# Time Calibrator vs 电波表对时 Time Sync

The clearest difference is price: Time Calibrator at Free against 电波表对时 Time Sync's $0.99. 电波表对时 Time Sync's advantage is review sentiment (77% vs 33%) and rating (5.0 vs 2.7). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Time Calibrator is free to download; 电波表对时 Time Sync costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

电波表对时 Time Sync holds the better App Store score, 5.0 against 2.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 33% of Time Calibrator's written reviews are positive against 77% of 电波表对时 Time Sync's.

Time Calibrator ships an update every 8 months, 电波表对时 Time Sync daily. The most recent releases landed on August 24, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Time Calibrator | 电波表对时 Time Sync |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [2.7 (3 ratings)](https://appshunter.io/ios/app/time-calibrator/id786988278/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/time-sync/id6447857623/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | 33.3% of reviews | **76.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Daily** |
| Monetization | **Free** | Paid |
| Size | 8 MB | 25 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Atomtime Suisse S.A.](https://appshunter.io/developer/786988281) | [大连森林互动科技有限公司](https://appshunter.io/developer/1602532041) |

## 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


### 电波表对时 Time Sync

[App page](https://appshunter.io/ios/app/time-sync/id6447857623)

This utility app simulates six major radio wave clock signals to synchronize atomic watches. It features a "MAX" gain mode for faster synchronization and a realistic interface inspired by radio oscilloscopes. The app is ad-free and offers a pure, user-focused experience for all atomic watch owners.

**Highlights:** Simulates six global radio wave signals, MAX gain signal mode for fast syncing, Supports all atomic watches and clocks, Realistic radio oscilloscope interface, Ad-free and no in-app purchases

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

**In-app purchases:** none


## Frequently asked questions

### Is Time Calibrator free?

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

### Is 电波表对时 Time Sync free?

电波表对时 Time Sync costs $0.99, with no in-app purchases.

### Which has better reviews, Time Calibrator or 电波表对时 Time Sync?

电波表对时 Time Sync is rated higher. Time Calibrator averages 2.7 out of 5 from 3 ratings, while 电波表对时 Time Sync averages 5.0 from 2 ratings.

### Do Time Calibrator or 电波表对时 Time Sync have ads?

Neither Time Calibrator nor 电波表对时 Time Sync shows ads.

### Which is updated more often, Time Calibrator or 电波表对时 Time Sync?

Time Calibrator ships an update every 8 months, and 电波表对时 Time Sync daily. Most recently, Time Calibrator was updated on August 24, 2026 and 电波表对时 Time Sync on September 26, 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.*