Who uses 'em and which one do you recommend (why)?
Advanced Nutrients has one for free. I use a spreadsheet on my desktop computer made by the free office suite Libre Office. I got a notice they (advanced) were upgrading it not to long ago with new features. Give it a try it’s free. But it is more of a nutrient tracker than a full grow log kinda thing…unless they drastically changed it from earlier versions.
Marty
I was looking into your topic and seeing what is available. Even though a bit old it has a nice variety of apps.
https://forum.growersnetwork.org/t/grow-buddy-software-app-grow-journal-software-free/
https://forum.growersnetwork.org/t/outdoor-growing-app-for-tracking-data
Oh thanks heaps Chris! Nice of you.