Follow these, https://docs.google.com/document/d/1PurfpFV6_ncXq-SvMKCF7_xBHKTWF10L1LqmHoSTUF4/edit#, instructions to create a sheet. The sheet that I used has 4 columns (Date, Step, Field, Notes) on a sheet called 'data', and one other sheet called fields where I put the slang name of our fields. Below is photos to better explain.

Now you have to create or log into your MIT App Inventor account, https://appinventor.mit.edu/. Then you either have to download the app file I have on this site or go to my project page, https://gallery.appinventor.mit.edu/?galleryid=d98420c1-e244-4317-a858-78d57e5b392e, on the MIT App Inventor and open my project up.

While going through step one you should have downloaded a JSON credential file that gives access to the sheet you created. You will need to load that file into the project as shown below.

At the top of the screen click build and then select APK. It should give a link and an option to use a QR code. 

Scan the QR code with your phone to download, and then click install (may need to temporarily allow installs on chrome).

Select the Date, then choose your 'step', then your field, add any notes, then click submit. All fields will be cleared, but it will have been entered into your google sheet. 

Hopefully soon it will be more thought out.