Apps2SD has historically been one of the most used and useful tools in the Android arsenal. It not only allows users with limited internal storage to keep their apps installed, but is still even used today to allow users to keep their internal storage free and clear for things like music.
The method is pretty simple, and only requires a few steps. Most of the installation procedure involves commands from the Ace’s settings menu. Essentially, you are simply partitioning an SD card and installing an application–no big deal.
While APPS2SD certainly does take the load off the internal storage, the developer would like to note:
NOTE: Some widgets or applications that have widgets, don’t work while installed in the SD card. Those must be moved to the internal storage. The same thing applies to any themes you’re using, launcher, camera apps, or anything else you believe should be installed internally.
NOTE 2: Please also keep in mind that when you reboot your phone (or turn it on) anything installed in the SD won’t work until the phone is done scanning the SD card and confirms the item is installed.
As with other implementations of Apps2SD, make sure you move your widget apps back to the internal storage, and be patient when the phone reboots. Otherwise, everything is just peachy.
For those with the Galaxy Ace who want to give this a shot, you can find the full instructions and additional information in the original thread. Be sure to make a backup of your SD card contents before partitioning, just in case something goes wrong!_________