Workover Assistant vs Gas Compressibility Factor Z
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Workover Assistant
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.
- Hydrostatic pressure calculations
- Internal capacity calculations
- Oil and gas well workover tools
- Rig site and office utility
- Accurate field calculations
Read full descriptionHide full description
Workover Assistant is designed to help field personnel perform quick, accurate calculations related to oil and gas well workovers. It includes tools for hydrostatic pressure, internal capacity, and other common workover functions—making it a handy companion for the rig site or office.
Gas Compressibility Factor Z
Read full descriptionHide full description
This app is a tool very useful for complex calculations of the gas compressibility factor Z for natural gases used in the Gas Law: PV = nRTZ. Formulas by Hall and Yarborough (1973) correlation to estimate z-factor of natural gas. Standing and Katz’s Chart to Z-Factor vs Reduced Pressure and Reduced Temperature was plotted by app using formulas by Hall and Yarborough (1973). Check for oil & gas applications in our portfolio on the App Store. Please visite our website for links at www.wellcontrol.com.br Please, you can contribute for improvements. Report bugs and suggestions to contact@wellcontrol.com.br DISCLAIMER: These tools & materials are provided 'as is' without warranties of any kind, express or implied. Please verify the tools provided by this application by yourself before you use them. Ensure you understand the impact of using these tools. Any use you choose to make of these tools & materials is undertaken by you entirely at you own risk.
Screenshots
Verdict
The clearest difference is update cadence: Gas Compressibility Factor Z at every 8 months against Workover Assistant's every 58 months. Gas Compressibility Factor Z also leads on iOS requirement (13.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Workover Assistant ships an update every 58 months, Gas Compressibility Factor Z every 8 months. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.
| Parameter | Workover Assistant | Gas Compressibility Factor Z |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 58 months | Every 8 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Kelly Gayneaux | Carlos Moura |
In-app purchases
Workover Assistant
No in-app purchases
Gas Compressibility Factor Z
No in-app purchases
Questions
Is Workover Assistant free?
Is Gas Compressibility Factor Z free?
Do Workover Assistant or Gas Compressibility Factor Z have ads?
Which is updated more often, Workover Assistant or Gas Compressibility Factor Z?
Other comparisons
