# Astrolabe Clock vs Sky Time

The clearest difference is rating: Astrolabe Clock at 4.7 against Sky Time's 4.2. Astrolabe Clock also leads on review sentiment (91% vs 60%). Sky Time's advantage is iOS requirement (10.0 vs 15.6). On price, ratings volume, update cadence and ads there is nothing between them.

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

Astrolabe Clock holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 48 and 17 respectively. Written reviews point the same way: 91% of Astrolabe Clock's written reviews are positive against 60% of Sky Time's.

Astrolabe Clock ships an update every 4 weeks, Sky Time every 2 months. The most recent releases landed on September 15, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Astrolabe Clock | Sky Time |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (48 ratings)](https://appshunter.io/ios/app/astrolabe-clock/id421777015/reviews)** | [4.2 (17 ratings)](https://appshunter.io/ios/app/sky-time/id473539346/reviews) |
| Number of ratings | **48** | 17 |
| Positive reviews | **90.9% of reviews** | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 3 MB | 1 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Smith](https://appshunter.io/developer/415384088) | [John Kennedy](https://appshunter.io/developer/284943103) |

## What reviewers say

### Astrolabe Clock

[App page](https://appshunter.io/ios/app/astrolabe-clock/id421777015)

This app offers a modern interpretation of an ancient astronomical instrument, providing a real-time view of the sky. It displays the time of day, day of the year, and the positions of celestial bodies like the Sun, Moon, planets, and stars. Users can also track sunrise/sunset times, moon phases, and celestial transits.

**Highlights:** Real-time sky view, Time of day and day of year display, Sun, Moon, planet, and star locations, Sunrise and sunset times, Moon phase tracking, Celestial transit times, Eclipse occurrence indicator

**Features:** macOS Compatibility

**In-app purchases:** none


### Sky Time

[App page](https://appshunter.io/ios/app/sky-time/id473539346)

This app provides essential astronomy-related time data, including Julian Date, Universal Time, and Sidereal Time calculated using your device's location. It features a night-vision friendly red display and pop-up descriptions for easy understanding.

**Highlights:** Displays local, Julian, Local Sidereal, and Universal Time, Calculates Sidereal Time using device location, Night-vision friendly red display, Pop-up descriptions for time data

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Astrolabe Clock free?

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

### Is Sky Time free?

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

### Which has better reviews, Astrolabe Clock or Sky Time?

Astrolabe Clock is rated higher. Astrolabe Clock averages 4.7 out of 5 from 48 ratings, while Sky Time averages 4.2 from 17 ratings.

### Do Astrolabe Clock or Sky Time have ads?

Neither Astrolabe Clock nor Sky Time shows ads.

### Which is updated more often, Astrolabe Clock or Sky Time?

Astrolabe Clock ships an update every 4 weeks, and Sky Time every 2 months. Most recently, Astrolabe Clock was updated on September 15, 2026 and Sky Time on September 21, 2026.

---

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