Based on my experience of raising capital and investing myself - If it is truly a for-profit business, you must have a business model already, which means if it is 100% free for (I assume) users, it must be sponsor-based (ads, sponsorships, etc). In order to raise money effectively & quickly, you need to show proof the business model is working. The more you show, the quicker you can raise. It's really important that you also show runway and (conservative) growth projections so investors can see how their money will impact your growth.

Totally open for a call if you have other questions.