# HKAStro vs Celestial Simulation

The clearest difference is price: HKAStro at Free against Celestial Simulation's $3.99. HKAStro also leads on iOS requirement (13.0 vs 18.5). On ads, in-app purchases and device support there is nothing between them.

HKAStro is free to download; Celestial Simulation costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | HKAStro | Celestial Simulation |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hkastro/id526273487/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Monetization | Free | — |
| Size | 120 MB | 88 MB |
| Requires iOS | **13.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong Astronomical Society](https://appshunter.io/developer/526273530) | [Dung Le](https://appshunter.io/developer/1850828414) |

## What reviewers say

### HKAStro

[App page](https://appshunter.io/ios/app/hkastro/id526273487)

This educational app delivers local astronomical news, event updates, and weather forecasts. It includes helpful tools like a polar scope and moon phase tracker for stargazing enthusiasts.

**Highlights:** Local astronomical news, Event information, Weather forecasts, Polar Scope tool, Moon Phase tracker, Flashlight feature

**Features:** macOS Compatibility

**In-app purchases:** none


### Celestial Simulation

[App page](https://appshunter.io/ios/app/celestial-simulation/id6756852871)

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

**In-app purchases:** none


## Frequently asked questions

### Is HKAStro free?

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

### Is Celestial Simulation free?

Celestial Simulation costs $3.99, with no in-app purchases.

### Do HKAStro or Celestial Simulation have ads?

Neither HKAStro nor Celestial Simulation 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.*