Probably the best available guide for Stories 2.
This app contains information on all released content for MHST2 up to the latest update in October 2021. It is an excellent compendium for the game's data, especially when searching elsewhere online often gives you irrelevant information pertaining to other Monster Hunter titles. As long as you have an internet connection, I highly recommend it.
To get this out of the way, I am a huge Monster Hunter fan, and the Stories games are such underappreciated titles in the franchise. I am very familiar with MHST2 and will assure you that everything you can explicitly see in the game is free to view in-app (i.e. monsties, genes, weapons, questlines, Elder's Lair), alongside a bingo builder. You only have to pay to view the attack patterns and drops of large monsters in lategame/title updates.
Buying the Full Version also gives you the supreme advantage of seeing gene probabilities per species. I highly encourage you to spend the money to buy the Full Version if you enjoy building your Monsties and want to know what egg species/scent is best for the gene(s) you want.
The app only has a few problems:
The English localization is messy in long strings of text, primarily during login/sign-up. This is circumvented otherwise as long as you have some knowledge about the game.
The app does not save bingo boards within the client. It does, however, allow you to export QR codes to your camera roll to edit/view your builds again.
Quest data only shows the target monster's location and not the location of the NPC that initiates the quest (if the quest is initiated by an NPC, and has a target monster).
Offline functionality is not supported.
If you have an available internet connection, this app is the best of its kind!
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