S-Corp as an umbrella for multiple LLCs
I understand you would like to have each app in its own LLC for the purpose of limiting the liability to each app to itself. Also, I see some benefit in doing it this way if you want to sell the rights to those apps later on (in which case you would just sell its LLC).
Whether those benefits are worth the efforts and the cost of maintaining all those LLCs is another question. Generally, if you own all the apps with your holding company you would be able to sell the rights to them anyway (just as assets are sold). Also, depending on what type of apps those are, the liability might be minimal to justify the added level of business complexity. In other words, if you identify an app that could be "risky" you can organize it under its own LLC, while keeping the "low-risk" apps directly in your holding company.
Finally, if you are in California and plan to register there anyway you might want to skip the Wyoming step and just register a domestic CA LLC. Although there are many benefits in having a Wyoming LLC, you will be able to enjoy them anyway when you create WY LLCs for (some of) your apps. The management company would be just that ?? management company, located and registered in California.