Impact Network vs Primum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Impact Network
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.
- Real-time feedback on pharmaceutical promotion
- International physician panel
- Country and specialty tailored experience
- Generous honorarium packages
- Influence healthcare industry future
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Impact Network is the healthcare industry’s leading pharmaceutical promotion research organization. Our international panel of physicians helps us understand how pharmaceutical promotion efforts influence prescribing behavior. Using the latest mobile technology, our physicians provide their valuable insight on the impact of pharmaceutical promotion as it occurs. This ‘real time’ approach sets our organization apart from all others in the industry. As an Impact Network member, you will provide your expertise and insights via our mobile app to help influence the future of the healthcare industry. The app is tailored for your specific country and specialty. We also provide international support to make your experience in our study easy and enjoyable. In return for their participation, physicians receive a generous honorarium package and opportunities to earn additional honorarium through various research projects. For more information about Impact Network, please download this app and tap register@impactrx.com on the log in screen to send us an email. We will contact you with additional information about our program.
Primum
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.
- Search and filter expert oncologists
- Direct messaging with specialists
- Real-time chat and notifications
- Case-specific advice
- Inbox management
- Reference past inquiries
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Sometimes even the experts need experts. Primum helps oncologists get more confidence in their treatment decisions by making it easy to find other expert oncologists and get actionable, case-specific advice fast. The official Primum app puts high-quality advice from expert oncologists in your pocket. "Prompt response. Excellent suggestions outlining the different treatment options/approaches for a rare clinical scenario without much data in the literature to guide decision making" - Community Oncologist, FL "It was really helpful to hear the expert recommendations and I agree with his recommendations. This topic is quite interesting and difficult to deal with. I appreciate a lot the recommendations." - Community Oncologist, MA "Very detailed response, clear thought process, mentioned experience with similar case. Overall - excellent!" - Community Oncologist, CT Find and select an expert - Search with keywords or phrases - Filter for expertise based on focus area - Review their experience before choosing to message Message an expert directly - Choose the expert you wish to message - Submit a brief description of your question directly to your chosen expert - Chat in real-time if you are both online, or get notified when they respond Get notified of important inquiry updates - See when you have unread messages - View the count of unread messages - Receive text and/or email alerts when you get a new message, a new inquiry, or when an inquiry is closed Rate your experience - Submit ratings and feedback on every question, to help Primum and our experts improve Manage your inbox - Keep your inbox uncluttered and focused by closing inquiries once they have been answered Reference past questions - View all closed inquiries to refer to past questions and answers
Screenshots
Verdict
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.
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.
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.
| Parameter | Impact Network | Primum |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (43 ratings) | 4.2 (5 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 43 — better | 5 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 43 MB | 53 MB |
| Age rating | 17+ | 17+ |
| Developer | ImpactRx Inc. | PRIMUM HEALTH, INC. |
Customer experience
Impact Network
Primum
In-app purchases
Impact Network
No in-app purchases
Primum
No in-app purchases









