This Android app is able to find resistor value based on band colours.
Currently it only supports 4-bands resistors.
GNU General Public License v3.0
Permissions of this strong copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights.
See LICENSE for more info.