This was a very simple and useful app for a long time until recently, when I started to receive a lot of annoying and unprofessional advertising on it. I don’t really mind ads in general, as I know they need to make money, but the way they are implementing advertising on TideCharts results in an unacceptable use experience. Two recent examples come to mind: (1) I received a survey invitation in TideCharts to weigh in on building the wall between the US and Mexico. The survey itself was strongly biased toward one particular point of view, and wasn’t really a scientific survey or poll intended to get true public sentiment, so I found it annoying to go through, knowing the results would not be used fairly. And (2) Today, I received an interstitial ad with uninitiated audio, which means that music started to play for an ad as I open TideCharts without any ability to control to stop it for a period of time. This is totally unacceptable advertising on any digital platform, except perhaps if you’re visiting a site or app where you expect uninitiated audio, like a movies review site/app. I am an expert in user experience, advertising online, and design, and I can tell you from years of experience and tons of data that this will make users extremely annoyed. It does not work as an effective form of advertising in the long run. Therefore, I am deleting TideCharts from my phone and seeking alternatives.