# P Numbers vs CORE Inspection App

The clearest difference is update cadence: CORE Inspection App at every 4 months against P Numbers's every 39 months. CORE Inspection App also leads on rating (5.0 vs 4.8). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CORE Inspection App holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 5 and 5 respectively.

P Numbers ships an update every 39 months, CORE Inspection App every 4 months. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | P Numbers | CORE Inspection App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (5 ratings)](https://appshunter.io/ios/app/p-numbers/id911716649/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/core-inspection-app/id1438397627/reviews)** |
| Number of ratings | 5 | 5 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 13 MB | 46 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ASMEIX CORPORATION](https://appshunter.io/developer/911716652) | [AsInt Inc.](https://appshunter.io/developer/1438397626) |

## What reviewers say

### P Numbers

[App page](https://appshunter.io/ios/app/p-numbers/id911716649)

Quickly access weldability grouping numbers for welding procedures and performance qualifications. This app provides data from authoritative sources like ASME Section IX and AWS B2.1.

**Highlights:** Base metal weldability grouping lookup, Welding procedure qualification data, Performance qualification data, ASME Section IX Table QW/QB-422 data, AWS B2.1 Table C1 and C2 data, ISO/TR 20173 data

**Features:** macOS Compatibility

**In-app purchases:** none


### CORE Inspection App

[App page](https://appshunter.io/ios/app/core-inspection-app/id1438397627)

This app streamlines asset and location management for inspections, allowing users to calculate critical pressure and thickness values. It supports photo documentation and customizable checklists, with offline capabilities for global use across various asset-intensive industries.

**Highlights:** Asset and location management, Tmin and MAWP calculations, Photo documentation, Customizable checklists, Offline capability, ISO 14224 asset settings

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is P Numbers free?

P Numbers is free to download, with no in-app purchases.

### Is CORE Inspection App free?

CORE Inspection App is free to download, with no in-app purchases.

### Which has better reviews, P Numbers or CORE Inspection App?

CORE Inspection App is rated higher. P Numbers averages 4.8 out of 5 from 5 ratings, while CORE Inspection App averages 5.0 from 5 ratings.

### Do P Numbers or CORE Inspection App have ads?

Neither P Numbers nor CORE Inspection App shows ads.

### Which is updated more often, P Numbers or CORE Inspection App?

P Numbers ships an update every 39 months, and CORE Inspection App every 4 months. Most recently, P Numbers was updated on October 19, 2026 and CORE Inspection App on October 25, 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.*