Comparison

Flow Rate Help vs Hydrostatic Pressure 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

Hydrostatic Pressure Calc

Quickly calculate hydrostatic pressure at any depth with this physics tool. It offers instant results, supports various units, and displays the relevant formulas for reference. Optimized for ease of use and accuracy.

Highlights
  • Instant hydrostatic pressure calculation
  • Supports multiple input units
  • Includes hydrostatic pressure formulas
  • Results are copyable
  • High precision up to 16 decimal places
  • Lightweight and optimized
Features
Read full description

Hydrostatic Pressure Calculator is a physics/math calculator used to find hydrostatic pressure at a certain depth quickly and easily. Features: - Instant calculation - Results are copyable to other apps - Formulas are included as references - Supports up to 16 decimal places - Supports various units for each input - Lightweight app with a small size, optimized for everyday use Hydrostatic Pressure is the pressure exerted by a fluid at equilibrium at a given point within the fluid, due to the force of gravity. Hydrostatic pressure increases in proportion to depth measured from the surface because of the increasing weight of fluid exerting downward force from above. Each particle of a liquid is subjected to a gravitational force directed towards the Earth. The deeper it is located, the more particles are above it, resulting in higher fluid pressure. The value of hydrostatic pressure does not depend on the size and shape of the tank, but only on the depth. Therefore, the same hydrostatic pressure will be present in a huge swimming pool and a thin pipe, provided they have the same height. Hydrostatic pressure formula: p = ρ * g * h where: p - hydrostatic pressure ρ - density of fluid g - gravitational acceleration (the average value for Earth is g = 9.80655 m/s²) h - depth Thank you for your support, and feel free to visit nitrio.com for more apps for your iOS devices.

Screenshots

Flow Rate Help3 screens
Hydrostatic Pressure Calc4 screens

Verdict

The call

The clearest difference is rating: Hydrostatic Pressure Calc at 5.0 against Flow Rate Help's 4.3. Flow Rate Help's advantage is ratings volume (44 vs 1) and update cadence (every 15 months vs every 31 months). On ads, in-app purchases, monetization model 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

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

ReceptionRating · Positive reviews · Number of ratings

Hydrostatic Pressure Calc holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Flow Rate Help has 44 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Flow Rate Help ships an update every 15 months, Hydrostatic Pressure Calc every 31 months. The most recent releases landed on August 6, 2026 and June 25, 2026 respectively.

Scorecard5 real differences · 5 level
Flow Rate Help versus Hydrostatic Pressure Calc: the parameters behind the verdict, then further details
ParameterFlow Rate HelpHydrostatic Pressure Calc
Price$0.99 — better$2.99
Rating4.3 (44 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings44 — better1
Update frequencyEvery 15 months — betterEvery 31 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 EngineeringTan Chia Ling

Customer experience

Flow Rate Help

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

Hydrostatic Pressure Calc

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Flow Rate Help

No in-app purchases

None

Hydrostatic Pressure Calc

No in-app purchases

Questions

Is Flow Rate Help free?
Flow Rate Help costs $0.99, with no in-app purchases.
Is Hydrostatic Pressure Calc free?
Hydrostatic Pressure Calc costs $2.99, with no in-app purchases.
Which has better reviews, Flow Rate Help or Hydrostatic Pressure Calc?
Hydrostatic Pressure Calc is rated higher. Flow Rate Help averages 4.3 out of 5 from 44 ratings, while Hydrostatic Pressure Calc averages 5.0 from 1 ratings.
Do Flow Rate Help or Hydrostatic Pressure Calc have ads?
Neither Flow Rate Help nor Hydrostatic Pressure Calc shows ads.
Which is updated more often, Flow Rate Help or Hydrostatic Pressure Calc?
Flow Rate Help ships an update every 15 months, and Hydrostatic Pressure Calc every 31 months. Most recently, Flow Rate Help was updated on August 6, 2026 and Hydrostatic Pressure Calc on June 25, 2026.

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