# CleanMax Lite vs ECD Calculator

The clearest difference is in-app purchases: CleanMax Lite at none against ECD Calculator's 2. CleanMax Lite also leads on iOS requirement (8.0 vs 15.1). ECD Calculator's advantage is update cadence (every 5 days vs every 2 months) and ratings volume (5 vs 1). On price, rating, ads and monetization model there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for CleanMax Lite against 5.0 for ECD Calculator. 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.

CleanMax Lite ships an update every 2 months, ECD Calculator every 5 days. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | CleanMax Lite | ECD Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/cleanmax-lite/id1190494072/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 2 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 14 MB | 45 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Pegasus Vertex, Inc.](https://appshunter.io/developer/954796003) | [Drillsoft LLC](https://appshunter.io/developer/1787962403) |

## What reviewers say

### CleanMax Lite

[App page](https://appshunter.io/ios/app/cleanmax-lite/id1190494072)

This mobile tool assists with wellbore cleanup operations by calculating fluid volumes and contact times. It also generates 2D and 3D animations to visualize fluid displacement, aiming to reduce formation damage and enhance well productivity.

**Highlights:** Fluid volume calculations, Contact time calculations, 2D fluid displacement animations, 3D fluid displacement animations, Wellbore cleanup operations aid

**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 CleanMax Lite free?

CleanMax Lite 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, CleanMax Lite or ECD Calculator?

CleanMax Lite and ECD Calculator are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do CleanMax Lite or ECD Calculator have ads?

Neither CleanMax Lite nor ECD Calculator shows ads.

### Which is updated more often, CleanMax Lite or ECD Calculator?

CleanMax Lite ships an update every 2 months, and ECD Calculator every 5 days. Most recently, CleanMax Lite was updated on October 4, 2026 and ECD Calculator on October 6, 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.*