Always in the wallet — never uninstalled.
A classic loyalty app lives on a phone for around four months on average — then it's gone. The Mercurios Wallet card sits permanently in Apple and Google Wallet, surfaces at every checkout and is activated at the till in three taps.
76 %
existing members migrated within 14 days
5.8×
higher push click-rate vs. the old app
+21 %
repeat-purchase frequency per member
Instead of app fatigue a pass that's just there.
The old app had features — and friction. Login, forced updates, push permissions, storage space. The wallet card has none of that. It's there when the customer holds the phone to the terminal, and it's there when the phone vibrates.
The company
A premium fashion retailer with 5 stores across northern Germany, around 25,000 members in their classic loyalty programme. The old iOS/Android app had 12,000 downloads, but only about 4,200 monthly active users — and a 41 % uninstall rate within the first 120 days.
The challenge
Push campaigns reached less than a third of the programme. New members had to fill in a tablet at the till, scan a QR code, install an app and verify themselves — many dropped off right there. And on the shop floor customers regularly asked: "which card was that again?"
Our approach
We rebuilt the loyalty card as an Apple and Google Wallet pass. Existing members migrate via an emailed QR code, new members are onboarded at the till in under 15 seconds — one tap on the screen, one QR scan, done. Push messages are delivered straight through the wallet, geofenced to stores, and the card surfaces automatically every time the phone hits a payment terminal.
- Apple and Google Wallet card built with full store branding
- Migration of 25,000 existing members via personalised QR email
- Till onboarding under 15 seconds — no app install required
- Geofenced push: card vibrates the moment a customer enters the store
Rollout in practice
We went live over a weekend — migration ran automatically through a personalised email with a single "add card to wallet" button. Within 14 days, 76 % of existing members had migrated, many of them customers who had long since deleted the old app. The first push ("early access to the new winter season this week") went out two days later — store-visit conversion: 9.4 %.
What measurably changed.
Results after 90 days of full operation — measured against the last 90 days of the old app.
76 %
existing members migrated to wallet within 14 days
5.8×
higher push click-rate vs. the old app
+48 %
monthly active members after 90 days
+21 %
repeat-purchase frequency per active member
< 15 sec
till onboarding time (down from ~70 sec)
≈ 4×
brand moments per member — every Pay tap shows the card
„What surprised us: in the first two weeks three quarters of our existing members simply moved over — many of them customers whose app had been gone for months. And ever since, the card sits where we always wanted it: in the wallet, visible at every checkout, with no way for anyone to uninstall it."
Head of marketing
Premium fashion retailer · 5 stores
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