CartHappy
Splits your grocery cart across stores, automatically
What this is
A browser extension that compares grocery prices across 10,000 stores, auto-applies coupons, and splits your cart to whichever stores are cheapest that week.
Our one-line summary — not the founder’s tagline.
- How it works
- Compares roughly 350 million prices a day across 10,000 stores, auto-applies coupons, and splits your grocery cart across whichever stores are cheapest that week; it can also learn your regular list and build your cart automatically.
- What's different
- Built as a browser extension so it works inside each retailer's own site rather than a separate app locked to one store.
- Best for
- Grocery shoppers who want the cheapest combination across multiple stores instead of deals from just one.
What we measured
Nobody else publishes this — it comes from knocking on the door every day.
- Watched by us
- 9 days
- Last checked
- 3d ago
Where it shows up
Every group here is a page of its own — each one checked daily.
The numbersIs it still shipping, is it overpriced, where did it land — and what the price is built from.
League price & chart
No money. No seat. It goes on your record — and in 28 days reality settles it.
Calls are closed while we rebuild accounts. You can still read every one of them.
AI. Launched 9d ago on Product Hunt, picking up 23 votes. Today, the site itself changed 6d ago — evidence it's still shipping, not just announcing.
Quiet for 5 days — no penalty yet, but quiet doesn't stay free.
We check this site every day, ourselves. A founder can post “still working on it” — a claim like that doesn't price. What we price is what we can verify from the outside: evidence, not announcements. The real question isn't “will this be huge?” — it's “will they still be moving in four weeks?”
The market viewHow this launch is priced and ranked in our league — the investor side of the page.
ranked by the reality anchor, not the market price
It launched on Product Hunt with 23 votes.
No matter how much money goes in. There is no pump here — you can't make yourself right by buying more. The line only moves on things that actually happened: an award, revenue that grew, a new platform, code that shipped — or silence.
1 quiet day in between are left out — nothing happened on them. A launch that goes quiet eases down a little at a time — never a cliff you could have run from the night before.
Daily tracking just started for this launch — the first point is on the board. A second reading lands with tomorrow's run, and the curve builds from there.
How the launch is moving on its own board, day by day — the crowd's attention.
A flat line is normal: votes stop within a day or two of launch, on every board. What's unusual — and what actually counts — is a launch that keeps pulling votes long after its day is over.
About
Most grocery apps show you deals inside one store. CartHappy compares 350M prices a day across 10,000 stores, auto-applies every coupon, and splits your cart to whatever's cheapest that week. It can also learn your regular list and build your cart automatically — WXYZ Detroit tested it live on TV, saving a family $28 instantly. We built ours as an extension because it works horizontally, sitting inside each retailer's environment while helping the shopper shop across stores, not locked into one.
Where it launched
1 platform| Platform | Votes | Counts toward price | Link |
|---|---|---|---|
| Product Hunt | 23 | sets the price | ↗ |
The board it did best on sets the price. Every other board only adds to it if the launch also placed high on that board too — because just showing up somewhere isn't an achievement. Listing on twelve directories is free; placing well on them isn't.
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