I followed Boundary from its beginning through kickstarter and bought a system fairly soon after launch. I opted for the self-install (non-monitored service) which is straightforward, though needed to borrow a ladder to fit the outside siren! There have been a few initial teething problems but the Boundary staff are super quick to respond and resolve everything – in fact I’ve had responses to support emails within minutes and on weekends. I hope this level of service stays as the company grows – as I’ve been an early adopter for other systems (e.g. tado) where this has tailed off dramatically as they have grown. The actual alarm system and app are miles better than my previous alarm and most others I was looking at - that cost considerably more. Being able to control it via an app is useful and there are other useful features like monitoring movement (or lack of) in rooms during periods of time! If I had one negative, it would be the requirement to plug in the control unit to a mains socket. This requirement is limiting to where it can be located and a bit untidy having a trailing cable to a socket - thought that can be made to look reasonable with a bit of effort! It would be good if there was an option for a mains hard-wired unit. Overall for the money though, this is hard to beat and I would certainly recommend.