# HKAStro vs TT Comm Parent

The clearest difference is update cadence: TT Comm Parent at every 10 days against HKAStro's every 10 months. 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.

HKAStro ships an update every 10 months, TT Comm Parent every 10 days. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | HKAStro | TT Comm Parent |
| --- | --- | --- |
| Price | Free | Free |
| 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 | **Every 10 days** |
| Monetization | Free | — |
| Size | 120 MB | 44 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong Astronomical Society](https://appshunter.io/developer/526273530) | [Tutor Time](https://appshunter.io/developer/1842748897) |

## 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


### TT Comm Parent

[App page](https://appshunter.io/ios/app/tt-comm-parent/id6753154038)

**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 TT Comm Parent free?

TT Comm Parent is free to download, with no in-app purchases.

### Do HKAStro or TT Comm Parent have ads?

Neither HKAStro nor TT Comm Parent shows ads.

### Which is updated more often, HKAStro or TT Comm Parent?

HKAStro ships an update every 10 months, and TT Comm Parent every 10 days. Most recently, HKAStro was updated on October 23, 2026 and TT Comm Parent on October 25, 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.*