Bag

Bag is an Android application that pairs a Bitcoin price ticker with a holdings dashboard. It shows the current rate and lets the owner record how much bitcoin they hold, then converts that amount into a running net worth figure that updates as the price moves.

The app is built for local use. There is no sign-up step and no user account, so the recorded amounts stay on the device where they were entered, and it carries no advertising. UXAVIA publishes it under GPL-3.0-only, so the source can be read, modified and redistributed under those terms.

Its scope is deliberately narrow: it follows Bitcoin rather than a broad set of assets or currencies, and it is packaged for Android only. Anyone wanting a multi-asset portfolio tool, or the same view on a desktop or iOS, will need something else alongside it.