No, you haven’t. We (iPad Forums moderation team) have the forum’s rules in our signature. You’ll find it in my signature as well. It is added to every one of our posts automatically.
Welcome to iPad Forums, and enjoy your stay! I hope someone can answer your question.
Maybe this app is what you’re looking for:
Invoice & Time Tracking - Zoho by Zoho Corporation
Invoice & Time Tracking - Zoho on the App Store
It’s last update was 3 weeks ago, so it’s still supported by the developer.
Hope that helps.