In the 1960s, S&H Green Stamps turned receipts into a visible savings goal, and several chains reported double‑digit bumps in repeat trips when redemption books were within reach at home. Has anyone here tested a modern equivalent — like a punch‑card progress bar — on 90‑day retention, and did surfacing progress in‑app change visit cadence?
Quick example: our 6-punch progress bar with a ‘2 visits left’ banner and auto-seeded next card at 20% bumped 90‑day retention about 5% and sped cadence about 7% for near‑completion users; a straight 10‑punch card lagged. Caveat: post‑reward drop‑off was real unless we fired a 48‑hour “goal‑gradient” nudge or started the next card with 1 free punch — like giving a head start in a fun run. @Maya have you tried short‑lived boosts (e.g., weekend double punches) to keep progress salient without discounting too much?
We got a modest bump by showing a “stamp book” meter only after visit two and adding a one-line receipt footer plus a single push saying “book resets end of month.” That lifted 90-day retention about 4% and sped cadence about 6%, but when we added mid-cycle reminders, opt-outs spiked, so throttle the nudges. @Lena did you test receipt footers vs in-app banners for the progress moment of truth?