# Physics Galaxy vs SciAstra

The clearest difference is rating: Physics Galaxy at 5.0 against SciAstra's 3.5. Physics Galaxy also leads on update cadence (every 2 months vs every 9 months). SciAstra's advantage is monetization model (free vs free with in-app purchases) and review sentiment (80% vs 67%). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Physics Galaxy holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews complicate that: 67% of Physics Galaxy's written reviews are positive against 80% of SciAstra's, so the app with the better star average is not the one people write more warmly about.

Physics Galaxy ships an update every 2 months, SciAstra every 9 months. The most recent releases landed on June 5, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | Physics Galaxy | SciAstra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/physics-galaxy/id1305855812/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/sciastra/id6469692732/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 66.7% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 277 MB | 327 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Physics Galaxy](https://appshunter.io/developer/1128811596) | [Vivek Dwivedi](https://appshunter.io/developer/1712462392) |

## What reviewers say

### Physics Galaxy

[App page](https://appshunter.io/ios/app/physics-galaxy/id1305855812)

This app provides high-quality physics content for high school students, designed to build expertise for competitive exams. It covers topics needed for entrance tests like IIT-JEE, BITSAT, and AIPMT, as well as Olympiads and NTSE.

**Highlights:** Refined academic physics content, High school level curriculum, Competitive exam preparation, IIT-JEE, BITSAT, AIPMT, AIIMS focus, Olympiad and NTSE coverage

**In-app purchases:** none


### SciAstra

[App page](https://appshunter.io/ios/app/sciastra/id6469692732)

This platform guides students aspiring to careers in science and research. It fosters a deep appreciation for research, cultivates a scientific mindset, and nurtures critical thinking skills through learning from top scientists worldwide.

**Highlights:** Guidance for top science institutions, Learn from global scientists, Develop scientific mindset, Nurture critical thinking, Mentorship from research scholars

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Physics Galaxy free?

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

### Is SciAstra free?

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

### Which has better reviews, Physics Galaxy or SciAstra?

Physics Galaxy is rated higher. Physics Galaxy averages 5.0 out of 5 from 2 ratings, while SciAstra averages 3.5 from 2 ratings.

### Do Physics Galaxy or SciAstra have ads?

Neither Physics Galaxy nor SciAstra shows ads.

### Which is updated more often, Physics Galaxy or SciAstra?

Physics Galaxy ships an update every 2 months, and SciAstra every 9 months. Most recently, Physics Galaxy was updated on June 5, 2026 and SciAstra on September 4, 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.*