# Space Orbit vs PaperCrush

The clearest difference is ads: Space Orbit at none against PaperCrush's shown. Space Orbit also leads on iOS requirement (15.6 vs 17). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly daily. The most recent releases landed on September 12, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | Space Orbit | PaperCrush |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Daily | Daily |
| Monetization | — | Ad-supported |
| Size | 4 MB | 13 MB |
| Requires iOS | **15.6** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TOSHIYA ARAI](https://appshunter.io/developer/1798408372) | [Naoki Takahashi](https://appshunter.io/developer/1713880270) |

## What reviewers say

### Space Orbit

[App page](https://appshunter.io/ios/app/space-orbit/id6742439600)

**Features:** macOS Compatibility

**In-app purchases:** none


### PaperCrush

[App page](https://appshunter.io/ios/app/papercrush/id6745439518)

Discover and organize academic papers with a swipe-based interface. AI translation helps overcome language barriers, while trending sections highlight popular research. Tailor your feed to specific academic categories.

**Highlights:** Swipe interface for paper discovery, AI translation of titles and abstracts, Organize liked papers, View trending research, Detailed paper view with LaTeX support, Select custom academic categories

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

**In-app purchases:** none


## Frequently asked questions

### Is Space Orbit free?

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

### Is PaperCrush free?

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

### Do Space Orbit or PaperCrush have ads?

PaperCrush shows ads; Space Orbit does not.

### Which is updated more often, Space Orbit or PaperCrush?

Space Orbit ships an update daily, and PaperCrush daily. Most recently, Space Orbit was updated on September 12, 2026 and PaperCrush on August 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*