When comparing iMpulse controller vs 8bitdo SFC30, the Slant community recommends 8bitdo SFC30 for most people. In the question“What are the best third-party game controllers for Android?” 8bitdo SFC30 is ranked 6th while iMpulse controller is ranked 16th. The most important reason people chose 8bitdo SFC30 is:
This controller has exactly the same design as a Super Nintendo/Super Famicom controller.
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Pros
Pro Works great with emulators
The iMpulse works great with emulators in that the controls can be programmed from within the emulator application, thus creating no need for the iMpulse application.
Pro First party apps
There are three different apps for use on the iMpulse that add functionality to the device such as button mapping or a key finder.
Pro Rechargable battery
The iMpulse controller uses an in built rechargable battery that is charged through a USB port.
Pro Nostalgic design
This controller has exactly the same design as a Super Nintendo/Super Famicom controller.
Pro Light and portable
The 8bitdo SFC30 fits in your pocket easily. Dimensions are 61mm (2.4") tall, 144mm (5.66") wide, and 24mm (0.94") thick.
Cons
Con No analog sticks
Without the inclusion of analog sticks playing 3D games may be troublesome.
Con Apps do not work that great
There does seem to be a multitude of problems with the first party apps available for this device including a horrible UI and non working functions.
Con Has issues pairing
No matter which device you try to pair the controller with, it ends up losing the pairing, forcing the player to go through the pairing process frequently enough to be annoying.
Con No analog sticks
Only really useful for 2D games as there are no analog sticks.
Con Not ergonomically designed
There aren't any grips, and the button layout is designed to be functional instead of comfortable.