Comparison

Engine Horsepower Calculator vs Pipefitter_Pro

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

Head to head
About

Engine Horsepower Calculator

Estimate your vehicle's engine horsepower using different calculation methods based on weight, time, and speed. This tool provides estimations for quarter-mile runs.

Highlights
  • Estimate engine horsepower
  • Quarter-mile run calculations
  • ET Method calculation
  • Trap-speed Method calculation
  • RPM Torque Method calculation
  • Vehicle weight input
Features
Read full description

Engine Horsepower Calculator are used to estimate the engine horsepower of your vehicle based on the weight, the time, and the speed to finish a quarter mile run. The weight to be used should include the mass of the vehicle, the driver, the passenger, and other load. The results of these calculator are estimations only. Horsepower Calculation Method The ET Method This method uses the vehicle weight and the elapsed time (ET) to finish a quarter mile (402.3 meters). The Trap-speed Method This method uses the vehicle weight and the speed at which the vehicle finished a quarter mile (402.3 meters) . The speed to be used here should be the finishing speed at the quarter mile point. The RPM Torque Method This method uses the torque value from the vehicle manual book, The RPM should indicate the maximum torque output. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

About

Pipefitter_Pro

This app is a pipe calculation tool that helps determine offsets, angles, and pipe segments. It offers a visual representation of angles and a slider for quick offset dimensioning, with dynamic angle updates. Future updates aim to include 3D angle calculations.

Highlights
  • Calculate pipe offsets
  • Determine angles
  • Calculate pipe segments
  • Visual angle representation
  • Slider for offset dimensioning
  • Dynamic angle updates
Features
Read full description

Pipefitter Pro is a calculator for pipefitters. It calculates offsets, elbow angles and spool lengths, and draws what it works out. Choose a case from the menu, enter the pipe diameter and elbow radius on the workshop keypad, then read the available results: angles, the spool between elbows, elbow takeout, arc lengths and caliper dimensions. CASES AND VIEWS • BACK TO BACK — two elbows, with either the angle or the offset unknown. • S TYPE — offset, travel or a fixed 45° option. • TEE OFFSET — calculations that include the branch diameter. • CALCULATOR — one elbow cut out of a 90°. • 3D — two elbows in space, set using the A, B and C dimensions of a box. • SLIDER / SLIDER S TYPE / SLIDER TEE — change the angle and watch the offset change. • 3D SLIDER — set the elbow orientation in a spatial model and read the angles, the insert and the live box dimensions. The box is a visual reference, not a cut length. Depending on the case, results appear on the Angle, Dimensions and Elbow tabs; selected cases add a 3D view you can rotate and zoom. UNITS AND INPUT Lengths in millimeters, centimeters and inches. Feet-and-inches notation and decimal or fractional inches are also supported. Choose 1/16 or 1/32 precision for inch fractions. Angles are given in decimal degrees. The workshop keypad and fraction picker help you enter dimensions; add frequently used cases to favorites. PIPE AND ELBOW DIMENSIONS The DIMENSIONS tile opens the built-in NPS/DN table. It contains outside diameters and centerline radii for long-radius and short-radius elbows. Add and edit dimensions, then use them in calculations. Save a list backup to a file and restore the list from a backup. BEFORE YOU CUT Pipefitter Pro supports the preparation of workshop work. Check the dimensions against your technical documentation and your shop procedures before cutting and welding.

Screenshots

Engine Horsepower Calculator4 screens
Pipefitter_Pro4 screens

Verdict

The call

The clearest difference is rating: Engine Horsepower Calculator at 4.2 against Pipefitter_Pro's 3.0. Engine Horsepower Calculator also leads on price ($2.99 vs $10.99) and ratings volume (6 vs 2). On update cadence, ads, in-app purchases and monetization model 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

Engine Horsepower Calculator costs $2.99 and Pipefitter_Pro $10.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Engine Horsepower Calculator holds the better App Store score, 4.2 against 3.0. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

UpkeepUpdate frequency

Engine Horsepower Calculator ships an update every 29 months, Pipefitter_Pro every 24 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard4 real differences · 6 level
Engine Horsepower Calculator versus Pipefitter_Pro: the parameters behind the verdict, then further details
ParameterEngine Horsepower CalculatorPipefitter_Pro
Price$2.99 — better$10.99
Rating4.2 (6 ratings) — better3.0 (2 ratings)
Positive reviews—53.8% of reviews
Number of ratings6 — better2
Update frequencyEvery 29 monthsEvery 24 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13 — better15.0
Further details — not scored
Size1 MB50 MB
Age rating4+4+
DeveloperNitrioTomasz Szymanski

Customer experience

Engine Horsepower Calculator

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%

Pipefitter_Pro

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews13 reviews
Positive53.8%
Neutral7.7%
Negative38.5%

In-app purchases

None

Engine Horsepower Calculator

No in-app purchases

None

Pipefitter_Pro

No in-app purchases

Questions

Is Engine Horsepower Calculator free?
Engine Horsepower Calculator costs $2.99, with no in-app purchases.
Is Pipefitter_Pro free?
Pipefitter_Pro costs $10.99, with no in-app purchases.
Which has better reviews, Engine Horsepower Calculator or Pipefitter_Pro?
Engine Horsepower Calculator is rated higher. Engine Horsepower Calculator averages 4.2 out of 5 from 6 ratings, while Pipefitter_Pro averages 3.0 from 2 ratings.
Do Engine Horsepower Calculator or Pipefitter_Pro have ads?
Neither Engine Horsepower Calculator nor Pipefitter_Pro shows ads.
Which is updated more often, Engine Horsepower Calculator or Pipefitter_Pro?
Engine Horsepower Calculator ships an update every 29 months, and Pipefitter_Pro every 24 months. Most recently, Engine Horsepower Calculator was updated on October 24, 2026 and Pipefitter_Pro on October 27, 2026.

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