Bring a medium saucepan of water to a boil. Add corn and cook until just tender if using fresh (about 2 minutes), or until heated through if using frozen (about 1 minute). Drain. Cut of the cob.
Make the dressing: In a large bowl combine the soy sauce, honey, rice vinegar, sesame oil, and fresh lime. Whisk together; add the toasted sesame seeds and fresh ginger (option). Salt and pepper to taste.
Squeeze excess liquid from cucumber, apples, and carrots with your hands (or press in between paper towels) and discard.
Add vegetables and apples to the bowl with the dressing. Toss until well combined. Serve at room temperature or chilled.