Can I purchase Voyant AdviserGo without a Voyant Adviser license?

Not yet.  Voyant AdviserGo is a complement to Voyant Adviser.  Many of the more detailed, in-depth and important planning elements that are embedded in Voyant Adviser are not currently supported  in Voyant AdviserGo. It is “horses for courses”: Adviser is likely to be the more appropriate tool for all but the most basic scenarios; AdviserGo is likely to work best for simpler, higher level planning scenarios. Voyant AdviserGo might work for 90% of your clients or it might work for only 10% of your clients.