Receipt #007
Fetch
Passive receipt cashback across retailers.
- Reward source · Receipt-scanning, broad partners
- Daily ritual · No
- Receipts · Yes (core feature)
- All US states · Yes
- Stacking · Single currency (Fetch Points)
Matchup · Cashback apps
Fetch wins on retail breadth. Ibotta wins on grocery. Upside wins on gas. Where ZKPuzzle is structurally different — shops paying you directly through a daily-game habit — and where it isn’t.
Honest verdicts. Disclosure: we run ZKPuzzle.
Receipt #001
You’re probably here because you use one of the big cashback apps and you’re wondering if ZKPuzzle is worth adding to (or replacing it in) your stack.
Read the four-year arc in the anchor post, or jump straight to /research.
03
Earn a percentage back on spend you were already going to do. Receipt-scanning, partner-brand integration, or bank-linked passive earnings.
Quick score
Receipt #007
Passive receipt cashback across retailers.
Receipt #008
Grocery cashback specifically.
Receipt #009
Gas + grocery cashback.
Receipt #010
Partner-brand cashback (loyal-shopper users).
Receipt #011
Bank-account-linked passive earnings.
The contender · Receipt #001
Daily habit + multi-category direct rewards.
01
The short version
Mainstream cashback apps are receipt-scanning or partner-brand cashback at their core. ZKPuzzle is structurally different: shops, marketers, and users upload gift cards and giveaways directly through the ZKPuzzle apps (the consumer app, ZKPuzzle for Business, and ZKPuzzle Capital), and verified humans (ZK proof of human) earn them through a daily-game habit + group chat layer. Different model, different engagement loop. Important to flag upfront: ZKPuzzle doesn’t currently offer receipt logging or survey-based quests — if those are your primary use cases, the cashback apps below are the right tools. If you want cashback on what you already buy, Fetch / Ibotta / Upside still win in their categories. If you want shops paying you directly through a daily-habit app, ZKPuzzle. Most users will run a stack of 2–3.
02
About each
Fetch. The cashback giant. Tens of millions of users, tens of thousands of retail partners. Receipt-scanning UX is the most refined in the category. If you already shop and want passive cashback on receipts you’d throw away, Fetch is the default answer. Honest concession: Fetch’s retail partner count is multiple orders of magnitude bigger than ours today.
Ibotta. Grocery-cashback specialist, now publicly traded. Tight grocery integrations (in-store rebates, chain-specific offers). If grocery is most of your spend, Ibotta is built for you. Honest concession: Ibotta’s grocery-specific UX maturity is unmatched in our category.
Drop. Partner-brand cashback. Drop’s power-up boosts on specific brands you frequent are real value if your spend skews to a small set of major brands. Honest concession: Drop has nearly a decade of refined partner-brand integration we don’t.
Upside. Cashback on gas and groceries with location-aware offers — drive past a participating gas station and your app pings you. Strong unit economics in their categories. Honest concession: for gas specifically, Upside is the obvious pick.
Pogo. Cashback layer that integrates with bank accounts and rewards everyday spend, plus survey-based earnings. Lighter-touch UX. Honest concession: Pogo’s bank-account integration creates a frictionless earnings layer that’s harder to set up in our model.
03
About ZKPuzzle
ZKPuzzle is a daily-game app where shops, marketers, and users upload gift cards and giveaways directly through the ZKPuzzle apps (the consumer app, ZKPuzzle for Business, and ZKPuzzle Capital), and verified humans (ZK proof of human) earn them through daily play. The core model is structurally different from receipt-scanning or partner-brand cashback: rewards flow directly to verified users, and the platform makes money from user subscriptions (ZKPuzzle Pro, $5.99/mo) — not from ad spend or partner fees. Important to flag: ZKPuzzle doesn’t currently offer receipt logging or survey-based quests — if those are your primary use cases, the cashback apps above are the right tools.
Where we have parity with the cashback apps: trial-app quests. Fetch has app-trial offers (try a partner app, hit a milestone, earn). Pogo has its offer wall. ZKPuzzle runs the same kind of trial-app quest mechanic. The structural difference is in the reward stack. On Fetch a completed trial-app quest pays Fetch Points; on Pogo it pays cash; on Drop it pays Drop points. On ZKPuzzle the same quest pays cashback plus ZKPuzzle Points + Shop Points + Store Points — four reward streams stacked per action. The same stacking applies to gift-card uploads, content creation, and referrals. Compared to single-currency competitor quests, ZKPuzzle users typically see roughly 2–4× the value per completed action.
What ZKPuzzle adds that the cashback apps don’t have at all: a daily-engagement loop (group chat + daily challenge); rewards that aren’t conditional on you having already spent at a partner store; real ownership in the network you help grow, captured at three levels (the ZKPuzzle network, the shops ecosystem, and individual stores) — like if Uber drivers held Uber shares or DoorDashers held stake in restaurants they delivered for; walk-to-earn for stepping outside; quests rewarding referrals, content creation, and gift-card uploads on top of the trial-app quests above.
We’ve been at this four years (Nucleo 2022 → ZKPuzzle 2023 → ZKPuzzle 2026). The ZKPuzzle Arcade has been the highest-volume zero-knowledge application in the world after Worldcoin since Aleo mainnet launched in September 2024. Full arc on the blog; receipts on /research.
Honest concession: our retail-partner count is multiple orders of magnitude smaller than Fetch’s today. We’re growing through Q2 2026 GTM, and the partner gap will close — but if you want passive cashback on receipts-from-anywhere right now, Fetch / Ibotta / Drop / Upside / Pogo will give you more transaction coverage.
04
When each fits
When the cashback apps are the better fit:
When ZKPuzzle is the better fit:
Honest concessions
The moments where another app is the right tool for the job.
Where they win — Fetch
If receipt-scanning is your primary earning path, Fetch is the better tool — they have tens of thousands of retail partners and a refined receipt-scan UX.
Where they win — Ibotta
Most of your spend is grocery? Ibotta. The deepest grocery cashback channel in the category, with 1500+ retail partners and grocery-specific specialization.
Where they win — Upside
You drive a lot — gas matters. Upside is the gas-cashback leader (gas + grocery with location offers).
Where they win — Pogo
For paid surveys, Pogo has the deeper offering. Bank-linked passive cashback + surveys is their core feature.
Where they win — Drop
Brand-loyal to Drop's partners? Drop has nearly a decade of refined partner-brand integration we don't.
Frequently asked
Stack ZKPuzzle on top
Most users in this category run 2–3 apps. Adding ZKPuzzle to your existing Fetch / Ibotta / Upside stack gives you a daily-engagement layer + direct rewards + verified humans on top of the transactional cashback your other apps cover.