# CleanMax Lite vs Process Engineer Calc

The clearest difference is update cadence: Process Engineer Calc at every 10 days against CleanMax Lite's every 2 months. CleanMax Lite's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 17.0). On price, 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.

CleanMax Lite ships an update every 2 months, Process Engineer Calc every 10 days. The most recent releases landed on September 17, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | CleanMax Lite | Process Engineer Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cleanmax-lite/id1190494072/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 14 MB | 11 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pegasus Vertex, Inc.](https://appshunter.io/developer/954796003) | [冯泰 蔡](https://appshunter.io/developer/1896641064) |

## 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


### Process Engineer Calc

[App page](https://appshunter.io/ios/app/process-engineer-calc-lms/id6774295442)

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

**In-app purchases:** none


## Frequently asked questions

### Is CleanMax Lite free?

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

### Is Process Engineer Calc free?

Process Engineer Calc is free to download, with no in-app purchases.

### Do CleanMax Lite or Process Engineer Calc have ads?

Neither CleanMax Lite nor Process Engineer Calc shows ads.

### Which is updated more often, CleanMax Lite or Process Engineer Calc?

CleanMax Lite ships an update every 2 months, and Process Engineer Calc every 10 days. Most recently, CleanMax Lite was updated on September 17, 2026 and Process Engineer Calc on September 12, 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.*