# CPTCorr

> CPTCorr (iPhone/iPad app by Intellicreed Sdn. Bhd..)

- Source: https://appshunter.io/ios/app/cptcorr/id6767098207 (this page in markdown: same URL + `.md`)
- Developer: [Intellicreed Sdn. Bhd.](https://appshunter.io/developer/1735640078)
- Category: Productivity, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.2 · 6 MB
- Languages: American English
- Released: 2026-05-10
- Data updated: 2026-07-21
- User reviews in markdown: https://appshunter.io/ios/app/cptcorr/id6767098207/reviews.md

## What is CPTCorr?

Import Cone Penetration Test (CPT) data files and analyse the data for various correlations, soil behaviour interpretation, stratigraphy profiling, and geotechnical parameter estimation. Supports .csv and .txt data files.

Visualise CPT results through interactive charts and depth profiles and streamline subsurface investigation workflows for engineers and geotechnical professionals. Export processed data to PDF.

Try the trial version for free to view the following parameters:
1.	Cone resistance, qc,
2.	Corrected cone resistance, qt,
3.	Sleeve friction resistance, fs,
4.	Corrected sleeve friction resistance, ft,
5.	Water pressure at base of sleeve, u2,
6.	Friction ratio, Rf.
Subscribe to the Pro Version to access features to:
1.	CPT analysis and viewing of among others the following parameters:
a.	Net cone resistance,
b.	Normalised cone resistance,
c.	Normalised soil behaviour type (SBT) index,
d.	Equivalent standard penetration test (SPT) field blow count,
e.	Relative density. 
2.	Soil behaviour type (SBT) charts.

Pro Version Subscription (Auto-Renews)
-	Pro Version (1 Month) – Monthly Subscription
-	Pro Version (6 Months) – 6 Months Subscription
-	Pro Version (1 Year) – 1 Year Subscription

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Version (1 Year) | $79.99 | per year |
| Pro Version (6 Months) | $59.99 | per 6 months |
| Pro Version (1 Month) | $19.99 | per month |



## Version history (last 5 releases)

### 1.1.1 — 2026-07-20

1. Fixed crashes.

### 1.1.0 — 2026-06-15

1. Fixed plotted values for Qtn-Fr chart.

### 1.0.5 — 2026-06-04

1. Bug fixed in undrained shear strength correlation.

### 1.0.4 — 2026-05-22

1. Fixed typo in displayed expression.
2. Added app and pdf chart colour setting.

### 1.0.3 — 2026-05-14

1. Fixed bugs relating to project and user information, and correlation.

## More apps by Intellicreed Sdn. Bhd.

- [GeoProp](https://appshunter.io/ios/app/geoprop/id6479341666)
- [HeatCond2D](https://appshunter.io/ios/app/heatcond2d/id6737733095)

All apps by Intellicreed Sdn. Bhd.: https://appshunter.io/developer/1735640078

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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 2026-07-21.*