It is ok not great. Lack many features. If they make app they can bring in many features from other citation managers very simple way. But all the citation managers out there half cooked softwares and so is this one. It is just a very basic tool with no features. Mendekey is better, papers is good, endnote is good but all those are expensive and not free except mendeley. So if they want it for just a regular bare minimum use tool then it is ok but otherwise power users and more trouble free versions are as mentioned above however these paid softwares also lack serious features even after paid. So you can’t expect much from free versions. Also zotero design is not sleek clean. It looks very raw and clumsy. Which can be easily improved by better interface design.