Developers Build Splitwise Alternative Where a Shareable Link Replaces User Accounts

A team has launched PeanutSplit, a free expense-splitting app that eliminates user registration by making the shared room URL serve as both the invite and the access credential. Each link is generated from 16 random bytes and acts as a bearer token, meaning whoever holds the link has full access, with no account recovery or owner override. The app handles currency amounts using strings and BigInt to avoid floating-point errors, locks exchange rates at the time of entry, and queues new expenses offline while requiring a connection for edits and settlements. Real-time updates are handled via server-sent events that notify clients of changes without transmitting any room data in the stream. The project is open-source under the AGPL license and serves as a top-of-funnel product for Peanut, a payments app, with a published stewardship document pledging no paywalls, nags, or feature gates.