# R Discovery vs AcePrep

The clearest difference is in-app purchases: AcePrep at none against R Discovery's 6. R Discovery's advantage is ratings volume (928 vs 1) and device support. On price and rating there is nothing between them.

Both are free to download. R Discovery sells 6 in-app purchases, starting at $11.99 per month. AcePrep asks for nothing beyond the download.

AcePrep holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: R Discovery has 928 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | R Discovery | AcePrep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (928 ratings)](https://appshunter.io/ios/app/r-discovery-academic-research/id1508182175/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/aceprep/id6765473536/reviews)** |
| Number of ratings | **928** | 1 |
| Positive reviews | 57.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Monthly | — |
| Monetization | Freemium | **Free** |
| Size | 56 MB | 4 MB |
| Requires iOS | **15** | 17.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [CACTUS COMMUNICATIONS SERVICES PTE. LTD](https://appshunter.io/developer/1817173784) | [Dan Sokolsky](https://appshunter.io/developer/1893825460) |

## What reviewers say

### R Discovery

[App page](https://appshunter.io/ios/app/r-discovery-academic-research/id1508182175)

Access and discover over 300 million research papers with AI-powered tools. Understand findings, chat with PDFs, and organize your academic library. Stay current in your field with personalized feeds and alerts.

**Highlights:** Discover 300M+ research papers, AI-powered research workflows, Chat with PDFs, Listen to research papers, Personalized research feeds, Organize academic library, Translate research papers

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $11.99 | per month |
| Monthly | $24.99 | per month |
| Monthly | $25.00 | per month |
| Yearly | $69.00 | per year |
| Yearly | $139.99 | per year |
| Yearly | $143.99 | per year |

**What reviewers like**

- 👍 Wonderful site for research professionals
- 🚀 Fantastic app for researchers
- 💡 Provides relevant paper recommendations

**What reviewers complain about**

- 🐛 Slow and choppy performance
- 🐛 Buggy and unreliable features
- 🐛 Difficult to use certain core functions
- 🐛 Downloading PDFs doesn't work

**Reported bugs**

- Home screen takes a long time to load
- Audio translation feature doesn't work
- Buttons are extremely slow
- Switching between dark and light mode is glitchy

**Requested features**

- Add option to view author information in preview
- Enable screen rotation for iPad users
- Add more advanced search functionality
- Allow canceling of export in progress
- Improve integration with Zotero


### AcePrep

[App page](https://appshunter.io/ios/app/aceprep/id6765473536)

This app intelligently adapts to your SAT preparation by focusing on areas where you need the most improvement. It offers expert-crafted questions with detailed explanations and full-length practice tests to simulate the real exam. Track your progress with daily streaks and accuracy trends.

**Highlights:** Adaptive learning based on performance, Expert-crafted SAT questions, Detailed question explanations, Full-length practice tests, Spaced repetition for concept retention, Progress tracking and analytics, Diagnostic assessment

**In-app purchases:** none


## Frequently asked questions

### Is R Discovery free?

R Discovery is free to download, with in-app purchases available.

### Is AcePrep free?

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

### Which has better reviews, R Discovery or AcePrep?

AcePrep is rated higher. R Discovery averages 4.8 out of 5 from 928 ratings, while AcePrep averages 5.0 from 1 ratings.

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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.*