*Update: Convert Excel spreadsheet to Mobile App

*Update:
Thanks to all developers for being in touch already.
Could you please revise your price and try to add a License key option to this App (i.e. new license needed every year) to use the App or whatever solution you think is appropriate to achieve this.
If you have not replied yet, please send me your quote ;)

Hi,
I would appreciate if you could send me an estimate for this job.
(Don't rely on price advertised since I had to put something in to post a Project)
I would need to turn an excel spreadsheet into a simple mobile app.
The App is to be used offline and installed directly as an APK (no need to upload on Google Play)
Spreadsheet is used as a Date & Time calculator
16 cells total / 8 to be interacted with / 1 Data Validation List on sheet2
Excel formulas are pretty simple
See attachment for App layout
(It would be nice to see a calendar & clock showing up when selecting Date & Time also a logo with built in image in App header)
Cheers