Having experience of 20 years in wet lab I have thought that a handy tool for iPhone can be quite useful in the lab. So, I would like to present here the app for iPhone - BioLabCalculators. This app provides a set of useful calculators and converters for molecular biology. It also includes a colonies counter. The photo of a Petri dish can be directly taken by iPhone camera or imported from the iPhone photo library.

The provided calculators and converters are: Dilution calculator, Molarity calculator, Ligation calculator, SDS PAG calculator, Ammonium sulfate calculator, Bacteria growth calculator, Nucleic acid OD calculator, Nucleic acid amount converter, Protein amount converter.

In US App Store the app price is just 0.99$. - https://apps.apple.com/us/app/biolabcalculators/id1480948459?ls=1

The website for BioLabCalculators is here - https://molbiolinfo.home.blog/biolabcalculators-features/