Play games
Earn rewards for levels and challenges in casual mobile games — for time you'd spend playing anyway.
Stack — the rewards app
Play games, answer paid surveys, scan receipts and connect your accounts. Cash out from €5 to PayPal — usually within 24 hours.

Payout sent
€5.00
Receipt scanned
+120 coins
Your multiplier
1.42x
Payout times depend on PayPal processing and account verification.
How it works
Free on iPhone and Android. Signing up takes about two minutes.
Play, answer, scan or connect — every activity adds coins, and your multiplier grows them.
Convert coins to real money and withdraw to PayPal. Payouts usually land within 24 hours.
Four ways to earn
Every stream feeds the same balance, and your multiplier applies to all of them.
Earn rewards for levels and challenges in casual mobile games — for time you'd spend playing anyway.
Share your opinion on real brands and products, and get paid for it.
Snap your printed shopping receipts and turn them into coins, every week.
Link Google, Amazon, TikTok, Instagram, Facebook, Gmail, Outlook or LinkedIn for an instant bonus and passive income that keeps working in the background.
The multiplier
Most rewards apps keep the biggest slice for themselves. Stack flips that: every coin you earn is multiplied, so you keep the largest share of what you make. Connect more sources and invite friends to push it higher.
Multipliers currently stack up to 4x.
At a 1.42x multiplier, every 100 coins you earn become 142.
Inside the app
Private by design
Anonymised insights from your data go to commerce and market-research firms — and your share of the value comes back to you. That's the whole business model. No ad targeting, no data resale behind your back.
Your name, contacts and identity are never part of what researchers see.
Each data source is a separate, explicit opt-in. Nothing is read without your consent.
Unlink any source at any time, straight from the app.
Stack is built by Datapods GmbH in Bonn and operates under European data-protection law.
Honest expectations
Stack won't replace your salary, and we won't pretend otherwise. It turns time you already spend — playing, shopping, scrolling — into real money on the side. How much depends on how active you are and how many sources you connect.
What we can promise: the cash-out floor is €5, not €50. Your first payout is reachable in your first week, not someday.
Yes. Stack is built by Datapods GmbH, a German company based in Bonn, and pays out real money via PayPal. The business model is transparent: anonymised market insights are sold to research firms, and you get a share of that value.
Once your balance reaches €5, you can withdraw to PayPal directly in the app. Payouts usually arrive within 24 hours.
Connected data is anonymised and aggregated into market-research insights — for example, which products people buy after seeing an ad. Researchers never see your name or identity, and you can disconnect any source at any time.
Google, Amazon, TikTok, Instagram, Facebook, Gmail, Outlook and LinkedIn. Each one is optional and adds to your multiplier.
That depends on your activity and your multiplier. Receipts and surveys add up steadily, games pay per challenge, and connected sources earn passively. Treat it as solid pocket money, not an income.
Your personal earnings factor. Every coin you earn is multiplied by it — connect more sources or invite friends and it grows, currently up to 4x.
No. The app is free, and there is nothing to buy. Stack earns its share from anonymised research insights, not from you.
Stack is available in Europe and speaks English, German, French, Italian, Polish and Czech. You cash out via PayPal; the minimum is €5 or the equivalent in your local currency.
Install Stack, connect what you're comfortable with, and cash out from €5.
Get Stack for freeScan with your phone to install