Runtime

The running app is the final editor. Runtime is where the blueprint’s assumptions meet the user’s reality: the actual frame sizes, the real data, the gestures that feel right or wrong under a real finger.

Inspect with intent. The runtime tools show the app’s state as it lives: the view hierarchy, the values in memory, the timing of frames. Use them to confirm what the blueprint predicted and to discover what it missed. Every inspection is a question asked of the running system.

Refine against feel, not just correctness. A native result is one that behaves the way the platform taught people to expect: transitions that track the finger, states that respond instantly, details that never draw attention to themselves. The final passes are small and numerous.

Know when the app is done. There is always another refinement; the craft is recognizing the point where changes stop improving the experience. Ship the app that feels native, and let the next version carry the rest.