Cartia

Digital loyalty card for greengrocers

Your customers stop by three times a week. You don’t know which ones.

At a greengrocer, the customer returns often but never spends the same twice. Points follow that reality; the stamp is only justified if you deliberately choose a very simple program. The QR code is presented at the register, when you hand back change.

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Free plan: up to 50 customers, no credit card.

Last updated October 23, 2026.

The short answer

What kind of loyalty program works for a greengrocer?

A greengrocer has a bakery’s frequency and a grocery store’s bags: hands are full. The paper card doesn’t come out. The card has to live in the phone, next to the bank card, and the scan has to fit in while the scale prints the receipt.

A stamp per visit works: people come often, for a similar basket. Give away something in season, not a whole basket — you know the ingredient cost every morning.

QR code at the register, not above the crates. Nothing to install.

The problem

No more wet stamped cards between the crates

Two or three times a week, bags already full. Nobody digs through a paper card. A QR code at the register, a stamp, a box of seasonal produce free — no app.

  • At the register

    Bags already full. The customer doesn’t have a free hand for a paper card. They do have a phone to pay with.

  • Twice a week

    The reward arrives fast. That’s the whole appeal at a greengrocer: the program runs itself.

  • For the shop

    You see who really makes your week, beyond the faces you already recognize.

  • The paper card

    A greengrocer has a bakery’s frequency and a grocery store’s bags: hands are full. The paper card doesn’t come out.

  • With Cartia

    Everything is centralized on mobile, next to the bank card. The scan fits in while the scale prints the receipt.

The recommended program

How many visits before the reward at a greengrocer?

Frequency is high: don’t be stingy with the threshold, be precise with the reward.

Eight visits at two a week = one month. Reward: a bunch or a punnet that costs you €1, not a €12 basket.

One rule, posted. No “except strawberries” exception: it gets argued at the counter and costs more than the discount.

Visits or points: which to choose

  • Stamps / visits

    Stamps, if you accept simplicity: one visit equals one stamp, whatever’s in the shopping bag. It’s defensible when the clientele is very regular and baskets are close.

  • Points on spend

    Points, as soon as Saturday’s bag weighs several times Tuesday’s. Spend becomes the only fair counter.

Points if you want the program to be fair; stamps if you want it to be immediate. Both are defensible here — it’s a choice, not a mistake.

A seasonal basket, not a discount by the pound

10 stamps (from €15). A basket of seasonal fruit or a bottle of craft pure juice, free.

What you can send next, from the Pro plan

Wallet alert when the first local strawberries or untreated citrus arrive.

  • First field tomatoesManual send · new arrival, whole customer list
  • Market close, Saturday 6 p.m.Scheduled send on Saturday at 5:30 p.m. · anti-waste
  • Just three visits leftSegment “Close to a reward” · 70% of the threshold reached

Segments and sends: Pro and Business plans

Setting up

Set up your loyalty card at your produce shop

  • Give away something in season

    A punnet of berries, a bunch of herbs, whatever you have extra that day — cost known the same morning.

  • Eight to ten visits

    At two visits a week, that’s a month. Visible, not overly generous.

  • QR code at the register

    During the receipt, not in the middle of the crates. Hands are already holding the bags.

  • Scan fast

    From Cartia Counter. Shorter than handing back change, otherwise the team drops the tool.

A validation that doesn’t slow down the weighing

  • At the counter

    The scan fits in while the receipt prints. No paper card left drying on the stall.

  • In the Wallet, not in an app

    The card sits next to the bank card, in Apple Wallet or Google Wallet. The customer scans the QR code, fills in a short form, and adds it — there is no app to install.

In your business, concretely

A routine business, with a basket that isn’t

The greengrocer combines two traits rarely found together: one of the highest visit frequencies in neighborhood retail, and one of the most variable baskets. People stop by after work for three tomatoes, and on Saturday morning for the whole week. That’s what makes the choice of counter interesting here, when it’s almost always settled in advance elsewhere.

The other specificity is the setup. Many greengrocers work partly at a market or with an open front, where the customer stops without going in. The QR code then has to live where the eye lands — on the stall, near the scale — and not on an inside counter that half the clientele never sees.

  1. While weighingThe QR code sits near the scale, at eye level. The customer scans it, fills in the short form and adds the card to their phone while you prepare the order.
  2. At paymentThey show their card, you scan it as you hand back change. The gesture fits within the time of checkout.
  • The weekday stopShort, frequent, small ticket. Here it’s frequency that creates loyalty, not the amount.
  • The Saturday stock-upMuch bigger, often the same customer. With points, they move forward in proportion to what they leave at the register.
  • Announcing a new arrivalFirst strawberries, last tomatoes: from Pro, you can alert your signed-up customers. No text message — a message you write and send.

The calculation

How many extra baskets would cover the subscription?

With the assumptions below — €16 basket, 40% gross margin — 5 extra visits per month would cover the monthly cost of the Pro plan.

Adjust my assumptions

If 10% of visits repeat one more time thanks to the card · €6.40 margin per basket

With these assumptions, the break-even point is

5 baskets / month

Beyond this threshold, the margin generated would cover the cost of the Pro plan. Formula: plan price ÷ (average basket × gross margin) = €29.90 ÷ €6.40.

  • +1,404baskets over the year
  • €1,872more revenue each month, with this assumption
  • €0.98per day for the Pro subscription
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Illustrative estimate, not a revenue promise. Starting assumptions at your produce shop: average basket €16, 40% gross margin, 26 days open per month. Cartia measures neither your revenue nor your return on investment: replace these values with your own.

Frequently asked questions

Replacing the paper card at your produce shop

How do I set up a loyalty card at a greengrocer?

You create the program, put the QR code at the register, and validate each visit from a phone. Your customers install nothing.

Won’t it slow down the register?

Scanning a card that already exists fits in while the receipt prints. Signing up happens on the customer’s phone.

Do my customers have to download an app?

No. They scan the QR code at the counter, join the program from their browser, then add their card to Apple Wallet or Google Wallet. No app to install.

How much does a loyalty card for a greengrocer cost?

Cartia is free up to 50 customers at one location, no credit card required. Beyond that, the Pro plan is €29.90/month, tax included, with unlimited customers and a 14-day free trial (credit card required to start it), with no setup fees and no per-volume billing.

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