Comparison

Compressor HP vs Cementing Engineer

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

Head to head
About

Compressor HP

Features
Read full description

Calculate hermetic compressor size (Horse power or watts). Just enter electric data and click or tap calculate button to see the compressor power.

About

Cementing Engineer

This app is a field calculator for oilfield cementing operations. It allows users to input wellbore geometry and slurry details to get live, updated calculations for volumes, pressures, and pump schedules. The app also features a live well schematic and a tally book for saving and recalling job details.

Highlights
  • Field calculator for oilfield cementing
  • Live, updating calculations for volumes and pressures
  • Wellbore geometry and slurry stack input
  • Derived results with detailed math
  • Live well schematic
  • Tally Book for saving and recalling jobs
  • Offline functionality
Features
Read full description

Cementing Engineer is a field calculator for oilfield cementing operations, built by a cementer for cementers. The app requires an auto-renewable in-app subscription after the 7-day free trial to access the calculator, Tally Book, saved jobs, schematics, and derived cementing results. Pick the job - conductor, surface, intermediate, production, two-stage, drilling or production liner, balanced plug, kick-off plug, plug & abandon, or Bradenhead squeeze - enter the wellbore geometry and slurry stack, and every number updates live as you type. DERIVED RESULTS, SHOWN WITH THE MATH - Annular, shoe track, and displacement volumes with the capacity factors behind each number - Fluid placement tops and returns at surface - Volume calculations by slurry with sacks and totals - Pump schedule with rates and durations - Thickening time requirements - Hydrostatic, differential, lift, and bump pressures with burst limits - Mix water and total water requirements LIVE WELL SCHEMATIC A measured-depth schematic of casing, open hole, and fluid placement that redraws as the design changes, including two-stage and liner jobs. TALLY BOOK Save any job to the Tally Book: a browsable log of every well with its full design, well information, schematic, and complete derived results. Reopen any saved job straight into the calculator. WORKS IN THE FIELD Calculations run on the device, so the math works with no signal at the wellsite. Sign in with Apple or Google to keep your Tally Book synced across your devices. SUBSCRIPTION REQUIRED AFTER TRIAL Start with a 7-day free trial. After the trial, Apple automatically bills the selected plan unless canceled before renewal: $9.99/month or $79.99/year. Cancel anytime in your App Store account settings. Terms of Use: https://cement-phone-calculator.pages.dev/terms Privacy Policy: https://cement-phone-calculator.pages.dev/privacy Field estimate only - verify final volumes, pressures, and regulatory requirements before pumping.

Screenshots

Compressor HP2 screens
Cementing Engineer4 screens

Verdict

The call

The clearest difference is update cadence: Cementing Engineer at fortnightly against Compressor HP's every 4 months. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Compressor HP sells 3 one-off in-app purchases and Cementing Engineer sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Compressor HP ships an update every 4 months, Cementing Engineer fortnightly. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

Scorecard1 real difference · 9 level
Compressor HP versus Cementing Engineer: the parameters behind the verdict, then further details
ParameterCompressor HPCementing Engineer
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
Monetization—Subscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.4 — better15.0
Further details — not scored
Size3 MB18 MB
Age rating4+4+
DeveloperMelchisedec Martinez RodriguezRondo Wright

In-app purchases

3 purchases

Compressor HP

One-time3
  • Unlock capacitor size$0.99
  • Unlock compressors type$2.99
  • Unlock all refrigerants$2.99
2 purchases

Cementing Engineer

Subscriptions2
  • Pro Monthly7 Days trial$9.991 Month
  • Pro Annual7 Days trial$79.991 Year

Questions

Is Compressor HP free?
Compressor HP is free to download, with in-app purchases available.
Is Cementing Engineer free?
Cementing Engineer is free to download, with in-app purchases available.
Do Compressor HP or Cementing Engineer have ads?
Neither Compressor HP nor Cementing Engineer shows ads.
Which is updated more often, Compressor HP or Cementing Engineer?
Compressor HP ships an update every 4 months, and Cementing Engineer fortnightly. Most recently, Compressor HP was updated on October 6, 2026 and Cementing Engineer on October 5, 2026.

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