Let's start with the premise that an investor is willing to invest "subject to mobile." Unless there is a term sheet that states this, what is far more likely is that an investor was pitched and declined to invest citing that they don't have a mobile offering. The entrepreneur likely said something along the lines of "well can we come back to you when we have a mobile offering?" and said "sure." In this scenario, there is no actual commitment or even high probability of closing an investment. So you want to start by clarifying what the actual commitment is - if any - since entrepreneurs can often misinterpret investor sentiment.

Although startup to startup mergers do occur, they have a high point of failure (failure to actually close the deal) because it's very difficult to value the two companies and without real resolve from both teams, it's difficult to establish which is worth what percentage of the merged entity.

All of this being said, it's really about what you want. Do you want to go it alone and build a big business behind your app, or would you prefer to be part of a team? Can you recruit a better team on your own than the one they already have?

If you are unsure of your desire to go it alone, and unsure of your ability to recruit a better team for your own startup, then you may wish to consider their offer, but I would caution you not to actually close the merger until after the money had been raised. Otherwise, you are at risk of assigning your work to this combined company and if it can't raise you're then stuck.

The good news is that it doesn't sound as though you have investors in your company so that actually reduces the complexity of the sale. You should really focus first on whether you love these people. Do you want to work with them everyday for the next 5-7 years? Get there first, and then consider everything else I've said.

I'm happy to discuss this in more detail with you in a call.

Best of luck!

Can't help you with the "fit" question. That is really something you are going to have to decide. The best thing you can do is spend time with the founder and folks you would be working with. See if your visions align and if you actually want to work together.

From a logistics standpoint, deals that stage are usually pretty simple. If you are a solo and have no assets (other than the code/app) the deal could happen pretty quickly/easily. Likely you'll just be negotiating on salary + equity. You will do a simple asset purchase agreement to get all of your code/assets into the new company.

If you don't have any investors or employees this should be pretty simple.

The one thing I'd be careful of is this contingent investment. It sounds a little precarious to me. If the investor is concerned about a mobile strategy, and their solution is just to "hire" or "acquire" you, that will likely be a red flag. I'd make sure the deal makes sense for you with or without this investor. The last thing you'd want to do is make a deal and then have that new company go under because they can't raise cash.

Regardless if you decide to move forward or not, I would highly recommend you approach it like finding a co-founder.

It sounds like he wants you to stay on after the fact, so your future liquidity (and employment) is going to be dependent on him.

So, be sure to ask yourself
- Do I know him well enough to make that kind of decision? If not, spend time with them.
- Do you trust them? Listen to your gut.
- Will they teach you things? Do they inspire you ?

If any of these are no, then dont even bother.

The most likely outcome is failure, so ensuring the journey is done with people you actually want to spend time with and trust is paramount to anything else (price, etc)

Open to a call if you need to discuss.