No company has ever thought about making an all round bathroom cleaner. All these companies are concerned about is there capital stream and they don't want to lose out on these streams by having a homemade bathroom cleaner made. The fact that there is no all round bathroom cleaner in the market means that we don't have any one single cleaner that looks after the cleaning of tubs, tiles and grout in the bathroom.
However, this does not hold you back from making your own concoction while doing the job, because there is nothing stopping you here. Most of the cleaners available in the market are made from very strong chemicals, so you would be better off making your own creation, because this will aid you better. Mixing baking soda, vinegar, lemon and water will give you the mixture you need and will be an all round bathroom cleaner.