Johnatan56
Honorary Master
An app can more effectively utilize RAM though.An app cannot not increase hardware. That is just silly. That is like asking if there is an app that can fix your cracked screen. It maybe can free up Ram, but that is also silly as Android will automatically manage the memory. There is also a difference between RAM and Storage. You can add storage to the device if it can take an SD card. Installing more crapware will take more storage.
(as demonstrated by using the in-built browser and email app, though that's probably due to them running in the background anyways).
@Denno yours is also slow probably due to Tizen OS, sadly it doesn't seem like any dev ported LineageOS to your device to flash that on. https://wiki.lineageos.org/devices/
Once Trebble moves to low-end hardware, it's going to be quite interesting in the custom ROM field.
My personal experience has always been that Samsung devices lag, with the exception of about the S8 onwards as they finally got so much hardware performance that it can actually run that bloatware skin. I'm definitely making sure my next phone is one from the Android One program (stock Android).