# Solarys vs GPT Solar System Explorer

The clearest difference is review sentiment: Solarys at 86% against GPT Solar System Explorer's 0%. Solarys also leads on in-app purchases (none vs 5) and iOS requirement (13.0 vs 15.0). GPT Solar System Explorer's advantage is rating (4.7 vs 3.8) and update cadence (every 2 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. GPT Solar System Explorer sells 5 in-app purchases, starting at $5.99 per month. Solarys asks for nothing beyond the download.

GPT Solar System Explorer holds the better App Store score, 4.7 against 3.8. That said, the two scores are not equally well evidenced: GPT Solar System Explorer has 90 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 86% of Solarys's written reviews are positive against 0% of GPT Solar System Explorer's, so the app with the better star average is not the one people write more warmly about.

Solarys ships an update every 2 months, GPT Solar System Explorer every 2 weeks. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Solarys | GPT Solar System Explorer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (5 ratings)](https://appshunter.io/ios/app/solarys/id1489101236/reviews) | **[4.7 (90 ratings)](https://appshunter.io/ios/app/gpt-solar-system-explorer/id6743086286/reviews)** |
| Number of ratings | 5 | **90** |
| Positive reviews | **85.7% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Subscription |
| Size | 150 MB | 288 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marcello De Palo](https://appshunter.io/developer/1174258586) | [Apic Ways](https://appshunter.io/developer/1635604961) |

## What reviewers say

### Solarys

[App page](https://appshunter.io/ios/app/solarys/id1489101236)

Explore the solar system with interactive 3D models and engaging quizzes. Discover planets and space curiosities as if you were an astronaut. This educational app brings the cosmos to your device.

**Highlights:** 3D planet models, Interactive space exploration, Educational quizzes, Space curiosities, Astronaut experience simulation

**In-app purchases:** none


### GPT Solar System Explorer

[App page](https://appshunter.io/ios/app/gpt-solar-system-explorer/id6743086286)

Explore our Solar System in an interactive 3D environment powered by AI. Discover stunning images and videos from space agencies, and ask your AI guide anything about the cosmos. Perfect for curious minds of all ages.

**Highlights:** Interactive 3D Solar System model, AI-powered cosmic guide, NASA, SpaceX, ESA imagery & videos, Planet and mission details, Voice-activated Q&A, Intuitive controls for all ages

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Subscription | $5.99 | per month |
| Monthly Super Pro Subscription | $19.99 | per month |
| Monthly Ultra Pro Subscription | $29.99 | per month |
| Yearly Pro Subscription | $39.99 | per year |
| AI coins | $5.99 | one-time |


## Frequently asked questions

### Is Solarys free?

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

### Is GPT Solar System Explorer free?

GPT Solar System Explorer is free to download, with in-app purchases available.

### Which has better reviews, Solarys or GPT Solar System Explorer?

GPT Solar System Explorer is rated higher. Solarys averages 3.8 out of 5 from 5 ratings, while GPT Solar System Explorer averages 4.7 from 90 ratings.

### Do Solarys or GPT Solar System Explorer have ads?

Neither Solarys nor GPT Solar System Explorer shows ads.

### Which is updated more often, Solarys or GPT Solar System Explorer?

Solarys ships an update every 2 months, and GPT Solar System Explorer every 2 weeks. Most recently, Solarys was updated on October 4, 2026 and GPT Solar System Explorer on October 8, 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.*