About this app
Calculate how much rebar you need to reinforce a concrete slab. Enter the slab dimensions, desired rebar spacing and the spacing from the edge to quickly find how to lay out the rebar grid. Finds how many rebars you need to create a reinforcement in the slab. Inputs can be either imperial or metric with results shown to match. Results can be texted or emailed.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 16, 2026 · 12:40 AM $1.99
Screenshots
