Calculate concrete, rebar, and other construction material needs and costs offline. Get precise measurements in feet-inches or metric, with options for bag counts, ready-mix, and tonnage. Generate professional quotes for clients or suppliers.
1.4.1
September 7, 2026
Fixed the blank Share Quote screen, added asphalt tonnage to results, quotes and project totals, long quotes now export as a complete multi-page PDF, and you can edit a saved item's numbers instead of deleting and re-entering it. Rebar spacing now requires a valid entry so a blank field can never round to a near-zero spacing. Small stability fixes throughout.
More$4.99
Slab Pro
Unlock all materials. Paid once, owned forever.
No, Slab is completely ad-free. The app emphasizes a distraction-free experience for users on the jobsite.
Slab is free to try with unlimited calculations for concrete and gravel. To unlock all features like other material types, cost quotes, and project saving, a one-time unlock purchase is required.
Slab has an age rating of 4+, making it suitable for a wide range of users. This indicates it contains no mature content.
Slab was last updated on July 18, 2026, indicating a recent focus on maintenance and potential improvements. The latest version is 1.1.
Yes, Slab is designed to work fully offline, even in airplane mode or areas with no signal. This ensures you can calculate materials on any jobsite.
Currently, Slab is supported on iPhones. Future compatibility with other devices may be considered based on user demand.
Users appreciate Slab's ability to provide accurate material quantities and cost estimates offline, directly on the jobsite. The clear, legible results and professional quote generation are also highly valued.
No, Slab does not require an account or sign-up. Your projects are stored locally on your device, and your data is not collected.
