How do I securely save game & IAP's

I am having some trouble finding in-depth explanations on the save features of construct 2. I read alot about webstorage, but found out webstorage is no longer a thing.

My problem is this. I want to save the players in-game score, and save their IAP's. Essentially the IAP are going to be a premium currency which can be used to buy a new character. This premium currency can also be obtained through playing the game and watching an ad. I want to know how to securely save this value as I fear hacking could be somewhat easy using the local storage, but I am not entirely sure how it works.

Any input would be appreciated.

Well using local storage to save the progress will be local data on the device. As far as I know the stored data is encrypted so you won't be able to edit values or anything hacky. In-app purchases will be saved on the user's account for the relevant store.

Well using local storage to save the progress will be local data on the device. As far as I know the stored data is encrypted so you won't be able to edit values or anything hacky. In-app purchases will be saved on the user's account for the relevant store.

Thank you