# Time Calibrator vs SelfSyncTime

The clearest difference is iOS requirement: SelfSyncTime at 13.0 against Time Calibrator's 15.6. 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.

## The numbers

| Metric | Time Calibrator | SelfSyncTime |
| --- | --- | --- |
| 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 | — |
| Monetization | Free | — |
| Size | 8 MB | 1 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Atomtime Suisse S.A.](https://appshunter.io/developer/786988281) | [Self Electronics Co.,Ltd](https://appshunter.io/developer/948190118) |

## 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


### SelfSyncTime

[App page](https://appshunter.io/ios/app/selfsynctime/id6463841964)

**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 SelfSyncTime free?

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

### Do Time Calibrator or SelfSyncTime have ads?

Neither Time Calibrator nor SelfSyncTime shows ads.

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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.*