About this app
STS Calculator is used to enter in left and right ear decibel levels to determine if an OSHA audiometric test has a Standard Threshold Shift or Possible OSHA Recordable.
Latest release
What’s New
This update from Apple will improve the functionality of this app. No new features are included. Updated with 64 bit support and larger iPhone screen sizes/
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 22, 2026 · 12:14 AM $0.99
Screenshots
