# Dr. DE vs Workover Assistant

The clearest difference is rating: Workover Assistant at 5.0 against Dr. DE's 4.5. Dr. DE's advantage is update cadence (every 3 months vs every 58 months) and ratings volume (16 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Workover Assistant holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Dr. DE has 16 ratings behind it against 2, so its average is the more settled of the two.

Dr. DE ships an update every 3 months, Workover Assistant every 58 months. The most recent releases landed on July 18, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Dr. DE | Workover Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (16 ratings)](https://appshunter.io/ios/app/dr-de/id954796004/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/workover-assistant/id1117692519/reviews)** |
| Number of ratings | **16** | 2 |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 58 months |
| Monetization | Free | Free |
| Size | 33 MB | 3 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Pegasus Vertex, Inc.](https://appshunter.io/developer/954796003) | [Kelly Gayneaux](https://appshunter.io/developer/1082576429) |

## What reviewers say

### Dr. DE

[App page](https://appshunter.io/ios/app/dr-de/id954796004)

This mobile toolbox simplifies complex drilling engineering calculations. It offers a comprehensive suite of 29 functions across 11 categories, eliminating the need for handbooks and improving efficiency for engineers and technicians.

**Highlights:** 29 drilling engineering functions, 11 functional groups, Bit hydraulics calculations, Hole cleaning analysis, Well control solutions, Unit conversion tools, Tank capacity calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### Workover Assistant

[App page](https://appshunter.io/ios/app/workover-assistant/id1117692519)

This utility app assists oil and gas field personnel with essential calculations for well workovers. It provides tools for hydrostatic pressure, internal capacity, and other critical functions, serving as a convenient resource for rig site or office use.

**Highlights:** Hydrostatic pressure calculations, Internal capacity calculations, Oil and gas well workover tools, Rig site and office utility, Accurate field calculations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dr. DE free?

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

### Is Workover Assistant free?

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

### Which has better reviews, Dr. DE or Workover Assistant?

Workover Assistant is rated higher. Dr. DE averages 4.5 out of 5 from 16 ratings, while Workover Assistant averages 5.0 from 2 ratings.

### Do Dr. DE or Workover Assistant have ads?

Neither Dr. DE nor Workover Assistant shows ads.

### Which is updated more often, Dr. DE or Workover Assistant?

Dr. DE ships an update every 3 months, and Workover Assistant every 58 months. Most recently, Dr. DE was updated on July 18, 2026 and Workover Assistant on June 5, 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.*