# Nubank’s early invitation loop

> Early customers traded invitations while Nubank’s reported waiting list reached 100,000.

- Owner: Nubank
- Kind: Product
- Sector: Finance
- Seed date: 2014-09-25
- Milestone date: 2015-06-02
- Date basis: Documented milestone; not a measured attention peak.
- Spread Score: 10 (Niche, provisional), v1.2
- Mechanics: Response chain, Scarcity drop, Press loop

## Summary

Nubank’s purple card spread through recommendations and invitations. Forum posts show real exchanges. Codes also came from Nubank’s website; applicants still submitted identity documents and passed credit review before receiving and activating a card.

## Timeline

- 2014-04-01 — Nubank (Open web) — Processed its first card transactions, according to the founders’ retrospective account.
- 2014-09-25 — Nubank (Open web) — Publicly launched its app-managed credit card.
- 2015-01-19 — Android Brasil participants (Open web) — Exchanged card invitations and compared whether referrals changed their waiting-list status.

The full timeline, metrics and sources are on the case page, or via the Pro API (https://howitspread.com/developers).

Canonical URL: https://howitspread.com/cases/nubank-invitation-launch

Cite as: How It Spread (2026). “Nubank’s early invitation loop.” Case HIS-01097. Spread Score v1.2: 10/100. Updated 2026-10-17. https://howitspread.com/id/HIS-01097