# CORE Calculator App vs Pipeq Pipe Sizes

The clearest difference is review sentiment: CORE Calculator App at 100% against Pipeq Pipe Sizes's 0%. CORE Calculator App also leads on rating (5.0 vs 3.0) and ratings volume (11 vs 1). Pipeq Pipe Sizes's advantage is in-app purchases (none vs 3) and update cadence (daily vs every 3 months). On price, ads and device support there is nothing between them.

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

CORE Calculator App holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: CORE Calculator App has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of CORE Calculator App's written reviews are positive against 0% of Pipeq Pipe Sizes's.

CORE Calculator App ships an update every 3 months, Pipeq Pipe Sizes daily. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | CORE Calculator App | Pipeq Pipe Sizes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/core-calculator-app/id1447118499/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/pipeq-pipe-sizes/id1553615184/reviews) |
| Number of ratings | **11** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 148 MB | 59 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AsInt Inc.](https://appshunter.io/developer/1438397626) | [Tymon Versmoren](https://appshunter.io/developer/1534364179) |

## 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 |


### Pipeq Pipe Sizes

[App page](https://appshunter.io/ios/app/pipeq-pipe-sizes/id1553615184)

Easily view and convert various pipe sizes between Metric and Inch units. Supports conversion between Kgm and Lbs/Ft with simple finger swipes and button presses.

**Highlights:** View pipe sizes, Convert Inch to Metric, Convert Metric to Inch, Convert Kgm to Lbs/Ft, Convert Lbs/Ft to Kgm, Easy to use interface

**Features:** macOS Compatibility

**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 Pipeq Pipe Sizes free?

Pipeq Pipe Sizes is free to download, with no in-app purchases.

### Which has better reviews, CORE Calculator App or Pipeq Pipe Sizes?

CORE Calculator App is rated higher. CORE Calculator App averages 5.0 out of 5 from 11 ratings, while Pipeq Pipe Sizes averages 3.0 from 1 ratings.

### Do CORE Calculator App or Pipeq Pipe Sizes have ads?

Neither CORE Calculator App nor Pipeq Pipe Sizes shows ads.

### Which is updated more often, CORE Calculator App or Pipeq Pipe Sizes?

CORE Calculator App ships an update every 3 months, and Pipeq Pipe Sizes daily. Most recently, CORE Calculator App was updated on October 17, 2026 and Pipeq Pipe Sizes on October 7, 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.*