Comparison

Fluid Pressure Drop vs Torricelli

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

Head to head
About

Fluid Pressure Drop

Calculate fluid transmission energy loss for industrial applications. Choose from common fluids, pipe schedules, and materials to determine pressure loss. Supports custom fluids and includes calculations for valves and fittings.

Highlights
  • Pressure loss computation
  • Custom fluid creation
  • Valve and fitting loss calculation
  • Multiple fluid options
  • Various pipe schedules and materials
  • Unit of measurement selection
Features
Read full description

This app computes energy loss involved in transmission of fluids for industrial applications. Users can pick from a list of fifteen most common fluids, pipe schedules and sizes with different material of construction to determine overall pressure loss. A judicious selection of pipe size is often a trade off between initial cost and subsequent energy cost involved in transmission of fluid from one point to another. Therefore, the app can be a helpful tool for practicing engineers and designers in analyzing different matrix. In addition, fluids that are not in the list, users can create a custom fluid with property data that can be saved and compute the pressure loss using the model provided in this app. Pressure loss is computed using Darcy’s equation, which gives a good estimate for both liquid and gases. For gases, the method is valid if the fluid velocity is within 40% of its sonic velocity. Also this app provides result of different flow parameters used in the computation of pressure loss. Section has been added for computation of pressure losses in valves and fittings. Users can choose any generic valve or fitting from the list provided in this app that are commonly used in industries. List of fluids: Air, Steam, Water, Nitrogen, Oxygen, Hydrogen, Helium, CO2, Methane, Ethane, Chlorine, Ammonia, Argon, Hydraulic oil, HFC (R410A), Custom (user's choice gas or liquid). Pipe Schedules: 10, 20, 30, 40, 60, 80, 100, 120, 140, 160. Users can pick applicable sizes under nominal diameter for which app provides the corresponding inside and outside diameter. Material of construction: Steel, SS, GI, CI, Concrete, Copper, Aluminum, PVC, Glass, Wood, FRP, Rubber. Based on the size, length and material of construction, the app gives the total weight of the pipe for trade-off analysis. Valves and Fittings: Globe valve, Gate valve, Ball valve, Butterfly valve, Angle valve, Check-valve, Check-angle, Check-lift. Elbow, Reducer, Diffuser, T-couple, Bend-U, Bend-45, Bend-90. Flow Parameters: Fluid velocity, Reynolds number and pipe friction coefficient are computed as a function of pipe size, fluid density and viscosity. App has its own algorithm to compute the coefficient of pipe friction based on roughness factor for the given material and Reynolds number under turbulent conditions. For laminar flow, it is a function of Reynolds number and irrespective of pipe roughness. For more accuracy users can edit the pipe roughness factor. For gases, additional data on sonic velocity is provided for a quick reference and validity. Unit of Measurement: Users can choose different unit of measurement for both flow as well as pressure drop under given unit standard (SI or USCS). This can be conveniently selected while choosing the fluid from the picker list as shown in the screen shots.

About

Torricelli

Features
Read full description

Torricelli's Theorem Calculator Based on Torricelli's Law, also known as Torricelli's Theorem, this calculator is a tool in fluid dynamics that relates the speed of fluid flowing out of an opening to the height of the fluid above the opening. Features: • Input parameters such as Tank Height, Tank Radius, Spigot Height, and Spigot Radius. • Simulate water flowing out from the tank in 3D. • Simulate the volume of water remaining over time. • Simulate water pressure over time. • Simulate water speed at the spigot over time. • Simulate water distance over time. • Simulate the farthest water height remaining over time. • Simulate the time needed for the water to flow out until reaching the spigot height. • Works seamlessly on both iPhone and iPad. • Lightweight, compact app optimized for everyday use. • Ad-free and built with privacy in mind. Torricelli's Theorem states that if a tank contains liquid and is open to the atmosphere at its top, and there is an orifice in the tank at a height h below the top of the liquid, then the speed of outflow from the orifice is √2gh, provided the liquid obeys Bernoulli's equation and the top of the liquid can be regarded as motionless. Torricelli's Theorem Formula: v = √2 * g * h where: v : Fluid Speed at the Orifice, in meters per second (m/s) h : Height of the Orifice from the Top, in meters (m) g : The acceleration due to gravity, 9.80665 m/s² Thanks for your support, and do visit nitrio.com for more apps for your iOS devices.

Screenshots

Fluid Pressure Drop4 screens
Torricelli4 screens

Verdict

The call

The clearest difference is update cadence: Fluid Pressure Drop at every 12 months against Torricelli's every 28 months. Torricelli's advantage is price ($2.99 vs $4.99). On ads, in-app purchases, device support and iOS requirement 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

Fluid Pressure Drop costs $4.99 and Torricelli $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fluid Pressure Drop ships an update every 12 months, Torricelli every 28 months. Both last shipped on October 30, 2026.

Scorecard2 real differences · 7 level
Fluid Pressure Drop versus Torricelli: the parameters behind the verdict, then further details
ParameterFluid Pressure DropTorricelli
Price$4.99$2.99 — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 12 months — betterEvery 28 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.313 — better
Further details — not scored
Size1 MB1 MB
Age rating4+4+
DeveloperKaup Shenoy AssociatesHeng Jia Liang

In-app purchases

None

Fluid Pressure Drop

No in-app purchases

None

Torricelli

No in-app purchases

Questions

Is Fluid Pressure Drop free?
Fluid Pressure Drop costs $4.99, with no in-app purchases.
Is Torricelli free?
Torricelli costs $2.99, with no in-app purchases.
Do Fluid Pressure Drop or Torricelli have ads?
Neither Fluid Pressure Drop nor Torricelli shows ads.
Which is updated more often, Fluid Pressure Drop or Torricelli?
Fluid Pressure Drop ships an update every 12 months, and Torricelli every 28 months. Most recently, Fluid Pressure Drop was updated on October 30, 2026 and Torricelli on October 30, 2026.

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