About this app
This app calculates the linear length of any material on a roll in feet or meters. The user simply inputs the material's thickness, roll diameter and core diameter. The linear length of the material is shown by clicking on either a US/Imperial or Metric calculate button. Note: The results are approximations, which could vary from actual roll lengths depending on winding tension, caliper uniformity and moisture content.
Latest release
What’s New
Compatibility with latest iOS version.
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 Aug 27, 2026 · 1:38 PM $0.99
Screenshots
