The best product you've found on PH

I am testing (really testing everything) one product on PH every day that seems interesting to me, in order to provide a valuable feedback to makers, but also to find less-known app. And you can really find magic apps, here are some products that I am using or keeping an eye on them: - https://www.producthunt.com/post... - great app to plan your holidays, you can rent a house (cheaper than AirBnb -- only houses available in Portugal for now), with a great feature, you can swap houses with another family to get free holidays! - https://www.producthunt.com/post... - basically a Twitter specialized in stock market, providing great insights, chat with people about stock market and follow their portfolio (there's only US stocks for now, from what I've seen) - https://www.producthunt.com/post... - Get news about stocks, crypto, forex commodities and economies. AI gets you resume of these articles to provide you the essential informations. Great tool to understand why a stock goes up or down and make informed information while investing. Feel free to share yours! If you have launched an app about holidays, finance world or fitness world, feel free to share, I'd love to test them! (not testing any kind of product since I do not have knowledge in every domain, I can test them but my feedback would be less valuable)