Vulpe vs PaperCrush
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vulpe
This app helps you manage your reading goals by breaking down large books into daily page targets. It visualizes your progress, alerting you if you're ahead or behind schedule. Log your daily study sessions to stay on track and achieve your academic objectives.
- Set book completion dates
- Calculate daily page goals
- Log daily study progress
- Visualize progress ahead/behind schedule
- Receive progress notifications
- Archive completed goals
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Vulpe helps you stay on track and finish your reference books as planned. It visualizes your progress and shows how far ahead or behind schedule you are, so you always know where you stand. If you’re behind, study a bit more to catch up. If you’re ahead, enjoy the extra time or move further ahead. Just set your completion date, and Vulpe calculates how many pages to study each day. Follow the plan and reach your goal with ease. How it works: 1. Add your book, total pages, and target date. 2. Log your daily study progress. 3. Get notified when you’re falling behind or moving ahead. 4. Archive completed goals and track your achievements anytime. Start your efficient, well-organized study routine with Vulpe today.
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 in-app purchases: PaperCrush at none against Vulpe's 4. PaperCrush also leads on update cadence (daily vs every 2 weeks). Vulpe's advantage is review sentiment (95% vs 67%) and iOS requirement (13.0 vs 17). On price, ads 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. Vulpe sells 4 in-app purchases, starting at $4.99 per month. PaperCrush asks for nothing beyond the download.
Vulpe ships an update every 2 weeks, PaperCrush daily. The most recent releases landed on September 22, 2026 and August 19, 2026 respectively.
| Parameter | Vulpe | PaperCrush |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (4 ratings) — better | — |
| Positive reviews | 95.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 4 — better | — |
| Update frequency | Every 2 weeks | Daily — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17 |
| Further details — not scored | ||
| Size | 188 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | UniLink Inc. | Naoki Takahashi |
Customer experience
Vulpe
PaperCrush
In-app purchases
Vulpe
- Vulpe Premium Monthly7 Days trial$4.991 Month
- Vulpe Premium Annual7 Days trial$12.991 Year
- Vulpe Premium Yearly7 Days trial$39.991 Year
- Vulpe Premium Outright$29.99
PaperCrush
No in-app purchases









