# CORE Calculator App vs LMF CompXpert

The clearest difference is in-app purchases: LMF CompXpert at none against CORE Calculator App's 3. CORE Calculator App's advantage is update cadence (every 3 months vs every 12 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CORE Calculator App sells 3 in-app purchases, starting at $4.99 per month. LMF CompXpert asks for nothing beyond the download.

CORE Calculator App ships an update every 3 months, LMF CompXpert every 12 months. The most recent releases landed on October 17, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | CORE Calculator App | LMF CompXpert |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/core-calculator-app/id1447118499/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 148 MB | 154 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AsInt Inc.](https://appshunter.io/developer/1438397626) | [Leobersdorfer Maschinenfabrik GmbH](https://appshunter.io/developer/1590990584) |

## What reviewers say

### CORE Calculator App

[App page](https://appshunter.io/ios/app/core-calculator-app/id1447118499)

This app provides inspectors in the oil and gas industry with essential calculations for asset integrity. It offers tools for determining Tmin, MAWP, corrosion rates, and remaining life based on industry standards.

**Highlights:** Tmin calculations, MAWP calculations, Corrosion rate calculations, Remaining life determination, Construction material information, Damage mechanism identification

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Materials Lookup | $4.99 | per month |
| Damage Mech Screener | $9.99 | per month |
| Materials Lookup | $5.99 | one-time |


### LMF CompXpert

[App page](https://appshunter.io/ios/app/lmf-compxpert/id1608167192)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CORE Calculator App free?

CORE Calculator App is free to download, with in-app purchases available.

### Is LMF CompXpert free?

LMF CompXpert is free to download, with no in-app purchases.

### Do CORE Calculator App or LMF CompXpert have ads?

Neither CORE Calculator App nor LMF CompXpert shows ads.

### Which is updated more often, CORE Calculator App or LMF CompXpert?

CORE Calculator App ships an update every 3 months, and LMF CompXpert every 12 months. Most recently, CORE Calculator App was updated on October 17, 2026 and LMF CompXpert on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*