Comparison

Manta Cares vs CarrotStage

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Manta Cares

This app provides evidence-based cancer information, practical care tools, and connections to support resources for patients and their care partners. It aims to help users manage a cancer diagnosis with confidence, understand treatment options, and navigate daily challenges.

Highlights
  • Evidence-based cancer information
  • Cancer treatment tracking
  • Symptom monitoring
  • Appointment organization
  • Question preparation for doctors
  • Support resource directory
  • AI-powered cancer partner
Features
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Manta Cares is a free cancer support app for cancer patients and care partners. Designed to help you manage a cancer diagnosis with confidence, it delivers evidence-based cancer information, practical cancer care tools, and connections to trusted support resources — at no cost, ever. We're cancer patients, survivors, care partners, oncologists, and nurses who have been personally impacted by cancer. We built the tools we wish we'd had. We've been there. We get it. Getting help shouldn't be the fight of your life. With Manta Cares, cancer patients and caregivers can: • Understand their cancer diagnosis and treatment options • Navigate treatment side effects and daily challenges • Prepare confident questions for their oncologist or care team • Connect with financial, legal, and emotional support resources KEY FEATURES Cancer Maps Interactive, step-by-step cancer guides built with 100+ medical professionals and backed by world-leading oncologists. Covers diagnosis, treatment options, and what comes next, in plain language — no medical jargon. Cancer Care Tools Track cancer treatment appointments, medications, and symptoms. Build question lists before doctor visits. Stay organized throughout your cancer experience. Cancer Support Directory Access vetted resources from recognized organizations covering financial assistance, insurance navigation, legal patient rights, mental health support, and more. HopeAI, Your Cancer Partner A purpose-built AI partner grounded in physician-reviewed cancer content. Hope helps you track how you're feeling, prepare for appointments, and understand what's next, so you feel less alone between visits. Trusted by thousands of cancer patients and caregivers across the United States. Manta Cares is the free cancer app built to go with you from diagnosis through survivorship, guiding patients and care partners through every step, without the jargon, from people who've walked this path.

About

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

Manta Cares4 screens
CarrotStage4 screens

Verdict

The call

Manta Cares and CarrotStage are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Manta Cares ships an update weekly, CarrotStage every 10 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

ScorecardNo meaningful differences
Manta Cares versus CarrotStage: the parameters behind the verdict, then further details
ParameterManta CaresCarrotStage
PriceFreeFree
Rating5.0 (13 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings13 — better—
Update frequencyWeekly — betterEvery 10 days
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.0 — better
Further details — not scored
Size40 MB18 MB
Age rating17+17+
DeveloperManta Cares IncMediprism

In-app purchases

None

Manta Cares

No in-app purchases

None

CarrotStage

No in-app purchases

Questions

Is Manta Cares free?
Manta Cares is free to download, with no in-app purchases.
Is CarrotStage free?
CarrotStage is free to download, with no in-app purchases.
Do Manta Cares or CarrotStage have ads?
Neither Manta Cares nor CarrotStage shows ads.
Which is updated more often, Manta Cares or CarrotStage?
Manta Cares ships an update weekly, and CarrotStage every 10 days. Most recently, Manta Cares was updated on November 5, 2026 and CarrotStage on November 10, 2026.

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