# QYScience vs StellarVana

The clearest difference is rating: StellarVana at 5.0 against QYScience's 4.5. QYScience's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 26.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. StellarVana sells 2 in-app purchases, starting at $4.99 per month. QYScience asks for nothing beyond the download.

StellarVana holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

QYScience ships an update every 11 days, StellarVana every 3 weeks. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | QYScience | StellarVana |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/qyscience/id1526236130/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/stellarvana-star-map/id6808117808/reviews)** |
| Number of ratings | 2 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 292 MB | 13 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [广东群宇互动科技有限公司](https://appshunter.io/developer/1019985641) | [Gary Saggu](https://appshunter.io/developer/465733546) |

## What reviewers say

### QYScience

[App page](https://appshunter.io/ios/app/qyscience/id1526236130)

This educational app offers a fun and interactive way to learn science concepts through custom control and graphical programming. Explore lighting and motor systems with engaging gameplay.

**Highlights:** Custom control of lighting systems, Custom control of motor systems, Graphical programming gameplay, Interactive science learning, Engaging educational experience

**Features:** Vision Pro support

**In-app purchases:** none


### StellarVana

[App page](https://appshunter.io/ios/app/stellarvana-star-map/id6808117808)

Explore the night sky with a dynamic celestial map. Identify stars, planets, and constellations in real-time. Plan observations and learn about astronomical events like eclipses.

**Highlights:** Live sky map identification, Constellation and object search, Eclipse countdowns and visibility, Tonight's observation planner, Educational astronomy topics, Night-vision red mode

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StellarVana Premium monthly | $4.99 | per month |
| StellarVana Premium Annual | $39.99 | per year |


## Frequently asked questions

### Is QYScience free?

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

### Is StellarVana free?

StellarVana is free to download, with in-app purchases available.

### Which has better reviews, QYScience or StellarVana?

StellarVana is rated higher. QYScience averages 4.5 out of 5 from 2 ratings, while StellarVana averages 5.0 from 4 ratings.

### Do QYScience or StellarVana have ads?

Neither QYScience nor StellarVana shows ads.

### Which is updated more often, QYScience or StellarVana?

QYScience ships an update every 11 days, and StellarVana every 3 weeks. Most recently, QYScience was updated on October 2, 2026 and StellarVana on October 10, 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.*