4 – Assured support
Being open-source, WooCommerce essentially relies on a network of goodwill supporters and developers who come up with their own support. This is perfect for people who absolutely look for the cheapest solution, but not for businesses that don't have the time to wade through forum topics or wait for their question to be answered.
Shopitag offers a commercial support model and, depending on the formula chosen, can be much more direct and immediate in answering support questions. In addition, there already is an FAQ database(LINK) anyway that's fixed in one spot, rather than spread out over several websites and developer forums.
5 – Immediate multi-language support
Shopitag pop-up shops can be made in English, Spanish, French, German and Dutch right away. This is interesting for multi-lingual regions or multinational businesses. WooCommerce can support multiple languages, too, but through additional plugins that require a cumulative amount of work.
This hassle is absent from Shopitag because the shop app has already been translated into four languages (with more on the way as our user base grows). In addition, it also supports multiple currencies, delivery costs and methods to help you sell in different countries and regions. No extra work required (well, except in your set-up, perhaps).