Ive spent a ton of time digging into the technical side of how these grocery apps sync up and honestly im very satisfied with how the Walmart ecosystem handles third-party integrations lately. If you are trying to stay under a hard $100 limit you need data that updates in real-time without any annoying lag or price discrepancies.

• Walmart Native App: This is your baseline. The inventory sync is pretty solid since it pulls directly from the local store database. I am happy with how the price tracking works for pickup orders and its definitely the most stable way to watch your total as you add items to the cart. No complaints on the UI speed either.
• Ibotta Integration: This is the real winner for your budget. You can link your Walmart account directly within the Ibotta app so you dont even have to scan paper receipts anymore. The API handshake between the two is reliable. Once you finish your pickup, the data flows over and your rebates are usually calculated within an hour. It works well if you want that cash back without the manual labor of taking photos.
• Fetch Rewards: Much more passive and less technical. You just scan the receipt after the fact. Its less about precision shopping and more about slow-burn rewards over months. Personally id use the Walmart app for the actual shopping cart to keep that $100 budget in check but definitely link your account to Ibotta in the settings first. The backend integration is seamless now and its basically free money for stuff you are already buying. Let me know if you have trouble finding the link settings...

I saw your post this morning and thought id chime in. Been using the Walmart ecosystem since they first launched pickup and it has definitely evolved. For years I tried the manual scanning route with Ibotta but the technical integration is way better now that they allow direct account linking. Basically you just link your Walmart credentials inside the Ibotta app. No scanning paper receipts required... the system just pulls your purchase history automatically about 24 hours after pickup. One technical hiccup I keep seeing is that some items wont register if the UPC changes slightly in the store system, so you gotta double-check the pending list sometimes. If you want something even lower maintenance, Fetch is a decent alternative. You just link your email or snap a photo. It pays less but requires zero brain power. TL;DR: Link your Walmart account directly in Ibotta for automatic cash back without the manual scanning headache.

Ugh, I'm so over the budget struggle too. I tried that Ibotta link and it was a total disaster, it missed my whole milk and bread rebates. So disappointing. Honestly, you're better off just grabbing Great Value staples like the 18-count eggs for under $3. At least those savings are guaranteed in the main app unlike those glitchy third-party rewards that never seem to work for me.