The Spoke Tensioner has been updates. Fixes include removing the length ruler bug and resizing the info/help screen for the new iPhone 4 inch display.
Two new features have been added. Double sided viewing allows you to see the tension on both sides of a wheel at once. Hold down the "side" button to see this.
Also, manual entry allows you to enter a tension for a spoke. This is useful if you have acquired a different value from a manual tension meter (Park Tool) or you are just using this tool for storing wheels.
Hope everyone finds the updates useful.