BitStack

Bitstack is a French Bitcoin savings app that lets users automatically build bitcoin positions through everyday spending. Its core feature is round-up savings: when users link a bank card and make purchases, the app rounds each transaction up to the nearest euro and uses the difference to buy bitcoin. Users can also set up recurring buys (daily, weekly, or monthly) or make one-off purchases starting from €1. The app provides a euro account with a French IBAN and a Visa debit card that offers bitcoin cashback (up to 1% in satoshis) on purchases, credited in real time. Users can sell bitcoin back to euros or withdraw to an external wallet at any time. Bitstack is registered as a digital asset service provider with the French AMF, offering a regulated entry point for retail savers.

The main pain point Bitstack addresses is the high barrier to entry in traditional crypto investing: complex exchange interfaces, high minimum amounts, and the need for active management. By automating small, frequent purchases, Bitstack lowers the psychological and practical threshold, making bitcoin accumulation feel passive and effortless. Its competitive edge lies in combining automation, low minimums, and regulatory compliance, which has attracted over 300,000 active users who have saved more than €300 million in bitcoin.

In the past six months (February to August 2026), Bitstack launched its euro account with French IBANs and introduced the Bitcoin cashback Visa card in January 2026, entering beta testing with the first 5,000 waitlist users. The company also reported strong user growth, surpassing 300,000 active users and €300 million in total bitcoin savings, with revenue growing tenfold over two years. No major negative events were reported during this period.