Hello.app


hello.app was a peer-to-peer, decentralized storage platform based in Barcelona. Founded in 2022 by Álvaro Pintado and Alexander Baikalov at age 17, it was among the first to offer distributed storage on mobile devices, allowing users to monetize unused space via blockchain.
It aimed to replace centralized server infrastructure by using existing personal devices as nodes in a fragmented, distributed and encrypted network. In this model, phones, tablets, and laptops would collectively function as storage servers, contributing to a more resilient, worldwide system of data storage with no single point of control.

History

Conceived in 2021 when Pintado, 17, built the beta, hello.app launched publicly in January 2022. It gained 100,000 users across 200+ countries within three months and neared 200,000 active users by mid-2024.
In December 2023, El Confidencial reported an initial €300,000 raise and Pintado’s goal to rival Google and Amazon.
In September 2024, hello.app closed an €800,000 Series B at a €16 million valuation.

Business model

hello.app uses a sharing-economy model: users rent spare device storage and earn cryptocurrency. Pintado detailed how blockchain ensures data integrity in an Interempresas interview.

Funding

Pre-seed : €170,000 from IESE, Esade, Castiventures and Bcombinator; plus a €130,000 participatory loan from ENISA.Seed : €500,000 at a €16 million valuation.Crowdfunding : Target €2 million, with €300,000 on Seedrs.Series B : €800,000 at a €16 million valuation.

Domain acquisition

In October 2023, Pintado paid €107,000 for the domain, one of Spain’s largest domain purchases, before launching a €2 million funding round.

Controversies

In April 2025, an investor sued Pintado in Barcelona for alleged fraud, citing opaque fund usage and unmet valuation promises.