Proton Wallet vs Sparrow Wallet Comparison

Each wallet has its own BIP39 phrase of 12 words. The phrase is not shown when the wallet is created; it is encrypted on your device and stored on Proton's servers, and you can display it later in the wallet's settings after entering your account password.

Creates BIP39 phrases of 12 to 24 words. It can also restore from SLIP39 shares, and it can hold no seed at all when the keys live on a hardware wallet.

The terms name Proton Financial AG, a Swiss company that is a wholly owned subsidiary of Proton AG, as the operator; the privacy policy gives its address in Baar, canton Zug. Proton says it discloses the limited user data it holds only on a binding request from competent Swiss authorities. Disputes with consumers outside the US go to the courts of the canton of Zug; US consumers face arbitration.

Sparrow is built by one developer, Craig Raw, who is based in South Africa. No company stands behind the project, and Sparrow runs no wallet servers of its own.

Proton Financial AG belongs to Proton AG, whose primary shareholder is the non-profit Proton Foundation; Proton says no change of control can happen without the Foundation's consent.

Built and maintained by a single developer since 2020, with code contributions from others. Sparrow is free and is funded by donations; it has no support team, only a community-run Telegram group.