Awesome!
I have worked with unity for 3+ years now, and as long as the graphics don't have to be fancy, I am confident I could manage the job. Also depending on what the app I would have to replicate, this will change how long it will take to deliver, however I am free most of the time as I study, so 7 days should be the upper limit. If the app is easier than I expected, I will reduce my price, as I am genuine and don't want to charge more you more than is necessary.
Hope to hear from you,
best regards,
Kamil