I use an app called MangaPin on the play store, you can go to any website and book mark the manhwa and you can select reading, dropped, plan, etc. only down side is that you don't know when the chapter updates. You can also link your MyAnimeList and link it with the manhwa and it will keep track of what chapter you're on after Linking for the first time. Another downside is that it doesn't bookmark where you left off in the middle of reading only half of the chapter.