Concrete Calculator vs Overtime Tracker

Concrete Calculator helps you quickly estimate concrete volume and cost for slabs, walls, footings, columns, stairs, curbs, and other structures. Features: • Metric and Imperial units • Waste and cost estimates • Calculation history • Save and organize calculations into projects • Share calculation and project summaries Disclaimer: Results are estimates only and should not be used as the sole basis for purchasing materials or making construction decisions. Always verify measurements, calculations, and quantities with a qualified professional before use. We are very happy to serve you. If you have any requests, don't hesitate to contact us. - phannhatd@gmail.com

Overtime Tracker is a standalone personal work-hours log for anyone who wants to record overtime facts. It is available to the general public and does not require affiliation with a company or organization. Record start and end time, choose on-site, field, or remote mode, confirm a one-time location on a map with nearby places in range, then add your confirmation and up to four photos from the camera or library. Each record becomes part of an on-device SHA-256 chain, and edits leave an audit trail. Review durations and workload by day, week, or month. The app records facts and elapsed time only. It does not estimate wages, overtime pay, taxes, or legal outcomes. Your data stays local by default. The app has no ads and performs no remote analytics; data is not uploaded to a server. Export everything as JSON, create a monthly PDF summary, import and deduplicate records when you change devices, or delete local data at any time. Location is read once only when you record or explicitly refresh, never in the background. Uncertainty is shown honestly, and an unusual reading enters a confirmable state instead of marking failure. If you need to add a missed interval, use the same overtime form and choose the times yourself. Useful before your first entry, the home screen gives you one immediate way to start recording. Privacy Policy, Terms, and Support links are available in Settings and through the App Store listing.