HemeOncBuddy vs Primum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HemeOncBuddy
This app provides quick access to practice-changing clinical trials in Hematology and Oncology. It offers simplified summaries of trial background, inclusion/exclusion criteria, primary endpoints, and outcomes for easy reference.
- Practice-changing clinical trial summaries
- Hematology and Oncology focus
- Simplified trial information
- Inclusion and exclusion criteria
- Primary endpoints and outcomes
- Quick reference tool
Read full descriptionHide full description
HemeOncBuddy is a free study hub built for hematology and oncology fellows and trainees - everything you need to keep up with the literature and prep for boards, in one fast, searchable app. WHAT'S INSIDE - 1,500+ pivotal clinical-trial summaries, each in the same structure (background, inclusion criteria, arms, primary/secondary endpoints, median follow-up, key results, notable toxicities) so you can scan them quickly. - A Question Bank with board-style questions, tutor and timed modes, explanations, and progress tracking. - ~2,000 active-recall flashcards across oncology, malignant and benign heme, and pharmacology — plus visual staging decks. - 120+ concise disease-site board-prep notes. - A conference & abstract-deadline tracker so you never miss a submission window. MADE FOR STUDYING - Full dark mode and adjustable text size. - Optional free account (Sign in with Apple, Google, or email) to sync your saved trials, Qbank progress, and notes across iPhone, iPad, and Mac. - No ads. No paywall. No login required to browse. HemeOncBuddy is an educational study aid only. It is not a substitute for medical advice, clinical judgment, or current guidelines, and must not be used to diagnose or treat patients. Always verify against primary literature and current guidelines.
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
Read full descriptionHide full description
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 rating: HemeOncBuddy at 5.0 against Primum's 4.2. HemeOncBuddy also leads on ads (none vs shown) and monetization model (free vs ad-supported). Primum's advantage is update cadence (every 2 months vs every 24 months). On price, review sentiment, 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.
HemeOncBuddy holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 17 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
HemeOncBuddy ships an update every 24 months, Primum every 2 months. The most recent releases landed on August 5, 2026 and August 4, 2026 respectively.
| Parameter | HemeOncBuddy | Primum |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (17 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 17 — better | 5 |
| Update frequency | Every 24 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 16 MB | 53 MB |
| Age rating | 17+ | 17+ |
| Developer | Veli Bakalov | PRIMUM HEALTH, INC. |
Customer experience
HemeOncBuddy
Primum
In-app purchases
HemeOncBuddy
No in-app purchases
Primum
No in-app purchases








