Quick and easy calculator to assist API 510/570 Inspectors in calculating Tmin, MAWP, corrosion Rates, and Remaining Life. The CORE Calculator App is designed to take common Inspection and Engineering calculations and make them available and accessible on your mobile device. The App is free and downloadable from the Apple App Store for iPhones and iPad devices.

This CORE Calculator App is provided by AsInt, Inc. "as is" and AsInt, Inc. makes no representations or warranties of any kind concerning the safety, suitability of the calculations for your purpose, an ​accuracy of your data, inaccuracies of user’s application or other misuses of this CORE Calculator App. AsInt, Inc. uses industry recognized codes and standards as the basis of all its software solutions. If you would like more information regarding a specific app, please submit a question via There are inherent dangers in the use of any software, and you are solely responsible for determining whether this CORE Calculator App is compatible with your equipment and whether the industry codes and standards used as the basis of this software are applicable in your jurisdiction. You are also solely responsible for the protection of your equipment and backup of your data, and AsInt, Inc. will not be liable for any damages you may suffer in connection with using this CORE Calculator App.

What’s New

Version 2.2

Improvement and bug fixes.

Ratings and Reviews

5.0 out of 5
11 Ratings

11 Ratings

James Burd ,

Great Tool

Functionality is great and provides most of the calcs needed on a frequent basis. Very convenient app to have on the go. Great job! 👍

Developer Response ,

Thanks! More to come!

API Insp ,

Must Have

Tons of quick reference material. Built in calculators are very useful. Every inspector should have this in their toolbox.

Brooks Firmin ,

Great User Friendly Tool

Awesome tool for quick needed action!


AsInt, Inc.
43.9 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© Copyright 2018 AsInt, Inc.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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