ChangeCase is described as 'Make changes to the case of text in block selections: uppercase, lowercase, first letter capitals, invert, sentence and title case'. There are three alternatives to ChangeCase for Google Drive - Sheets and Online / Web-based. The best alternative is Crop Sheet, which is free. Other great apps like ChangeCase are Remove Blank Rows (Free) and Power Tools for google sheets (Free).
Do you have Sheets that contain nagging blank rows or columns and it takes a lot of time to delete or hide them and not to mention the risk of accidentally deleting the wrong rows or columns? If you do, get this add-on to quickly get rid of them.