The phrase 'most complicated application' is correct and usable in written English.
You could use it in a sentence such as, "The most complicated application on the website required us to provide detailed information."
Studies on gear teeth contacts have been considered as one of the most complicated applications in tribology.
People think of Ebay as an auction site, and it is; but at heart it is nothing more than a honking piece of software, one of the most complicated applications ever created.
At a special hearing of the case, the national park convener, Linda McKay, said: "Without question, this has been the largest and most complicated planning application we have ever had to consider.
The most complicated part of the DBA application will be the declaration of your business's structure.
She adds, "The best applications are in the most complicated store environments, like big department stores that have a large number of different products that might be difficult to find.
Silicates are the most abundant and most complicated class of minerals on earth with tremendous technological applications in fields such catalysis, microelectronics, biomedicine, photonics, and traditional glass and ceramic industries [1].
Silicates are the most abundant and most complicated class of minerals on earth that have tremendous technological applications in fields such as catalysis, microelectronics, biomedicine, photonics, and traditional glass and ceramic industries [1].
Most, though, said that they had simply been too overwhelmed by grief and by the complicated application process.
This is both the easiest and most complicated approach: Ask a parent, trusted friend, or relative with good credit to co-sign the rental application with you.
Facebook's most complicated problem is privacy.
