Downloading Acid-Base Solutions 1.03 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Education Tools, more precisely Science. We recommend checking the downloaded files with any free antivirus. The actual developer of this free Mac application is University of Colorado.
From the developer:
Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength affect pH. Can a weak acid solution have the same pH as a strong acid solution?
You may want to check out more software for Mac, such as Solutions, Login & Awake Sound - The easy solution for playing music at log in and wake up or Canon Solution Menu EX, which might be similar to Acid-Base Solutions.
Science Tools
Science Tools