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Modern hematology
cell counting.
Clear insight.
HemaSync is a manual differential cell counter for blood smears and bone marrow, made by a practicing pathologist for laboratory professionals, on Android, iOS and the web. Optional voice input and optional AI analysis of your counts and notes, for review by qualified professionals.
Designed by a Pathologist. Built for modern laboratories.
✓Differential Target
cells counted
AI analysis
Illustrative example
AI analysis
“Lymphocytes form 62% of this 100-cell count; morphology review recommended.”
Illustrative exampleCASE-250897-001Saved · Today, 09:42
Designed around real laboratory workflow.
Built by a practicing pathologist to simplify differential counting while preserving clinical control and improving efficiency.
Manual precision
Every cell.
Exactly where
you need it.
Fast, intuitive manual counting for peripheral blood smear and bone marrow examinations—without pulling attention from the specimen.
Tap a cell tile, press its key on a keyboard, or say its name. Manual counting and case saving keep working offline once the app is open, and a count can be exported as a PDF report or a CSV file.
Explore our hematology workflow guides:
- Manual Differential Cell Counting: A Practical Hematology Workflow
- Peripheral Blood Smear Differential Count: Workflow and Documentation
- Bone Marrow Differential Count: Workflow and Cell Classification
- 100 vs 200 vs 500 Cells in a Manual Differential: What Changes?
- Digital and Voice-Assisted Differential Counting: Benefits and Safe Use
Clinical control stays with you
Differential count8 / 100
Microphone-based counting
Speak.
We count.
Count hands-free using voice input, so your attention can stay on morphology and clinical context.
Listening for “Neutrophil”
AI analysis
Context that
changes clarity.
Request AI analysis of your counts and notes, for review by qualified professionals. HemaSync assists your workflow; healthcare professionals remain in control.
AI analysis uses credits. A free monthly allowance is included, with paid credit top-ups available when needed.
AI analysis
Report preview · HemaSyncIllustrative example
“Myeloid maturation shift along with marked eosinophilia needs investigation into clonal myeloid disorders or reactive processes.”
Illustrative example of AI analysis output. For review by qualified professionals.
How it works
See the workflow.
From count to clarity.
Watch a concise demonstration of the HemaSync workflow.
Case management
Every case.
One continuous story.
From the first count to the saved case, HemaSync keeps each case’s counts and notes together, ready to review, report and return to.
Where your cases are kept
Every case is saved on your device, and manual counting and case saving keep working offline once the app is open. Without signing in, cases stay on that device. When you sign in with Google or Apple, every case you save is also stored in HemaSync Cloud under your account and appears on each device where you sign in; changes made offline are sent automatically when you are back online.
Each case keeps its cell counts, specimen type, case name and notes together, and a count can be exported as a CSV file or downloaded as a printable PDF report. Delete a single case in Saved Cases, or delete your account in Settings, which permanently deletes all your cases from HemaSync Cloud.
Do not enter patient names or identifiers in case notes. Read the Privacy Policy for details.
Specimen received
Counting started
AI analysis generated
Case saved
Platform experience
Built for your lab.
Wherever you work.
Use HemaSync on Android, iOS, or in your browser.
Android · AvailableWeb · AvailableiOS · Available
Dr. Umesh KrishnaFounder & Developer
Designed by a Pathologist.
Built for modern laboratories.
I’m Dr. Umesh Krishna, a practicing pathologist. HemaSync began as a personal project to make the manual differential counting I perform regularly faster, more consistent, and less tedious, while keeping interpretation and decision-making firmly in the hands of the pathologist.
I began developing HemaSync as an independent project because useful laboratory tools should not be limited to institutions that can afford expensive proprietary systems. It is my contribution to the community of pathologists, trainees, and laboratory professionals I am part of—created in response to real workflow challenges encountered in everyday practice.
HemaSync is built around a human-first principle: AI assists; professional judgment remains with the pathologist.
— Dr. Umesh Krishna, MD (Pathology)
Assistant Professor of Pathology
Arignar Anna Cancer Memorial Hospital & Research Centre
Founder & Developer, HemaSync
Vanthilium is the independent software venture under which HemaSync is developed.
