Shiftpunch is an offline work-hours and shift tracker for Android. The user punches in and out with one tap, records unpaid breaks, edits or adds shifts manually, and sees weekly and monthly totals together with an ESTIMATE of what those hours are worth, based on an hourly rate and pay multipliers the user enters themselves. It offers a calendar/list of past shifts, daily and weekly overtime thresholds, and optional night, weekend and public-holiday premiums. Pro features (Google Play subscription: weekly, monthly and yearly base plans, each with a free trial offer configured in Play) unlock multiple jobs, night/weekend/holiday premiums, deductions, advances, bonuses and tips, PDF timesheet export, CSV export, and JSON backup and restore. Everything runs on the device. There is no user account, no login, no server, no analytics SDK, no advertising SDK and no crash-reporting SDK. The app does not connect to any payroll system or employer, and it is not payroll or legal advice — the pay figures it shows are the user's own arithmetic, clearly labelled as estimates, and the app tells the user to check their own contract and payslip. Permissions: none beyond what Google Play Billing adds (INTERNET and ACCESS_NETWORK_STATE). No location, no camera, no contacts, no storage permission (files are shared through the Android share sheet).