GeoMark is described as 'can be used for finding your way to any point you have been, or want to go to'. There are three alternatives to GeoMark for iPhone, Online / Web-based, Android and Apple Watch. The best alternative is Mapstr, which is free. Other great apps like GeoMark are BeenThere (Paid) and Atlas Obscura (Free).
Meet your new travel buddy. BeenThere is the answer to questions like: - "What was that place called again?" - "What was the name of that nirvana-enducing cocktail I ordered?" - "What's their address?"