Develop a Barcode Scanner App (Android & IoS) plus a Windows application as server – using push IMAP function. - Quotation Request -- 2

Please provide your estimated total development price in EUR and estimated completion time for the historical software-development scenario below. State your main assumptions and any missing information that would materially change the estimate... (Budget: €250 - €750 EUR, Jobs: Android, C# Programming, Email Handling, Mobile App Development, Software Architecture)