# Desktop Astro Clock vs Bio3G Clock

The clearest difference is update cadence: Bio3G Clock at monthly against Desktop Astro Clock's every 9 months. Bio3G Clock also leads on iOS requirement (13.0 vs 17.0). 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.

Desktop Astro Clock ships an update every 9 months, Bio3G Clock monthly. The most recent releases landed on September 19, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Desktop Astro Clock | Bio3G Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/desktop-astro-clock/id1588806370/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | Free | — |
| Size | 416 MB | 85 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BEHR Consulting International](https://appshunter.io/developer/385816833) | [Biometrics 3g (PTY) LTD](https://appshunter.io/developer/1843550149) |

## What reviewers say

### Desktop Astro Clock

[App page](https://appshunter.io/ios/app/desktop-astro-clock/id1588806370)

This utility app displays time in various formats, including Julian, Sidereal, and GMT. It offers always-on display options, moon and meteor shower information, and customizable clock configurations. Widgets and a watchOS app are also supported for enhanced functionality.

**Highlights:** Multiple time formats (Julian, Sidereal, GMT), Always-on display with battery threshold, Moon phase and meteor shower information, Customizable display configurations, Widget support, WatchOS app with specialized displays

**Features:** macOS Compatibility

**In-app purchases:** none


### Bio3G Clock

[App page](https://appshunter.io/ios/app/bio3g-clock/id6447108239)

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

**In-app purchases:** none


## Frequently asked questions

### Is Desktop Astro Clock free?

Desktop Astro Clock is free to download, with no in-app purchases.

### Is Bio3G Clock free?

Bio3G Clock is free to download, with no in-app purchases.

### Do Desktop Astro Clock or Bio3G Clock have ads?

Neither Desktop Astro Clock nor Bio3G Clock shows ads.

### Which is updated more often, Desktop Astro Clock or Bio3G Clock?

Desktop Astro Clock ships an update every 9 months, and Bio3G Clock monthly. Most recently, Desktop Astro Clock was updated on September 19, 2026 and Bio3G Clock on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*