Halide devs launch new 'Spectre' app for capturing long exposure photography

This looks pretty cool, but I'm a bit confused as Live Photos on the iPhone offer this to some degree already. Swipe up and you get a choice of the following:

• Live (default)
• Loop
• Bounce
• Long Exposure

And of course you can edit and turn the live photo capability off anyway (and choose the still frame). I've used the Long Exposure option to great effect in the past and it both stabilizes and smooths out the scene very well. Perhaps Spectre is better for light trail effects.