# Impact Network vs Primum

The clearest difference is review sentiment: Primum at 100% against Impact Network's 50%. Primum also leads on rating (4.2 vs 3.5). Impact Network's advantage is ads (none vs shown) and monetization model (free vs ad-supported). 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.

Primum holds the better App Store score, 4.2 against 3.5. That said, the two scores are not equally well evidenced: Impact Network has 43 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 50% of Impact Network's written reviews are positive against 100% of Primum's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Impact Network | Primum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (43 ratings)](https://appshunter.io/ios/app/impact-network/id370146750/reviews) | **[4.2 (5 ratings)](https://appshunter.io/ios/app/primum/id6651755259/reviews)** |
| Number of ratings | **43** | 5 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Size | 43 MB | 53 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [ImpactRx Inc.](https://appshunter.io/developer/370146753) | [PRIMUM HEALTH, INC.](https://appshunter.io/developer/1707581637) |

## What reviewers say

### Impact Network

[App page](https://appshunter.io/ios/app/impact-network/id370146750)

This app connects physicians with pharmaceutical promotion research. Members provide real-time insights on how promotional efforts influence prescribing behavior, helping to shape the future of the healthcare industry. Participants receive honorariums for their contributions.

**Highlights:** Real-time feedback on pharmaceutical promotion, International physician panel, Country and specialty tailored experience, Generous honorarium packages, Influence healthcare industry future

**Features:** macOS Compatibility

**In-app purchases:** none


### Primum

[App page](https://appshunter.io/ios/app/primum/id6651755259)

Connect with expert oncologists for case-specific advice and treatment decision support. This app facilitates direct messaging with specialists, offering actionable insights and a platform to manage your inquiries efficiently.

**Highlights:** Search and filter expert oncologists, Direct messaging with specialists, Real-time chat and notifications, Case-specific advice, Inbox management, Reference past inquiries

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Impact Network free?

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

### Is Primum free?

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

### Which has better reviews, Impact Network or Primum?

Primum is rated higher. Impact Network averages 3.5 out of 5 from 43 ratings, while Primum averages 4.2 from 5 ratings.

### Do Impact Network or Primum have ads?

Primum shows ads; Impact Network does not.

### Which is updated more often, Impact Network or Primum?

Impact Network ships an update every 2 months, and Primum every 2 months. Most recently, Impact Network was updated on October 8, 2026 and Primum on October 2, 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.*