Service Calendar Mobile App

I need a straightforward mobile app that lets me record, day by day, the procedures I perform in different places and automatically work out what each day is worth. Core workflow • I create a master list of “Procedures”. • I add “Place” and, while doing so, pick from those saved Procedures to say which ones I can do there and what their value is at that specific place (values may differ by place). Make each "Place" a diferent color. • On the calendar screen I tap any day and an "Add" button, choose the Place I worked at, and the app shows a small bar with that Place’s name and a list of all its Procedures. For every Procedure the screen shows its name, the preset value, and an empty field where I type how many times I did it. The total for that Procedure is then value × quantity. Storage & backup It is a single-user app that runs on one device, so everything can live locally in an on-device database. Once a day the data should back up automatically to my Google Drive; no manual button needed unless it simplifies implementation. Reports At any moment I can pick a Start and End date and the app adds up what each Place owes me in that range, displaying one total per Place. Platforms & tech notes • First priority is a polished Android build; if the overall cost allows, an identical iOS version can follow. • I am fine with standard stacks such as Kotlin + Room (or Jetpack DataStore) on Android and the Google Drive REST API for the backup job. • The interface can stay native and minimal—Material calendar widget or equivalent is fine—so long as entry is quick and totals are accurate. Deliverables - Production-ready Android APK (Play-Store-compliant) with source code - Daily automated Google Drive backup in place and documented - Brief README explaining database structure and how to restore from Drive - If budget permits: Xcode project delivering the same functionality on iOS Acceptance criteria 1. Entering a Procedure count instantly updates that day’s total (value × quantity). 2. Date-range report matches manual spreadsheet calculations. 3. Closing and reopening the app shows the last saved data without delay. 4. A fresh install restored from Drive reproduces all Places, Procedures, and history. If you have built similar offline-first apps or worked with Drive backups before, please mention it so I know we can hit these requirements smoothly.