HemocyTap

This app is perfect for cell culture experiments. It shows you perfect viability, total number of cells used, allows you to modify the dilution factor used and most importantly, count your cells based on distinct sound between live and dead. It has helped me a lot during my experiments. It also has different modes to plot the growth of your cells and save your work and export it. An amazing little app and well worth the money.

I’ve been using this app for a few years now. More so now. It is very simple, but has all the features. And the best thing is you can save your cell counts, and make different folders for them. Makes it easy to go back if you need to.

I use it to count algae cells. It works. Saves me a bit of time.

There seems to be a bug when calculating live cell density from total cell count and viability above a certain dilution. At 1:100 the live cell density is accurate. On the same count it is inaccurate at 1:500 and 1:1000. Love the app otherwise.

I downloaded this to use in cell culture as my lab is new and doesn't have a clicker. This is the best of the apps ive found as far as having a nice "click" sound and having a big button that makes it easy to count with while looking through the microscope (also tried zappy and invitrogen free apps). However, the lack of true customizability is irritating and caused me to plate 5 x more cells than I should have this weekend. The fact that you have to count all five squares to use the dilution calculator and it averages that is annoying. I want to count just one big square, the middle one, and have it give me the cell density based on that, not on some pre-selected sub-square. Please make the app so I can tell it exactly which squares I'm counting while I'm inside the counter, rather than hidden behind settings, and not even allowing for full customization.

Maybe this is brewer specific. I tried using it to count granulated leucocytes in a veterinary lab and it fell short. I could not make it register all 9 primary squares. It doesn't have an alarm (that I could find) to allert you when you've hit a specified number of cells, In my case I want to know when I've hit 100 without having to look up from the scope. I don't need the dead cell counter but it is usefull for counting the cells on the grid on the other side of the slide. I did find it a good alternative to give my thumb a rest from the standard counter.

If you are a brewer and counting yeast cells this app is now for you. The updates allow you to count the center square and is preset to calculate in that mode. This app not only makes cell counting easier by keeping track of your live and dead cells but does the calculations for you while storing your data and easily exporting it via an email attachment that opens in Excel. It also calculates final volume for a target density making pitching rate calculation a breeze. A word of caution: HemocyTap calculations assume you have made sample to diluent ratios, not sample to total. So for example if you make a 1:10 dilution by adding 1 ml of your sample to 9 ml of diluent you would set your dilution ratio to 1:9 the get the correct cells/ml count.

I use this to count yeast for brewing. I only use the center square for counting. I would love to be able to pick the little squares inside of that center square to track my counts. Overall th app works great and I prefer over a manual counter.

It needs to be a bit more customizable for what you count (e.g. able to count only one chamber) but then it will be AWESOME. I hope they make changes soon!