Need a Chrome Web Store app Developer

I have android & iOS applications for child mathematics. I need to develop the same things into the chrome web store. One developer starts the work. He did already complete over 60% - 80%. But about some days he doesn't available as he was a part-time developer. Need a developer who can be complete the work soon. I need an urgent developer as the previous developer wastes time to complete the work.

Please check the apps from the app store :
https://play.google.com/store/apps/details?id=com.multiplication.quizzes.monitoring
https://apps.apple.com/us/app/multiplication-quiz-monitoring/id1574198901