# Research Notes vs eResearch

The clearest difference is rating: eResearch at 4.6 against Research Notes's 4.0. eResearch also leads on in-app purchases (none vs 3) and ads (none vs shown). Research Notes's advantage is update cadence (weekly vs every 5 weeks). On price, monetization model, device support and iOS requirement there is nothing between them.

Both are free to download. Research Notes sells 3 in-app purchases, starting at $7.49 per 6 months. eResearch asks for nothing beyond the download.

eResearch holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: eResearch has 75 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 71% of Research Notes's written reviews are positive against 90% of eResearch's.

Research Notes ships an update weekly, eResearch every 5 weeks. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Research Notes | eResearch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/research-notes/id1472037622/reviews) | **[4.6 (75 ratings)](https://appshunter.io/ios/app/eresearch/id1515467795/reviews)** |
| Number of ratings | 4 | **75** |
| Positive reviews | 71.4% of reviews | **89.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 26 MB | 136 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Omelette, Inc](https://appshunter.io/developer/984352813) | [Rose Research Center,LLC](https://appshunter.io/developer/1501685429) |

## What reviewers say

### Research Notes

[App page](https://appshunter.io/ios/app/research-notes/id1472037622)

Access RSS feeds from hundreds of scientific journals across various subject categories. Download PDFs and utilize a text-to-speech feature for articles. Organize your favorite journals and discover new ones.

**Highlights:** Hundreds of journal RSS feeds, Subject category filtering, PDF download functionality, Text-to-speech for articles, Favorite journals section, New journal additions

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF to Audio for 6 months | $7.49 | per 6 months |
| PDF to Audio for 12 Months | $11.99 | per year |
| Research Notes | $4.99 | one-time |


### eResearch

[App page](https://appshunter.io/ios/app/eresearch/id1515467795)

Participate in clinical research from home to help advance smoking cessation and harm reduction. This platform connects volunteers with studies focused on nicotine addiction, offering remote participation, online consent, and compensation. Advance science and contribute to a healthier future.

**Highlights:** Volunteer registration for nicotine users, Online eConsent process, Compensation for participation, Remote study assessments, Telemedicine visits, Secure participant communication

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 User friendly and easy to use
- 👍 Helpful and thorough recruiters
- 👍 Consistent and on-time notifications
- 👍 Great for keeping up with studies
- 👍 Easy to navigate, even for less tech-savvy users

**What reviewers complain about**

- 🐛 Difficult to reset email
- 🐛 App notifications cannot be turned on outside the app
- 🐛 Surveys sometimes not sent
- 🐛 No taste (for Juul product)
- 🐛 Annoying review requests daily

**Reported bugs**

- Difficult to reset email
- App notifications cannot be turned on outside the app
- Surveys sometimes not sent

**Requested features**

- Allow users to turn on app notifications outside the app


## Frequently asked questions

### Is Research Notes free?

Research Notes is free to download, with in-app purchases available.

### Is eResearch free?

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

### Which has better reviews, Research Notes or eResearch?

eResearch is rated higher. Research Notes averages 4.0 out of 5 from 4 ratings, while eResearch averages 4.6 from 75 ratings.

### Do Research Notes or eResearch have ads?

Research Notes shows ads; eResearch does not.

### Which is updated more often, Research Notes or eResearch?

Research Notes ships an update weekly, and eResearch every 5 weeks. Most recently, Research Notes was updated on October 3, 2026 and eResearch on October 11, 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.*