Get help with measurements, reviewed estimates, saved projects, reports, purchase restoration, and app behavior.
Concrete Calc is offline-first. Calculations and saved projects stay on your device unless you export or share them.
Weekly and annual subscriptions must still be active. Lifetime access remains available unless Apple reports that the transaction was revoked.
Apple manages billing and cancellation. On iPhone or iPad, open Settings → [your name] → Subscriptions → Concrete Estimator.
Saved projects are local to your device. Export important PDF reports before deleting the app, erasing the device, or moving to another device. Support cannot retrieve local projects.
Email the tool name, every input and unit, waste percentage, expected result, actual result, app version, and a screenshot. Remove client names, addresses, supplier details, and other confidential information.
Geometric volume is calculated from the dimensions entered. Order concrete also includes the waste or overage percentage you selected. This allowance is shown separately so it can be reviewed for actual site conditions.
Concrete orders are sensitive to unit, dimension, and assumption errors. The review step asks you to acknowledge each field and highlights edited values so the estimate is not treated as verified silently.
No. Concrete Calc does not provide structural design, engineering approval, or code compliance. Confirm strength, slump, exposure, reinforcement, placement, and other specifications with project documents, the supplier, and qualified professionals.
The app normalizes geometry using exact international definitions, including 1 inch = 0.0254 m and 1 foot = 0.3048 m. Calculations retain unrounded values; rounding is applied only for display.
These materials depend on manufacturer yield, coverage, density, dry-volume factor, compaction, and site conditions. Replace generic assumptions with the selected product’s published data and verify with the supplier.
Review every item, mix group, pour date, order quantity, supplier field, project note, and assumption. PDFs are project records, but they do not replace stamped plans, contracts, purchase orders, or professional review.
Include your device model, iOS or iPadOS version, Concrete Calc version, tool or project screen, exact steps, and a screenshot when useful. Do not send sensitive job or client data unless it is necessary.
Use the product page as the Marketing URL, this page as the Support URL, and the public Privacy Policy and Terms of Use as the legal URLs.
For the fastest response, include the tool, units, inputs, result, device, app version, and the steps that led to the issue.