I totally agree with your idea of sharing the login, honestly its the best way to go. Walmart doesnt have a native sync feature for two different accounts yet which is annoying, but sharing one login works well and keeps everything in one place. I've been doing this for our big party prep for ages and I'm super satisfied with how easy it is to track the budget. The only little thing I'd add is to make sure you both refresh the app before adding stuff so you're seeing the most current total. It’s way better than texting links... that just leads to buying two of everything lol. Seriously tho, sticking to one login is the way to stay under that $300 limit. No complaints from me since we started doing it that way. It really makes the whole process way smoother.