# SSTDrillPipe vs ECD Calculator

The clearest difference is rating: ECD Calculator at 5.0 against SSTDrillPipe's 4.0. ECD Calculator also leads on ratings volume (5 vs 1). SSTDrillPipe's advantage is in-app purchases (none vs 2) and iOS requirement (7.1 vs 15.1). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. ECD Calculator sells 2 one-off in-app purchases. SSTDrillPipe asks for nothing beyond the download.

ECD Calculator holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: ECD Calculator has 5 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | SSTDrillPipe | ECD Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/sstdrillpipe/id919540380/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ecd-calculator/id6754762850/reviews)** |
| Number of ratings | 1 | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Monetization | Free | Free |
| Size | 3 MB | 45 MB |
| Requires iOS | **7.1** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Sub Surface Tools, LLC](https://appshunter.io/developer/919540379) | [Drillsoft LLC](https://appshunter.io/developer/1787962403) |

## What reviewers say

### SSTDrillPipe

[App page](https://appshunter.io/ios/app/sstdrillpipe/id919540380)

Access essential mechanical properties and data for drill pipe. View detailed information like tensile strength, collapse pressure, and capacity. Visualize key data through graphs in landscape mode.

**Highlights:** Mechanical properties data, Tensile strength, Collapse pressure, Drift diameter, Capacity and displacement, Graphical analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### ECD Calculator

[App page](https://appshunter.io/ios/app/ecd-calculator/id6754762850)

This utility app assists drilling and mud engineers in calculating Equivalent Circulating Density (ECD) at any point during operations. It offers a streamlined process with just a few clicks.

**Highlights:** ECD calculation, Drilling engineering, Mud engineering, Point-of-operation calculation, Streamlined interface

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50 credits | $3.99 | one-time |
| 300 Credits | $9.99 | one-time |


## Frequently asked questions

### Is SSTDrillPipe free?

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

### Is ECD Calculator free?

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

### Which has better reviews, SSTDrillPipe or ECD Calculator?

ECD Calculator is rated higher. SSTDrillPipe averages 4.0 out of 5 from 1 ratings, while ECD Calculator averages 5.0 from 5 ratings.

### Do SSTDrillPipe or ECD Calculator have ads?

Neither SSTDrillPipe nor ECD Calculator shows ads.

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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.*