What is best way of marketing (promotion) your app, project ...!

Question

With lease expenditure as possible...!

Answer 1

I don't have much experience here, but maybe try showing your friends and family, and they cna leave reviews, or maybe they can tell one of their friends, untill it is popular enough to stand out from all the new unseen apps, so strangers will see it, download it, ect.

Answer 2

Email marketing and social media sharing can best help you to promote your product. First analysis and finding your target audience Email addresses. Email list must be a accurate and responsive. Try to include about your product advantages and how it is helpful to your targeted audience. If your email content is interesting for them then definitely read about your product.Main thing is best Email resources you have to find. Must read How to extract Email addresses from website https://infoviumwebscraping.com/business-email-scraper-email-extractor-scraping-emails/.
Another way is make blog and post regarding your product and share on social media network. Prepare video and share it on youtube and vimeo.