTime

[App page](https://appshunter.io/ios/app/zonetime/id852849552)

Easily compare timezones to schedule meetings and avoid calling people at inconvenient hours. The app features a widget for quick glances and a table to compare up to 20 locations, automatically adjusting for Daylight Saving Time.

**Highlights:** View overlapping timezone hours, Schedule meetings across timezones, Today Widget for quick time checks, Compare up to 20 locations, Color-coded 'OK to call' times, Automatic Daylight Saving Time adjustment, Create calendar events across timezones

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

**In-app purchases:** none


### whatwatt

[App page](https://appshunter.io/ios/app/whatwatt/id6740263482)

This utility app is preparing for future enhancements. Developers are working on new functionalities that will be revealed soon.

**Highlights:** Future feature groundwork, Upcoming enhancements, Developer updates

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

**In-app purchases:** none


## Frequently asked questions

### Is ZoneTime free?

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

### Is whatwatt free?

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

### Which has better reviews, ZoneTime or whatwatt?

ZoneTime and whatwatt are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do ZoneTime or whatwatt have ads?

Neither ZoneTime nor whatwatt shows ads.

### Which is updated more often, ZoneTime or whatwatt?

ZoneTime ships an update every 3 months, and whatwatt every 2 weeks. Most recently, ZoneTime was updated on September 9, 2026 and whatwatt on September 16, 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.*