KuaiJi

KuaiJi is a local-first ledger app focused on shared bill-splitting and personal expense tracking.

It supports both personal and shared ledgers: record daily expenses fast, manage categories and tags, and view clear monthly or yearly reports to understand your spending patterns.

For groups, it handles one-tap AA splits, “I treat / you treat,” or custom ratios — perfect for trips, parties, and roommates.

To protect privacy, KuaiJi runs entirely without servers. All data stays on your device. When sharing is needed, you can sync locally with others via Bluetooth or Wi-Fi, no account required — the same distributed concept used by Bitcoin. All connections are system-level encrypted.

It also offers CSV export, full backup and migration, Quick Actions and Shortcuts for instant entries, and supports English, French, and Chinese with light and dark appearances. Simple, reliable, and clean.