How do I start a gym loyalty program?
You can start a gym loyalty program with Fideliya in one sitting: design your pass, set the reward, and print a QR code for the front desk. The result you are after is the January signup still showing up in March, with every visit counted toward something a member can see. Start by choosing what earns progress, such as check-ins toward a free personal training session. Then enroll members at signup, while the tour is happening and the phone is already out, because a member three weeks in is much harder to ask. Each member scans the desk QR code, fills in a short form with a name and an email, and the pass lands in Apple Wallet or Google Wallet. There is no app to download. Staff scan it at each visit from a browser. The Free plan costs €0 and issues a real wallet pass for up to 20 members at one location, with the QR scanner included.
A loyalty pass lands in Apple Wallet, the visit is stamped and the reward notification arrives on the phone.

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Related answers
Which loyalty program fits a gym?
A gym loyalty program should reward showing up, not spending. Here is the format that fits members who already pay monthly.
What keeps gym members coming back to a loyalty program?
What keeps gym members showing up: a reward they can see moving, and an early warning when a member goes quiet before they cancel.
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14 days free. No card. If your regulars don't join, you pay nothing.