Time Calibrator vs GTGallery
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Time Calibrator
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.
- Accurate global time and date
- Connects to Swiss atomic clock server
- Quantum technology data transmission
- Direct communication to i-Atomic watches
- Light signal synchronization
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This app is designed for i-Atomic watches users Welcome to Time Calibrator! Time Calibrator has been specifically designed to deliver accurate time information to people all around the globe. The app connects automatically to the atomic clock server in Switzerland to display the exact local time and date. Through quantum technology, the information travels at the speed of light from the NTP server and is communicated directly to AtomTime i-Atomic watches via light signals.
GTGallery
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GTGallery has been officially released, mainly for use in conjunction with our company's smart photo frames. It is used to upload local images to the smart photo frame for display, and facilitates users to operate the brightness, contrast, color temperature, screen off time, and firmware upgrade of the photo frame.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Time Calibrator | GTGallery |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (3 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 8 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 8 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Atomtime Suisse S.A. | 红林 黄 |
In-app purchases
Time Calibrator
No in-app purchases
GTGallery
No in-app purchases
