Blood donors for Bangladesh
Post a request once. Dropli alerts matching donors within 3 km of the hospital, then 7, then 15, and keeps widening until every bag is confirmed. Families pay nothing. Donors are never paid.
A replay with made-up names. This is how the tracker behaves.
Why this exists
Right now someone in Dhaka is pasting the same post into six Facebook groups. Two strangers will reply asking for bKash money first. The donor who lives four streets from the hospital will never see it.
Donors were never the hard part. Getting the message to the right one, in time, was. Dropli does that one job.
How a request travels
Nobody gets spammed. Each ring only hears about a request if the ring before it didn't fill the bags, and only donors with a matching group who are able to give get the alert.
01 The request
Type or speak in Bangla. Dropli pulls out the blood group, the number of bags, the hospital, the date and how urgent it is. You check the form and post.
আমার আম্মার জন্য আগামীকাল বারডেম হাসপাতালে জরুরি ২ ব্যাগ বি পজিটিভ রক্ত লাগবে“My mother needs 2 bags of B+ at BIRDEM tomorrow, urgent.”
02 Ring one · 3 km
Only people with a compatible group, who haven't given in the last 90 days and live within 3 km of the hospital.
03 Ring two · 7 km
The next ring gets the push plus a message in their Dropli inbox. Your tracker counts down to the next ring, so you know something is happening.
04 Ring three · 15 km
Donors further out get an automated voice call on top of the push and chat. A phone call is hard to sleep through at 2 am.
05 Someone says yes
Each yes shows a name, a distance and an arrival time. The bag counter moves. Once every bag is covered, Dropli stops alerting people.
06 Still short
A wider SMS and voice-call round for ৳200 or ৳500. The money pays the phone bill for those messages. It never goes to a donor.
Start here
Five kinds of people use Dropli. Each page explains your side of it.
Post once, then watch donors answer on a live tracker.
02Alerts only when you're eligible and close by. Every donation lands on your passport.
03Verified requests, a donor supply map and a 30-day shortage forecast.
04Run blood camps, book donor slots and see where your team ranks.
05Scam warnings in chat, verified donations, and locations that stay private.
Pieces of the app, running
Bangla voice or text in, a checked request out. Nothing is posted until you confirm.
আমার আম্মার জন্য আগামীকাল বারডেম হাসপাতালে জরুরি ২ ব্যাগ বি পজিটিভ রক্ত লাগবে, বয়স ৬২
Ask for bKash "for transport" and both people see a warning before anyone pays.
The donor shows a code, the family types it in, and the donation counts.
No alerts until you're able to give again. The passport counts down.
Share to Messenger or WhatsApp. Donors can answer from the browser.
Circles are for regular transfusions, like thalassemia. Donors take turns, and the next one gets a reminder before the date.
The app
The old part
Blood banks have run on volunteers for as long as they've existed. What changed is the city around them: twenty million people, and no good way to reach the right ten. That's the part we work on.
Blood bank, Tokyo. US Army Signal Corps film, 1950. Public domain
For hospitals and blood banks
Verified institutions post requests that carry a badge, see how many eligible donors live nearby without seeing who they are, and get a warning before a group runs short.
Every active request with its dispatch ring, how many donors were alerted, opened it and said yes, and how many bags are still missing.
Rules we built into the app
These are written into how the app works, so nobody has to remember them.
Boost money pays for SMS and calls. Blood is given, never sold.
Requesters see a distance. Hospitals see counts per area, and small counts are hidden.
Messages asking for payment get a warning on both sides of the conversation.
A donation is only "verified" after the family enters the donor's six-digit code.
Quick reference
Dropli does this matching for you, but it helps to know. Pick a group. This is for red cell transfusions; your doctor has the final say.
| Group | Can give to | Can receive from |
|---|---|---|
| O- | O-, O+, A-, A+, B-, B+, AB-, AB+ | O- |
| O+ | O+, A+, B+, AB+ | O-, O+ |
| A- | A-, A+, AB-, AB+ | O-, A- |
| A+ | A+, AB+ | O-, O+, A-, A+ |
| B- | B-, B+, AB-, AB+ | O-, B- |
| B+ | B+, AB+ | O-, O+, B-, B+ |
| AB- | AB-, AB+ | O-, A-, B-, AB- |
| AB+ | AB+ | O-, O+, A-, A+, B-, B+, AB-, AB+ |
A patient who is B+ can take red cells from O−, O+, B−, B+.
Questions
Get the app
Sign up with your blood group and area. You'll only hear from Dropli when someone nearby needs exactly what you can give.
