HemeOncBuddy vs CarrotStage
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
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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.
CarrotStage
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A calculation tool implementing the published TNM staging classifications. It reports only what those classifications define; it does not make diagnostic, prognostic or treatment judgements. A calculated stage is reference material; medical judgement must always be confirmed by the treating clinician. ■ About CarrotStage CarrotStage is a TNM cancer staging calculator for healthcare professionals. Enter the staging elements — T, N, M and whatever else a chapter defines — and it returns the stage group. It follows AJCC 9th / UICC 9th, and the 8th edition where that is still current for a cancer. It cuts out looking up and cross-checking staging tables at the point of care, and shows the reasoning alongside the result so it can be verified. ■ Coverage The major cancers of the regions below. Coverage continues to expand. Thorax: Lung, Diffuse Pleural Mesothelioma, Thymus Head and neck: Nasopharynx, Oropharynx (HPV-associated and p16-negative), Hypopharynx, Larynx, Lip and Oral Cavity, Nasal Cavity and Paranasal Sinuses, Salivary Gland Carcinoma, Mucosal Melanoma of the Head and Neck, Cutaneous Carcinoma of the Head and Neck, Cervical Nodes & Unknown Primary Female reproductive organs: Ovary, Fallopian Tube & Primary Peritoneal, Corpus Uteri Carcinoma, Corpus Uteri Sarcoma, Cervix Uteri, Vulva, Vagina, Gestational Trophoblastic Neoplasm Upper gastrointestinal tract: Esophagus & Esophagogastric Junction, Stomach, Small Intestine The current list is always available from the menu at the top of the app. ■ What it does · Shows the reasoning, not just the answer It shows step by step which criterion produced T2 rather than T3, so the result can be verified instead of taken on trust. · Makes contradictory input structurally impossible Choose carcinoma in situ and the nodal fields are disabled; with no nodes, the ENE switch locks. Impossible combinations are never formed. · Keeps clinical and pathological apart cTNM and pTNM use different criteria. Switching track switches the input fields to match. · Does not hide its sources Each cancer states the edition applied and the material behind it. Where sources read differently, a warning names the criterion this app applied. · Korean and English, and a tablet layout In landscape a tablet shows inputs and result side by side. On Android 13 and above you can set a language for this app alone. ■ Privacy · Staging requires no internet connection · Nothing you enter is stored or transmitted · No accounts, no sign-in, no advertising, no usage analytics · No device permissions are requested Used where patient information is handled, the app has no communication path at all. ■ Who it is for Physicians, pathologists, cancer registrars, medical trainees and other healthcare professionals. It is not a consumer health information app, and it is not a tool for patient self-diagnosis. ■ Sources Staging criteria were implemented from the literature that published each classification and from official staging materials. Each screen states the edition applied and the nature of the evidence, so you can judge whether to check the original. Classifications are revised over time. Please confirm the current criteria against the official materials of the responsible bodies. ■ Notices This app is not affiliated with, endorsed by or certified by the AJCC (American Joint Committee on Cancer), the UICC (Union for International Cancer Control), the IASLC (International Association for the Study of Lung Cancer) or the CAP (College of American Pathologists). For medical advice, diagnosis or treatment, always consult a qualified healthcare professional. ■ Developer Developed by Mediprism. ■ Contact mediprism@mediprism.net Telling us the app version, device model and cancer concerned speeds things up. If a result seems to differ from the criteria, write to the same address. ■ User manual https://mediprism.net/carrotstage/manual/
Screenshots
Verdict
The clearest difference is update cadence: CarrotStage at every 10 days against HemeOncBuddy's every 24 months. On price, ads, 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 ships an update every 24 months, CarrotStage every 10 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.
| Parameter | HemeOncBuddy | CarrotStage |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (18 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 18 — better | — |
| Update frequency | Every 24 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 16 MB | 18 MB |
| Age rating | 17+ | 17+ |
| Developer | Veli Bakalov | Mediprism |
In-app purchases
HemeOncBuddy
No in-app purchases
CarrotStage
No in-app purchases
Questions
Is HemeOncBuddy free?
Is CarrotStage free?
Do HemeOncBuddy or CarrotStage have ads?
Which is updated more often, HemeOncBuddy or CarrotStage?
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