One options set. Two factories. Apps that can sync.
Builder
Droid Builder is a prototype software factory that stamps Android apps from a shared template, metadata, and Groovy extenders.
template/ is the base Android framework. build/ holds reusable Java fragments declared in XML (APP_CODES, APP_FUNCS, APP_PROCS). An app-specific extender selects those fragments and applies them onto the template.
Think of a 3D printer: small pieces of code are fused onto the chassis to produce a working app. You do not design the car from scratch. You pick the options; the factory stamps the product.
Build scripts live in each generated app repo, not in this builder. A typical app script pulls Droid Builder, overlays template/ and build/, then runs DroidBuilder and an extender such as BookletExtender.
Source: Git repository
Related:
https://sw-builder.com/appstore/builders/
https://sw-builder.com/appstore/android/