Stempelbox: Bonus & Stempel

Alpcode

About this app

The stamp box replaces the paper stamp card. Stores issue stamps via QR code, and customers collect them on their mobile phones – no account, no registration, no server required.

HOW IT WORKS

1. The customer shows their QR code.

2. The store scans it and taps "+1 Stamp".

3. The customer scans the confirmation code – the stamp is added to their card.

Once the card is full, both parties immediately see: Reward unlocked!
... FOR BUSINESSES

• Create your own punch cards: 5 to 15 stamps, freely selectable rewards – for example, "10 haircuts = 1 free"

• Set stamp rules: every visit, minimum spend, or manually

• Customer list with search function and current punch balance

• Overview of cards, customers, and issued stamps

• Redeem rewards with a tap – the card resets to zero

• PIN protection for business mode

• Usable even without a camera: Select customers from the list or stamp using their customer number

FOR CUSTOMERS

• All punch cards in one app instead of your wallet

• Punch balance and progress at a glance

• Your personal QR code is always readily available

• No account, email address, or phone number required

FAKE-PROOF

Each stamp is digitally signed by the business (RSA-2048). The customer app verifies the signature directly on the device. A homemade or previously used code will be rejected.

YOUR DATA STAYS WITH YOU

• All data is stored only on your device

• No server, no user account, no advertising, no analytics services

• Works even in airplane mode

• Export backups as a file and restore them on a new device

GET STARTED FOR FREE
Included free: 1 punch card and up to 30 customers, with all basic features.

For larger businesses, there are optional one-time purchases – no subscription:

• PRO: unlimited punch cards and customers

• Whitelabel: custom card colors and no "Powered by Stampbox"

Ideal for hair salons, barbershops, cafes, bakeries, nail salons, and anyone who wants to reward their loyal customers.