Kanbo Kanban Board

Kanbo is a kanban board for one person and one phone. Columns you name, cards you drag, and the part most mobile boards leave out: a work-in-progress limit on every column, shown on the header and enforced by saying something rather than by stopping you.

Go over the limit and the column turns amber and tells you by how much. Finish something and it goes back to normal. That is the whole discipline, and a board that hides it is just a list in three pieces.

WHAT IS INSIDE

• Board — your columns side by side, each with its count against its limit
• Column — one column in full, with every card and how long each has been there
• Cards — every card on the board, filtered by label, column or age
• Card — description, checklist, labels and where it sits
• Card history — every move this card has made, with the time it happened
• Labels — five of them, with how many cards each holds and where they sit
• Flow — a cumulative flow chart showing where work is piling up
• Cycle time — how long cards actually take, as a median with the spread
• Export — the board and its whole move log, as JSON

MEASURED, NOT ESTIMATED

Every time you move a card, Kanbo writes the moment it happened. Time in a column and total cycle time come from those timestamps, and a timestamp cannot be edited. The cumulative flow chart is drawn from the same log as the board itself, so the two can never tell you different stories.

Cycle time is reported as a median with the spread beside it, not as an average. One card that sat for three weeks will drag a mean well past what most cards actually took, and the app shows both figures and says which is which.

A card that has been in its column longer than that column's average is marked as aging. It is not hidden, moved or quietly dropped.

NO ACCOUNT, NO NETWORK, NO PERMISSIONS

A board carries what you are working on and what is going badly. Kanbo requests zero Android permissions and has no network code, so none of it can leave the phone. No sign-in, no subscription, no in-app purchase, no advertising.

WHAT IT WILL NOT DO

It will not share a board with your team, sync with Jira, Trello or GitHub, or notify you when something moves — all of that needs the internet, an account, or a notification permission. It will not attach files to a card, and it will not archive finished cards out of your numbers.

Six full-screen background themes are included under More. The interface is English throughout.

ASO Keywords:
kanban board, wip limit, cycle time, personal kanban, task board, offline kanban, cumulative flow, agile board, no account, no ads.

Release Notes 1.0:
First release. Columns with WIP limits, timed card moves, card history, labels, a cumulative flow chart, median cycle time, JSON export, and zero permissions.