Hi all! I just finished making this garden planning app (Android only) after learning how to program for fun. It's free and simple to use. I built it because I personally had a need for an app to layout my garden and make sure nothing combative was planted next to each other. Please check it out! Just search "Planter" on the Google Play Store.
If you have any suggestions or feature requests, please let me know! I want to make this app great for all gardeners like us to use.
Below: Green or red indicators show if nearby plants are companion or combative