iPhone Screenshots


The Laboratory Calculator is an utility to calculate various parameter:

- Mole Related Calculations:

Calculation of molarities
Conversion between gram and mole
Determination of dilutions from stock solutions
Conversion between ppm and molarity
Calculation of dilutions (c1v1=c2v2)
Conversions between amounts and masses or combinations thereof
Calculation of osmolarities

- Molecular Weight Calculations

Molecular weight calculator for chemical formulas including support for stable isotopes

- pH Calculations:

Calculation of pH's of acids or bases
Calculation of pH's of solutions of acids and bases
Titration Curves

- Centrifugation Related Calculations

Calculation of g-force, RPM and rotor diameter

What's New

Version 3.4

Bug Fixes

Customer Reviews



Awesome lab app for the student or professional!

Pro must mean 'Pro'totype


Buggy sliders, erroneous calculations, and only slightly useful:

The mole converter tells me that 2g of a 1Dalton compound = 2 mmoles (should be 2 moles)
Most of the sliders that let you switch units don't allow you to select anything besides yM/yL or M/L. The slider just snaps between those two extremes and you can't select anything in between.
The pH solution calculator probably works, but I wouldn't know because it's so difficult to figure out. I had to read the help document at the iSheepSoft site, and now I just wonder, Why would anyone need this? Maybe if you do a lot of novel buffer prep.
Several calculations allow you to solve for a particular variable (ie, G, radius, RPM). It took me a few tries to verify that the button I was pushing should've been labled "Solve for:" G, radius, RPM. This is unclear at the beginning.
The PPM converter doesn't help if you do volume/volume dilutions, only mass/mass is supported (though it has a nifty density correction feature!, so maybe you're supposed to back-calculate vol. from mass-density?)
The molarity calculator appears to work, but it's not the most user friendly implementation, and for this I can use iPhone's calculator (as I'm a professional chemist).

So it's only useful for centrifugation calculations and molarity, but I don't trust it now that I've seen it screw up a simple mole conversion.

Sigh. I'm useing an iPhone 3G. Is this not 3G compatible?

Comment to jeffspc88


As the developer I am sorry that you had such a bad experience. The problem with mole converter was caused by a wrong variable which was set when you did exit the program. The next time you did start the program kDa instead of Da was displayed (or vice versa). Therefore you get mmoles instead of moles. You can test it by yourself by shaking your device to clear all fields. When you now enter the values the correct solution will be displayed. I have submitted an update (1.8.1) to fix this problem. The update will also address the slider issue. In cases when the value was zero it was not possible to change the unit.
However thank you for your valuable feedback and I hope you give the program a second chance.


Harald Tammen
8.9 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German
Age Rating
Rated 4+


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