Keep your customers coming back with a digital stamp card.
- Your customers collect stamps on their phone.
- They come back for their reward.
- You see who came and who stopped coming.
Ana Zegarra, in ArequipaPaul Sutcliffe, in Lima
Grella is a digital stamp-card loyalty platform for small businesses in Peru.
Customers who don't come back don't tell you.
They go to a competitor and you never find out. A paper card won't tell you either: it gets lost, stamped twice, and never says who it was.
How it works
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- Printed, on your counter
- One per location
- We set it up with you
Put your QR on the counter.
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- With their phone's camera
- Name, phone and email
- No app, one minute
Your customer scans it.
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- Your staff scan their QR
- One tap and done
- Logged with who gave it
One stamp per visit.
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- Card complete
- Reward at the counter
- And a new card begins
They redeem their reward.
For businesses that live on customers who come back.
- Cafés
- Bakeries
- Juice bars
- Ice cream shops
- Burger joints
- Chicken rotisseries
- Chifa restaurants
- Ceviche bars
- Shawarma shops
- Pizzerias
- Barbershops
- Beauty salons
- Nail salons
- Spas
- Laundromats
- Vet clinics
Your card
With your name, your colour and your reward. This is how your customers see it on their phone.
Panadería Ejemplo
You're at 5 of 8!
8 stamps
A free sweet bun

Barbería Demo
You're at 4 of 6!
6 stamps
A free haircut

Uñas Ejemplo
You're at 7 of 10!
10 stamps
A free manicure

Hamburguesería Ejemplo
You're at 9 of 10!
10 stamps
A free burger

What you gain
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Customers who come back
They come back for a reward you choose, not a discount that eats your margin.
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See who stopped coming
A list of who hasn't been back in over a month. You know who you're missing.
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How many come back, month by month
Sign-ups, stamps given, rewards redeemed and who came back. No spreadsheets.
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No one gets stamped twice
Every stamp is logged with who gave it and when. Reversing one is up to you, with a reason.
- To sign up
- 1min
- For your customer to download
- 0apps
- Free trial, no card
- 30days
Your next regular starts with one stamp.
Any questions?
Do my customers have to download an app?
No. They scan the QR with their phone's camera and their card opens in the browser. It works on any Android or iPhone.
What do I need to get started?
A phone with a camera at the counter to give stamps, and your printed QR. We set it up with you, at your business.
How much does it cost?
S/ 119 + IGV a month per location, with a 30-day free trial and no card. Each additional location costs half.
What data do you ask my customers for?
Only three things: name, phone and email. We don't use them for advertising or share them with other businesses.
Can I change the reward later?
Yes. Customers already collecting stamps finish their card under the rules they started with; the change applies from their next card.
Does it work if I have more than one location?
Yes. Each location has its own QR, and your customers collect stamps at any of them, on the same card.
Who's behind it
We're Ana Zegarra, in Arequipa, and Paul Sutcliffe, in Lima. We don't leave you alone with an app: we come to your business, set up the program with you and stay by your side.
- Ana Zegarra, general manager · Arequipa
- Paul Sutcliffe, technology · Lima