I hope this message finds you well. I am writing to sincerely apologize for the delay in delivering the app as per our agreed-upon timeline. I understand the inconvenience this may have caused and I take full responsibility for the delay.
Due to unforeseen circumstances and unexpected technical challenges that arose during the development process, we encountered difficulties in meeting the original deadline. Despite our best efforts, we encountered unexpected obstacles that required additional time and resources to resolve.
Please rest assured that I have been working diligently to address these issues and make the necessary adjustments to ensure the app is of the highest quality upon its delivery. I understand the importance of this project and the impact it has on your objectives, and we are committed to delivering a product that meets and exceeds your expectations.
I understand that this delay has caused frustration and disappointment, and I want to assure you that we are taking this matter seriously. Our priority is to deliver a top-notch app that aligns with your requirements, even if it means sacrificing our initial timeline.
Thank you for your understanding and continued support.