# CORE Calculator App

> Asset integrity calculator for oil and gas inspectors. (iPhone/iPad app by AsInt Inc..)

- Source: https://appshunter.io/ios/app/core-calculator-app/id1447118499 (this page in markdown: same URL + `.md`)
- Developer: [AsInt Inc.](https://appshunter.io/developer/1438397626)
- Category: Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 11 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 148 MB
- Languages: American English
- Released: 2019-01-20
- Data updated: 2026-07-23
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/core-calculator-app/id1447118499/reviews.md

## What is CORE Calculator App?

AsInt delivers asset integrity solutions globally within the Oil and Gas Upstream, Midstream, Downstream, and Petrochemical industries. With our CORE Calculator mobile app, you have quick and easy calculator to assist API 510/570 Inspectors in calculating Tmin, MAWP, Corrosion Rates, Remaining life, etc. We use industry recognized codes and standards as the basis of all our software solutions. The app is designed to take common inspection and engineering calculations and make them available and accessible on your mobile device. 
 
Here are a few things that you can do from this mobile app:
- Access comprehensive and updated information on construction materials.
- Perform precise calculations based on operating details.
- Identify probable damage mechanisms.
- Determine remaining life based on thickness data.
- Calculate corrosion rates with precision.
- Seamless assessment of damage susceptibilities.
and much more. Get started NOW!
 
This CORE Calculator app is provided by AsInt, Inc. "AS IS" and AsInt takes no responsibilities or warranties of any kind concerning the safety, suitability of the calculations for your purpose, accuracy of your data, inaccuracies of user's application, or any other misuse of this application. There are inherent dangers in the use of any software, and you are solely responsible for determining the compatibility of this application with your equipment. Ensure that the industry codes and standards used as the basis of this application are applicable in your jurisdiction. 

We are committed to protecting and respecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our CORE Calculator mobile application.

We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page. You are advised to review this Privacy Policy periodically for any changes. Changes to this Privacy Policy are effective when they are posted on this page.

By using the CORE Calculator mobile application, you agree to our terms and conditions stating Acceptance of Terms, Use of the App, Prohibited Uses, Disclaimer of Warranties, etc. For more information on Privacy Policy : https://asint.online/privacy-policy and Terms of Use : https://asint.net/mobiletermandconditions/
 
Contact us :  info@asint.net

## Key features

- Tmin calculations
- MAWP calculations
- Corrosion rate calculations
- Remaining life determination
- Construction material information
- Damage mechanism identification

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Damage Mech Screener | $9.99 | per month |
| Materials Lookup | $4.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Materials Lookup | $5.99 | one-time |


## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/core-calculator-app/id1447118499/reviews.md

### 5/5 — Great User Friendly Tool

*2019-01-31*

Awesome tool for quick needed action!

### 5/5 — Great Tool

*2019-01-25*

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!

### 5/5 — Inspector tool

*2019-01-25*

This is a must have reference/calculation tool for every API and RBI Inspector out there.

### 5/5 — Must Have

*2019-01-23*

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

## Frequently asked questions about CORE Calculator App

### What is CORE Calculator App used for?

CORE Calculator App is designed to assist API 510/570 Inspectors in the oil and gas industry with critical calculations such as Tmin, MAWP, corrosion rates, and remaining life, based on industry-recognized codes and standards.

### What calculations can I perform with CORE Calculator App?

You can perform calculations for Tmin, MAWP, corrosion rates, remaining life based on thickness data, identify probable damage mechanisms, and assess damage susceptibilities. It also provides access to information on construction materials.

### Is CORE Calculator App free to use?

The CORE Calculator App is free to download and use for its core functionalities. However, it offers optional subscription plans for 'Materials Lookup' at $4.99/month and 'Damage Mech Screener' at $9.99/month.

### What devices is CORE Calculator App compatible with?

CORE Calculator App is compatible with iPhone, iPad, and iPod devices, running on iOS.

### How often is CORE Calculator App updated?

The app was last updated on March 17, 2026, with version 4.0.1. While specific update frequency isn't detailed, this indicates ongoing development and maintenance.

### What is the age rating for CORE Calculator App?

CORE Calculator App has an age rating of 4+, making it suitable for a wide range of users.

### Does CORE Calculator App have ads?

No, CORE Calculator App does not contain advertisements. The app is free to download and use, with optional in-app purchases for enhanced features.

### Where can I find the privacy policy and terms of use for CORE Calculator App?

You can find the Privacy Policy at https://asint.online/privacy-policy and the Terms of Use at https://asint.net/mobiletermandconditions/. These documents detail how your information is handled and the terms of app usage.

## Version history (last 5 releases)

### 4.1.0 — 2026-07-17

What's New
- Gamification-based free trial
- Calculation improvements
- Performance improvements
- General bug fixes

### 4.0.1 — 2026-03-17

Faster, smoother, and more reliable, built for calculations anywhere. 
- Enhanced UI for a smoother experience. 
- Clear visuals for easier understanding of calculations. 
- Calculations updated to align with the latest industry standards. 
- Fixed minor issues affecting calculation stability. 
- Resolved UI glitches for better usability.

### 4.0.0 — 2025-12-24

Faster, smoother, and more reliable built for calculations anywhere. 
- Enhanced UI for a smoother experience. 
- Clear visuals for easier understanding of calculations. 
- Calculations updated to align with the latest industry standards. 
- Fixed minor issues affecting calculation stability. 
- Resolved UI glitches for better usability.

### 3.2.1 — 2025-07-18

New Feature additions and enhancements:
- Bug fixes
- Optimisations

### 3.2.0 — 2025-05-02

New Feature additions and enhancements:
- Bug fixes
- Optimisations

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## More apps by AsInt Inc.

- [CORE Inspection App](https://appshunter.io/ios/app/core-inspection-app/id1438397627)
- [AsInt IntelliSuite](https://appshunter.io/ios/app/asint-intellisuite/id6504094278)

All apps by AsInt Inc.: https://appshunter.io/developer/1438397626

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-23.*