I use smart bulbs around my house, with an Echo Dot. I bought this bulb in the knowledge that it wasn't compatible with Alexa. As a multi-coloured bulb, the colours are pretty good, setting up the app is extremely easy and I was very happy with it. The biggest down side was that it was ES fitment rather than bayonet, but that is fairly much the norm with Smart bulbs, so I had already got the new fitment. You can buy adaptors on Amazon if you need. At this point, the bulb would have got a 5 star rating.
As a speaker, this bulb performs perfectly well, if you take in to consideration that it's a bulb, containing a speaker. Again, it's easy to set up and use. The reason I scored it down? If you use a service like spotify, you can use it to stream music OR as a all singing, all dancing bulb, but not both together.... If you have music on your phone, it looks like you could do both together, or if you use one of the chinese [inbuilt] apps on the main app - provided you can read chinese.
Would I buy another? I would personally opt for an Alexa compatible model, but if that's not your thing..... YES, I would buy it.