MHW Iceborne Field Guide is a database app detailing all monster part and elemental weaknesses for Monster Hunter World (base game) and Iceborne (expansion).
All weakneses have their appropriate hitzone values (HZV) in numbers, meaning it's much more accurate than the star rating system in-game or from other apps.
MHW Field Guide also features a search function which makes it easy to find what you are looking for.
This app is also dedicated to having up to date information for all future monsters in Monster Hunter World Iceborne. You won't find any missing monsters in this database!
So if you are a serious hunter, download the free MHW Field Guide app as your companion and analyse the monster's weaknesses before departing on your next hunt!