Comparison

Drilling Hydraulics (Basic) vs Petroleum Field Calculator

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

Head to head
About

Drilling Hydraulics (Basic)

Features
Read full description

Drilling Hydraulics (Basic Calculations) provides an useful tool to students, drillers, technicians, drilling engineers and other professionals of the oil well drilling. Unit System with setting of decimals. Formulas and Calculations: - Capacities and Volumes - Mud Properties and Gradient - Temperature Gradient - Pressure Gradient - Hydrostatic Pressure - Mud Pump Output - Hydraulics on Drill Bit nozzles - Friction Losses (on borehole section) - ECD - Equivalent Circulating Density - Pressure with well closed (Kick/LOT/FIT) Formulas: - The factors/constants are calculated based on different units of measures. iCloud: - Auto saves to restore when to open the app again - Shares the same data on devices with same Apple ID 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.

About

Petroleum Field Calculator

Features
Read full description

Designed for engineers, students, and safety personnel in the upstream oil and gas industry, this easy-to-use app simplifies essential oilfield calculations. Quickly compute key drilling, well control, and production parameters with a streamlined interface. β€’ Comprehensive Calculations: Access a wide range of industry-standard formulas, including Hydrostatic Pressure, Mud Weight, and more. β€’ Seamless Unit Switching: Instantly convert between imperial and metric (SI) units with built-in conversion factors. β€’ Offline Access: No internet? No problem. Perform calculations anywhere, even in remote field locations. β€’ Efficient & Reliable: Save time with a self-contained, searchable list of calculationsβ€”no need to reference manuals or desktop software. Whether you’re on-site, in training, or troubleshooting critical operations, this app is your go-to solution for fast, accurate oilfield calculations.

Screenshots

Drilling Hydraulics (Basic)4 screens
Petroleum Field Calculator4 screens

Verdict

The call

The clearest difference is update cadence: Petroleum Field Calculator at every 5 weeks against Drilling Hydraulics (Basic)'s every 14 months. Petroleum Field Calculator also leads on price ($0.99 vs $4.99). Drilling Hydraulics (Basic)'s advantage is iOS requirement (10.3 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Drilling Hydraulics (Basic) costs $4.99 and Petroleum Field Calculator $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Drilling Hydraulics (Basic) ships an update every 14 months, Petroleum Field Calculator every 5 weeks. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

Scorecard3 real differences Β· 3 level
Drilling Hydraulics (Basic) versus Petroleum Field Calculator: the parameters behind the verdict, then further details
ParameterDrilling Hydraulics (Basic)Petroleum Field Calculator
Price$4.99$0.99 β€” better
Update frequencyEvery 14 monthsEvery 5 weeks β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS10.3 β€” better17.6
Further details β€” not scored
Size7 MB4 MB
Age rating4+4+
DeveloperCarlos MouraPaul Femiak

In-app purchases

None

Drilling Hydraulics (Basic)

No in-app purchases

None

Petroleum Field Calculator

No in-app purchases

Questions

Is Drilling Hydraulics (Basic) free?
Drilling Hydraulics (Basic) costs $4.99, with no in-app purchases.
Is Petroleum Field Calculator free?
Petroleum Field Calculator costs $0.99, with no in-app purchases.
Do Drilling Hydraulics (Basic) or Petroleum Field Calculator have ads?
Neither Drilling Hydraulics (Basic) nor Petroleum Field Calculator shows ads.
Which is updated more often, Drilling Hydraulics (Basic) or Petroleum Field Calculator?
Drilling Hydraulics (Basic) ships an update every 14 months, and Petroleum Field Calculator every 5 weeks. Most recently, Drilling Hydraulics (Basic) was updated on October 10, 2026 and Petroleum Field Calculator on October 14, 2026.

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