Space Orbit vs PaperCrush
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Space Orbit
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・自由に宇宙船を発射してその軌道を眺める、ただそれだけのアプリです。 ・画面のどこかをスワイプすると宇宙船が発射されます。 ・発射された宇宙船は地球と月の重力に従い運動を続けます。 ・好きな場所から宇宙船を発射し、その軌道を眺めて楽しんでください。 ・詳細は以下サイトをご覧ください。 https://zenn.dev/ta168/articles/space-orbit_app - This app is just for enjoying watching orbits. - Swipe anywhere on the screen to launch a spacecraft. - Once launched, the spacecraft will continue to move under the gravity of Earth and the Moon. - Launch spacecraft from anywhere and enjoy watching their orbits. - Check out the homepage below for details. https://zenn.dev/ta168/articles/space-orbit_app
PaperCrush
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.
- 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
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This app is for researchers and students who follow the latest academic papers, especially preprints submitted to arXiv. With an intuitive Tinder-like swipe interface, you can "Like" or "Skip" new papers. 【Key Features】 * **Paper Feed**: Receive the latest papers in categories tailored to your interests daily. Easily organize them with swipes. * **AI Translation**: AI translates paper titles and abstracts into your specified language (e.g., English). Understand content without language barriers. * **Like List**: Manage liked papers in a list. You can also search, filter by category, and manage read/unread status. * **Trending**: Check papers gaining attention from other users in a ranking format. Don't miss research trends in your field. * **Detailed View**: Beautifully displays LaTeX formulas. Links to PDF and web pages are also included. * **Category Selection**: Select your areas of interest from a wide range of arXiv categories, including Computer Science, Physics, and Mathematics. Make your daily paper check faster and smarter. We support your research activities. (Data provided by: arXiv)
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Space Orbit | PaperCrush |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| Update frequency | Daily | Daily |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17 |
| Further details — not scored | ||
| Size | 4 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | TOSHIYA ARAI | Naoki Takahashi |
In-app purchases
Space Orbit
No in-app purchases
PaperCrush
No in-app purchases









