# Process & Control Engineering vs H/Comet Mobile

The clearest difference is update cadence: H/Comet Mobile at every 3 weeks against Process & Control Engineering's every 7 months. H/Comet Mobile also leads on iOS requirement (9.2 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Process & Control Engineering ships an update every 7 months, H/Comet Mobile every 3 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Process & Control Engineering | H/Comet Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hcomet-mobile/id1138408392/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 31 MB | 58 MB |
| Requires iOS | 16.0 | **9.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Datateam Business Media Ltd](https://appshunter.io/developer/531755760) | [Haverly Systems, Inc.](https://appshunter.io/developer/1125079838) |

## What reviewers say

### Process & Control Engineering

[App page](https://appshunter.io/ios/app/process-and-control-engineering/id973151584)

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

**In-app purchases:** none


### H/Comet Mobile

[App page](https://appshunter.io/ios/app/hcomet-mobile/id1138408392)

Access and manage crude assay data, slates, blends, and cut sets on the go. Search for assays, modify cut sets, and perform slate operations like comparisons and graphing. Analyze data with value/cut lookup tools.

**Highlights:** Access assay libraries, slates, blends, and cut sets, Search and view detailed assay data, Re-cut assays with H/CAMS technology, Create and modify cut sets, Access and modify existing or create new slates, Perform slate operations like cut comparisons and graphing, Access and modify existing or create new blends

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Process & Control Engineering free?

Process & Control Engineering is free to download, with no in-app purchases.

### Is H/Comet Mobile free?

H/Comet Mobile is free to download, with no in-app purchases.

### Do Process & Control Engineering or H/Comet Mobile have ads?

Neither Process & Control Engineering nor H/Comet Mobile shows ads.

### Which is updated more often, Process & Control Engineering or H/Comet Mobile?

Process & Control Engineering ships an update every 7 months, and H/Comet Mobile every 3 weeks. Most recently, Process & Control Engineering was updated on November 1, 2026 and H/Comet Mobile on November 2, 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.*