Hi,Is there a way to be informed on Apple Watch side that the connection with the iPhone is lost?The idea is to notify User that he probably forgot to take his iPhone.Thx.

Hi,When adding a settings bundle to an Independent watchOS app, is-it expected to see the App name in the Settings app?In other word, is-it possible to manage settings thru Settings App in watchOS?Thx.

I've setup a scene with SceneKit where a ball is rolling on a plan. I've simulated the grass friction with applyForce() in order to make it stop after a while (dampen & friction parameters do not reach that effect). Everything works well till I play with runtime parameters, like scnScene.physicsWorld.timeStep, sceneView.preferredFramesPerSecond and scnScene.physicsWorld.speed. I did a comparison with default gravity. Let's take a plan, with a light slope and launch a ball on it: let planSlope = (Float.pi/180.0)*3.0 planNode.rotation = SCNVector4(x:0, y:0, z:1, w: planSlope) ... let impulse =  Float(ballMass) * speed // N.s = m*v let forceVector = simd_float3(1.0, 0.0, 0.0) let force = SCNVector3(forceVector * impulse) ballNode.physicsBody?.applyForce(force, asImpulse: true) The ball will climb the slope up till a certain distance and come back after. If I change timeStep, FPS or speed, the ball is still reaching the same point. That's great. Now, I disable gravity and create a custom force to simulate it using applyForce(): scnScene.physicsWorld.gravity = SCNVector3(0.0, 0.0, 0.0) func physicsWorld(_ physicsWorld: SCNPhysicsWorld, didUpdate physicsContact: SCNPhysicsContact) { ... let gravity = simd_float3(0.0, -9.8, 0.0) let mass = (ballNode.physicsBody?.mass)! let force = SCNVector3(gravity * Float(mass)) ballNode.physicsBody?.applyForce(force, asImpulse: false) This gives exactly the same good result with default constants: scnScene.physicsWorld.speed = 1.0 scnScene.physicsWorld.timeStep = 1.0/60.0 sceneView.preferredFramesPerSecond = 60 But as soon as I change one of them, the distance changes: scnScene.physicsWorld.speed = 2.0 scnScene.physicsWorld.timeStep = 1.0/120.0 sceneView.preferredFramesPerSecond = 30 So, I needed to take them into account on the force: func physicsWorld(_ physicsWorld: SCNPhysicsWorld, didUpdate physicsContact: SCNPhysicsContact) { ... let gravity = simd_float3(0.0, -9.8, 0.0) // Compensate timeStep & FPS & Speed !? gravity *= Float(scnScene.physicsWorld.timeStep)/(1.0/60.0) gravity *= (1.0/60.0)/(1.0/Float(sceneView.preferredFramesPerSecond)) gravity *= 1.0/Float(scnScene.physicsWorld.speed) let mass = (ballNode.physicsBody?.mass)! let force = SCNVector3(gravity * Float(mass)) ballNode.physicsBody?.applyForce(force, asImpulse: false) That's weird, I guess I missed something? The risk is that if FPS changes dynamically due to GPU overload, the result will differ.