# HKAStro vs EMM EDB

HKAStro and EMM EDB both sit at 5.0 stars, but that hides the real split: 100% of HKAStro's written reviews are positive against 27% of EMM EDB's. HKAStro also leads on iOS requirement (13.0 vs 15.0). On price, rating, ratings volume and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for HKAStro against 5.0 for EMM EDB. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews are what separate them: 100% of HKAStro's written reviews are positive against 27% of EMM EDB's.

HKAStro ships an update every 10 months, EMM EDB every 5 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | HKAStro | EMM EDB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/hkastro/id526273487/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/emm-edb/id563107065/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **100.0% of reviews** | 27.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 months** |
| Monetization | Free | Free |
| Size | 120 MB | 163 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong Astronomical Society](https://appshunter.io/developer/526273530) | [香港教育電視](https://appshunter.io/developer/563107068) |

## 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


### EMM EDB

[App page](https://appshunter.io/ios/app/emm-edb/id563107065)

This app offers a rich collection of educational multimedia resources, including videos, animations, and picture books, designed to support learning for kindergarten, primary, and secondary students and teachers. Resources are aligned with the school curriculum and aim to enrich the learning experience and facilitate teaching activities.

**Highlights:** Theme-based short videos, Multi-ending micro movies, Animations and nursery rhymes, Picture books and sound tracks, Curriculum-aligned resources, Informational videos for parents and teachers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HKAStro free?

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

### Is EMM EDB free?

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

### Which has better reviews, HKAStro or EMM EDB?

HKAStro and EMM EDB are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do HKAStro or EMM EDB have ads?

Neither HKAStro nor EMM EDB shows ads.

### Which is updated more often, HKAStro or EMM EDB?

HKAStro ships an update every 10 months, and EMM EDB every 5 months. Most recently, HKAStro was updated on November 1, 2026 and EMM EDB on November 1, 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.*