Having crafted over 100 websites and 50+ applications, I have the skills and experience you need to bring your Instagram Group Chat Web App to life. As a proficient MERN stack developer, I've tackled various challenges in social media app development just like yours before. Additionally, my background in creating user-centered designs will ensure the app's clean user interface matches your vision perfectly. You don't have to worry about the backend either; I can seamlessly integrate Razorpay for any potential transactions.
Furthermore, my experience with Google AdSense can help monetize your web app effectively while keeping it user-friendly and non-intrusive. The use of hilarious ads on Instagram has always attracted immense positive feedback and I'm sure we can implement this brilliantly to keep users engaged with the platform. Importantly, I've used my knowledge on secure sign-up using platforms like Google that will ensure users' trust in this application is undisputed.
Overall, my proficiency in the MERN stack, ability to handle ad networks and payment gateways, and create secure sign-ups combined with my passion for intuitive design make me an ideal fit for your project. So what do you think? Ready to take our Instagram Group Chat Web App off the sketchpad and into the realm of reality!