HKAStro vs SynAlign
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HKAStro
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.
- Local astronomical news
- Event information
- Weather forecasts
- Polar Scope tool
- Moon Phase tracker
- Flashlight feature
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This mobile app is provided by the Hong Kong Astronomical Society, aims to provide users with the latest local astronomical news, activities, weather forecast information, and provides useful features such as Polar Scope, Moon Phase, Flashlight, etc.
SynAlign
This application assists users in polar aligning their Star Adventurer equatorial mount. It automatically determines your location to calculate the real-time star scene, guiding you to Polaris with on-screen arrows and indicating its position within the polar scope's view for precise alignment.
- Automatic location acquisition
- Real-time star scene calculation
- On-screen Polaris guidance
- Polar scope view indicator
- Precise polar alignment
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SynAlign是为配合星达（Sky-Watcher）Star Adventurer星野赤道仪开发的对极轴应用。应用可自动获取用户的地理位置（也可人工设定），以此计算出实时的星空场景。即便不认识星空的用户也可以根据星图界面中的红色箭头提示找到北极星在天上的位置。软件还将给出北极星在极轴望远镜视野中的位置来引导用户精确对极轴。
Screenshots
Verdict
The clearest difference is review sentiment: HKAStro at 100% against SynAlign's 50%. HKAStro also leads on rating (5.0 vs 4.0). SynAlign's advantage is iOS requirement (6.1 vs 13.0). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
HKAStro holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 100% of HKAStro's written reviews are positive against 50% of SynAlign's.
| Parameter | HKAStro | SynAlign |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.0 (2 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 10 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 6.1 — better |
| Further details — not scored | ||
| Size | 120 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Hong Kong Astronomical Society | Shenzhen Youhua Technology Company Limited |
Customer experience
HKAStro
SynAlign
In-app purchases
HKAStro
No in-app purchases
SynAlign
No in-app purchases
