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CashbackStacker
Stack portals, cards & coupons to maximize every purchase
Most people use a cashback portal OR their credit card rewards. Almost nobody does both at once - and that's leaving 5-15% on the table every purchase. CashbackStacker shows you the exact combination: which portal is paying the most for your store today, which of your cards to use on top, and any active coupons. Takes 30 seconds. Free, no account needed. Rates update daily.
Hey Product Hunt! 👋
I built this after realizing I'd been leaving serious money on the table for years.
Had a Rakuten account, had good credit cards — but was never using them together
strategically.
The problem: cashback portal rates change daily, and the best portal for Nike today
might not be the best tomorrow. On top of that, different cards give bonus % at
different stores. Figuring out the optimal combo manually meant opening 4-5 tabs
every time.
So I built a calculator. Pick your cards, pick a store, enter the amount — it shows
you which portal is paying the most right now and which card to stack on top.
Completely free, no account needed. Rates update automatically every day.
Would love feedback from heavy portal users — definitely still missing some edge
cases and card combinations. What would make this more useful for you?
About CashbackStacker on Product Hunt
“Stack portals, cards & coupons to maximize every purchase”
CashbackStacker was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #123 on the daily leaderboard. Most people use a cashback portal OR their credit card rewards. Almost nobody does both at once - and that's leaving 5-15% on the table every purchase. CashbackStacker shows you the exact combination: which portal is paying the most for your store today, which of your cards to use on top, and any active coupons. Takes 30 seconds. Free, no account needed. Rates update daily.
On the analytics side, CashbackStacker competes within Productivity, Fintech and Personal Finance — topics that collectively have 703.6k followers on Product Hunt. The dashboard above tracks how CashbackStacker performed against the three products that launched closest to it on the same day.
Who hunted CashbackStacker?
CashbackStacker was hunted by Stanislav Shevchenko. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of CashbackStacker including community comment highlights and product details, visit the product overview.
Stanislav Shevchenko