# Space Station Research Xplorer vs LearnChess Pro

The clearest difference is in-app purchases: Space Station Research Xplorer at none against LearnChess Pro's 1. Space Station Research Xplorer also leads on update cadence (every 5 weeks vs every 9 months) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. LearnChess Pro sells 1 one-off in-app purchase. Space Station Research Xplorer asks for nothing beyond the download.

Space Station Research Xplorer ships an update every 5 weeks, LearnChess Pro every 9 months. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Space Station Research Xplorer | LearnChess Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/space-station-research-xplorer/id934070569/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 151 MB | 85 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [NASA](https://appshunter.io/developer/355542146) | [TagMango Inc](https://appshunter.io/developer/1611765353) |

## What reviewers say

### Space Station Research Xplorer

[App page](https://appshunter.io/ios/app/space-station-research-xplorer/id934070569)

Explore a vast collection of experiments conducted on the International Space Station, both past and present. Discover the results and benefits of microgravity research through interactive media, detailed descriptions, and visual tours of the station's modules and external facilities.

**Highlights:** Browse ISS experiments by category, View experiment results and benefits, Interactive lab and facility tours, Search for specific experiments, Add experiments to favorites, Access science-related videos

**Features:** Vision Pro support

**In-app purchases:** none


### LearnChess Pro

[App page](https://appshunter.io/ios/app/learnchess-pro/id6740694205)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Your Self-Learning Roadmap | $7.99 | one-time |


## Frequently asked questions

### Is Space Station Research Xplorer free?

Space Station Research Xplorer is free to download, with no in-app purchases.

### Is LearnChess Pro free?

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

### Do Space Station Research Xplorer or LearnChess Pro have ads?

Neither Space Station Research Xplorer nor LearnChess Pro shows ads.

### Which is updated more often, Space Station Research Xplorer or LearnChess Pro?

Space Station Research Xplorer ships an update every 5 weeks, and LearnChess Pro every 9 months. Most recently, Space Station Research Xplorer was updated on November 1, 2026 and LearnChess Pro on October 28, 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.*