Comparison

Flow Rate Help vs Darcy Weisbach Equations Calc

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

Head to head
About

Flow Rate Help

Calculate liquid flow rate, pipe diameter, or velocity with ease. Customize units for diameter, velocity, and flow rate, and set your preferred decimal places for precise results.

Highlights
  • Solve flow rate equations
  • Customizable diameter units
  • Customizable velocity units
  • Customizable flow rate units
  • Set decimal places
Features
Read full description

Quickly find flow rate, required pipe diameter or velocity of a liquid! Features Include: - Accurately solve flow rate equations - Set preferred diameter unit from: mm, cm, m, km, inches, feet, yards and miles - Set preferred velocity unit from: m/s, m/min, km/min, km/h, ft/s, ft/min, mi/min and mph - Set preferred flow rate unit from: m³/s, m³/min, m³/h, l/s, l/min, l/h, gps. gpm and gph - Select your preferred number of decimal places

About

Darcy Weisbach Equations Calc

This physics and math calculator quickly computes fluid head loss, friction factor, and other pipe flow parameters. It supports various units and offers precise calculations up to 16 decimal places. Results can be easily copied to other applications.

Highlights
  • Instant calculation
  • Copyable results
  • Formula reference
  • 16 decimal place precision
  • Multiple unit support
  • Ad-free and private
Features
Read full description

Darcy-Weisbach Equations Calculator is a physics/math calculator designed to find fluid head loss, friction factor, pipe length, pipe diameter, or fluid flow velocity quickly and easily. Features: - Instant calculation. - Results are copyable to other apps. - Formulas are included as a reference. - Support up to 16 decimal places. - Support various units for each input. - Works seamlessly on both iPhone and iPad. - Lightweight, compact app optimized for everyday use. - Ad-free and built with privacy in mind. Darcy-Weisbach Equations for Hydraulics Fluid Mechanics In fluid dynamics, the Darcy–Weisbach equation is an empirical equation that relates the head loss or pressure loss due to friction along a given length of pipe to the average velocity of the fluid flow for an incompressible fluid. The equation is named after Henry Darcy and Julius Weisbach. Darcy-Weisbach equations are used to calculate the major pressure or head loss due to friction in pipes, ducts, or tubes. Formula: h = fLv²/2Dg Where: h - is the head loss f - is the friction factor L - is the pipe length D - is the pipe diameter v - is the flow velocity g - is the acceleration of gravity Thanks for your support, and do visit nitrio.com for more apps for your iOS devices.

Screenshots

Flow Rate Help3 screens
Darcy Weisbach Equations Calc4 screens

Verdict

The call

The clearest difference is price: Flow Rate Help at $0.99 against Darcy Weisbach Equations Calc's $2.99. Flow Rate Help also leads on iOS requirement (11.0 vs 13). On review sentiment, update cadence, 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

Flow Rate Help costs $0.99 and Darcy Weisbach Equations Calc $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Flow Rate Help ships an update every 15 months, Darcy Weisbach Equations Calc every 26 months. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Flow Rate Help versus Darcy Weisbach Equations Calc: the parameters behind the verdict, then further details
ParameterFlow Rate HelpDarcy Weisbach Equations Calc
Price$0.99 — better$2.99
Rating4.3 (44 ratings) — better—
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings44 — better—
Update frequencyEvery 15 months — betterEvery 26 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS11.0 — better13
Further details — not scored
Size3 MB1 MB
Age rating4+4+
DeveloperArmchair EngineeringNitrio

Customer experience

Flow Rate Help

All ratings44 ratings
Positive86.4%
Neutral0.0%
Negative13.6%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Darcy Weisbach Equations Calc

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Flow Rate Help

No in-app purchases

None

Darcy Weisbach Equations Calc

No in-app purchases

Questions

Is Flow Rate Help free?
Flow Rate Help costs $0.99, with no in-app purchases.
Is Darcy Weisbach Equations Calc free?
Darcy Weisbach Equations Calc costs $2.99, with no in-app purchases.
Do Flow Rate Help or Darcy Weisbach Equations Calc have ads?
Neither Flow Rate Help nor Darcy Weisbach Equations Calc shows ads.
Which is updated more often, Flow Rate Help or Darcy Weisbach Equations Calc?
Flow Rate Help ships an update every 15 months, and Darcy Weisbach Equations Calc every 26 months. Most recently, Flow Rate Help was updated on November 2, 2026 and Darcy Weisbach Equations Calc on October 25, 2026.

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