Comparison

OilField Hydrostatic Pressure. vs Quail Tools

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OilField Hydrostatic Pressure.

Features
Read full description

Welcome to the OilField Hydrostatic Pressure Pro app, meticulously crafted for oilfield specialists, drillers, and mud engineers seeking precise hydrostatic pressure calculations. Easily navigate through the intuitive tabs at the bottom to access the specific information you require. Our application is built using the latest API (American Petroleum Institute) data, ensuring accuracy and reliability. Here's what you can expect: - Fluid weight (mud weight) input in pounds per gallon (ppg) alongside True Vertical Depth (TVD) in feet. - Mud weight input in ppg with TVD in meters. - Mud weight input in pounds per cubic foot (lb/ft³) with TVD in feet. - A convenient MD to TVD calculator. Simply input your fluid weight and TVD, and the app will swiftly provide hydrostatic pressure readings in both pounds per square inch (psi) and kilopascals (kPa). Rest assured, our calculations are verified by professionals in reputable oilfield services companies. Plus, rigorous testing has been conducted across various oilfields, including those in the US, Canada, UAE, and Oman. For any inquiries or corrections, feel free to reach out to us at info@oilfieldengineer.com. Prioritize safety with our quick calculations for safe operations. Work Safe!

About

Quail Tools

Access essential specifications for Tubulars, BOPs, and API Casing offline. View detailed data like tool joint OD, make-up torque, and pressure ratings. Share spec sheets when an internet connection is available.

Highlights
  • Offline access to Tubular and BOP specs
  • API Casing General Information table
  • Detailed spec sheets for equipment
  • Shareable spec sheets (online)
  • Save spec sheets to device
  • Tool joint OD, ID, torque, tensile
  • BOP pressure rating, bonnet type, operating data
Features
Read full description

The app allows users to select Tubulars or BOPS to view specs. Users will also have access to our newly added API Casing General Information table. The initial page will allow the user to select between three sections of the app: Tubulars, BOPs, or Casing. Upon selecting "Tubulars" or "BOPs, the user will be presented with a built in table that contains essential information. Therefore, it does not require an internet connection to function! This will allow for constant, unhindered access to tubular and BOP information such as: tool joint OD, tool joint ID, max make up torque, premium tensile, BOP height, BOP weight, BOP pressure rating, BOP bonnet type, BOP operating data, and BOP shear testing videos. Upon selecting the "API Casing - General Information" button, the user will have access to a built in table containing standard API casing information. You can now view essential specs in areas where there is little or no cell phone reception. When selecting "Tubulars" or "BOPs", simply tap the item to view the spec sheet. This retrieves the spec sheet from our website, which can be shared using the button on the top right. (Please note: this function does require an internet connection). From there, the spec sheet can also be saved to your phone, or any handled via another app. We hope you enjoy this app as much as we have. Please feel free to provide feedback via the contact us button in the app.

Screenshots

OilField Hydrostatic Pressure.4 screens
Quail Tools4 screens

Verdict

The call

The clearest difference is price: Quail Tools at Free against OilField Hydrostatic Pressure.'s $0.99. Quail Tools also leads on update cadence (every 5 weeks vs every 38 months) and device support (3 vs 1). On ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Quail Tools is free to download; OilField Hydrostatic Pressure. costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OilField Hydrostatic Pressure. ships an update every 38 months, Quail Tools every 5 weeks. The most recent releases landed on October 8, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
OilField Hydrostatic Pressure. versus Quail Tools: the parameters behind the verdict, then further details
ParameterOilField Hydrostatic Pressure.Quail Tools
Price$0.99Free — better
Rating—5.0 (22 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—22 — better
Update frequencyEvery 38 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.012.0 — better
Further details — not scored
Size1 MB50 MB
Age rating4+4+
Developerzhandos uakanovAustin Angelle

In-app purchases

None

OilField Hydrostatic Pressure.

No in-app purchases

None

Quail Tools

No in-app purchases

Questions

Is OilField Hydrostatic Pressure. free?
OilField Hydrostatic Pressure. costs $0.99, with no in-app purchases.
Is Quail Tools free?
Quail Tools is free to download, with no in-app purchases.
Do OilField Hydrostatic Pressure. or Quail Tools have ads?
Neither OilField Hydrostatic Pressure. nor Quail Tools shows ads.
Which is updated more often, OilField Hydrostatic Pressure. or Quail Tools?
OilField Hydrostatic Pressure. ships an update every 38 months, and Quail Tools every 5 weeks. Most recently, OilField Hydrostatic Pressure. was updated on October 8, 2026 and Quail Tools on October 29, 2026.

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