# Time Calibrator vs GTGallery

The clearest difference is update cadence: GTGallery at fortnightly against Time Calibrator's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Time Calibrator ships an update every 8 months, GTGallery fortnightly. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Time Calibrator | GTGallery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/time-calibrator/id786988278/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 8 MB | 54 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Atomtime Suisse S.A.](https://appshunter.io/developer/786988281) | [红林 黄](https://appshunter.io/developer/1421611194) |

## What reviewers say

### Time Calibrator

[App page](https://appshunter.io/ios/app/time-calibrator/id786988278)

This utility app provides precise local time and date information by connecting to an atomic clock server in Switzerland. It utilizes quantum technology to transmit this data at the speed of light directly to compatible i-Atomic watches.

**Highlights:** Accurate global time and date, Connects to Swiss atomic clock server, Quantum technology data transmission, Direct communication to i-Atomic watches, Light signal synchronization

**Features:** macOS Compatibility

**In-app purchases:** none


### GTGallery

[App page](https://appshunter.io/ios/app/gtgallery/id6741751157)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Time Calibrator free?

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

### Is GTGallery free?

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

### Do Time Calibrator or GTGallery have ads?

Neither Time Calibrator nor GTGallery shows ads.

### Which is updated more often, Time Calibrator or GTGallery?

Time Calibrator ships an update every 8 months, and GTGallery fortnightly. Most recently, Time Calibrator was updated on October 29, 2026 and GTGallery on October 28, 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.*