Institutional affiliation is provided for professional identification only and does not imply institutional endorsement.
Security
Built with security at every layer.
Clinical work deserves infrastructure that is deliberate, dependable, and quiet in the background.
Secure cloud infrastructure
Designed for protected communication and sync.
Cloud or local storage
Choose the workflow that fits your environment.
Built for people who read blood and marrow smears.
Built for modern hematology teams and the people learning beside them.
PathologistsHematologistsLaboratory ProfessionalsPathology ResidentsMedical StudentsTeaching InstitutionsDiagnostic Laboratories
Less time counting.
More time at the microscope.
Experience a modern hematology workflow built around clinical judgment.
Browser access
Use HemaSync on the web
Use HemaSync directly in your browser. Sign in inside the Web App.
Open Web AppMobile apps
Take HemaSync with you
Choose the HemaSync app for your phone or tablet.
Product answers
A few clear answers.
Product
What is HemaSync?
HemaSync is a digital hematology workflow tool for recording manual differential counts and organizing case work. It supports peripheral blood and bone marrow workflows, with optional voice input and optional AI analysis of your counts and notes, for review by qualified professionals. The professional examining the specimen identifies the cells.
Who is HemaSync for?
HemaSync is designed for pathologists, pathology trainees, and laboratory professionals who perform or review manual differential counts. It supports their workflow and does not replace training, laboratory protocols, or independent professional judgment.
What does HemaSync do?
It lets a user record and track identified blood or marrow cells toward a selected count target, organize case details, and optionally use voice entry or AI analysis. Cell identification and clinical interpretation remain with the healthcare professional.
Is HemaSync a hematology differential cell counter?
Yes. HemaSync is a digital cell-counting tool for manual hematology differentials. The user examines the specimen and selects the cell type; HemaSync records the count and helps organize the workflow. It does not automatically identify cells from an image.
Counting, voice, and AI
What is manual differential counting?
Manual differential counting is identifying and tallying cells while examining a specimen. HemaSync records the observations and tracks progress toward a selected count target; the person examining the specimen identifies each cell.
Can HemaSync be used for peripheral blood differential counting?
Yes. HemaSync supports manual differential counting for peripheral blood smears. The user records the cells they identify and reviews the resulting count in the specimen and clinical context.
Can HemaSync be used for bone marrow differential counting?
Yes. HemaSync supports manual differential counting for bone marrow examinations. It records and organizes the user's observations; it does not determine cell identity or replace morphological assessment.
Does HemaSync support voice-assisted counting?
Yes. Voice input provides a hands-free way to record supported cell types while examining a specimen. Review the on-screen count to confirm each spoken entry was captured correctly.
Does HemaSync provide AI analysis?
Yes. Optional AI analysis of your counts and notes is available, for review by qualified professionals. Its output may be incomplete or incorrect and should be checked against the smear, patient context, and applicable laboratory standards.
Does HemaSync AI replace a pathologist?
No. HemaSync and its optional AI features support workflow; they do not replace a pathologist or other qualified healthcare professional. Cell identification, interpretation, follow-up testing, and clinical decisions remain with the professional responsible for the case. See the medical disclaimer.
Which count targets does HemaSync offer?
HemaSync offers 100-, 200-, and 500-cell targets, plus a free-count option. The user selects a target to suit the examination and laboratory workflow; the software does not recommend a clinically appropriate count size.
How do HemaSync AI credits work?
AI analysis uses credits. A free monthly allowance and paid credit top-ups are currently described in the product. Check the app for current allowance and purchase terms. Manual counting does not require AI credits.
Availability and privacy
Is HemaSync available on Android?
Yes. The HemaSync Android app is publicly available on Google Play.
Is HemaSync available on the Web?
Yes. The HemaSync Web App is publicly available in a browser. Visit the Web App information page for details.
Is HemaSync available on iOS?
Yes. HemaSync is available for iPhone and iPad on the Apple App Store. The device images on this site show interface previews.
How does HemaSync handle data and privacy?
The Privacy Policy describes HemaSync's data practices, and the account-deletion guide explains how to request deletion. Review those pages before using the product with patient or case information. For account or privacy questions, contact .