Hemocytometer Sidekick5.0.6 - App Store

Make cell counting with a hemocytometer effortless!

You know the drill--time to count cells for your experiment. Get out the hemocytometer and squeaky mechanical counter, prepare your dilution, fill the chamber, then look under the scope and start pushing the lever. Get to the end of a square, write down the count, reset the counter, and repeat. Finally, try to remember the right calculation, then write down the result.

What if you didn't need the squeaky counter? The scrap paper? A manual calculator?

Sure, you *could* get an expensive, fancy cell counter with wasteful disposables. But why do that when a $5 app is nearly as good?

Hemocytometer Sidekick eliminates those annoyances. Record one or two counters for all samples with automatic calculations (including viability, blood counter), and use the full grid or the center square. Data is saved for you, so you can record it in your notebook at your convenience.

Hemocytometer Sidekick, designed from the ground up by a biologist, will make your life in the lab so much easier, that I'm giving you 10 measurements for free!

Features:
- Optimized for eyes-free operation (large buttons, sounds, vibration)
- Use both chambers and zoom in to inner grid
- Chamber types: Basic, Improved Neubauer, Bürker-Türk/Thoma, Fuchs-Rosenthal, Jessen, Spiers-Levy, Malassez, Makler
- One or two counters available, plus viability and blood (RBC, WBC, Platelet) counter
- Differential blood counter for many white blood cell types
- Pause and sound every 100 blood cells counted
- Automatic calculations
- Adjustable chamber depth
- Email results
- Prompt support

Version History Fixed several issues. 5.0.6 11/20/2025 Fixed several issues. 5.0.5 11/17/2025 Fixed issue where dialog box was blocking the app. 5.0.4 10/28/2025 Updated framework for improved reliability. Fixed several crashes. Reduced delay in starting measurement. 5.0.3 09/02/2025 Fixed several issues. 5.0.2 07/17/2025 Updated framework for improved reliability. Refreshed user experience. 5.0.1 04/19/2025 Updated framework for improved reliability. Refreshed user experience. 5.0.0 04/18/2025 Fixed several issues. 4.2.3 04/15/2024 Fixed several issues. 4.2.2 02/02/2024 Fixed several issues. 4.2.1 12/20/2023 Updated framework for improved reliability. 4.2.0 12/10/2023 Fixed issue with stuck counters 4.1.2 07/31/2023 Fixed issue with stuck counters 4.1.1 07/28/2023 Strengthened vibration when tapping, added compatibility with foldable devices, other fixes. 4.1.0 07/18/2023 Fixed several issues. 4.0.2 05/10/2023 Persistent dilution factor, total reported in results, fixed several issues. 4.0.1 03/14/2023 Updated framework, added Makler grid, blood cell counters can have custom ordering, customizable milestone for blood cells. Fixed pinch reliability. 4.0.0 02/06/2023 Bug fixes 3.2.1 08/12/2021 Bug fixes 3.2.0 03/04/2021 Fixed crash 3.1.1 12/16/2020 Option to sort Blood Differential by frequency. Added generic 3-counter hemocytometer mode. Dark theme support. Option to use English (US) instead of device language. Option to turn off sounds. Added Malassez grid layout. Corrected a calculation for BurkerTurk/Thoma inner squares. 3.1.0 11/30/2020 Fixed issue with Hemocytometer result updating when dilution factor and chamber depth changed. 3.0.6 09/07/2020 Option to display different units; fixed issue with calculating when using both inner and outer Hemocytometer grids; fixed issue with calculating Blood Differential counts. 3.0.5 09/04/2020 Fixed crash when resuming blood differential; disabled manual counter entry in hemocytometer briefly after counter incremented to avoid accidental keyboard appearance while counting. 3.0.4 08/30/2020 Fixed issue blocking use of inner grid in Viability mode. 3.0.3 08/27/2020