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.
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.
- Solve flow rate equations
- Customizable diameter units
- Customizable velocity units
- Customizable flow rate units
- Set decimal places
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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
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | Flow Rate Help | Hydrostatic Pressure Calc |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | 4.3 (44 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 44 — better | 1 |
| Update frequency | Every 15 months — better | Every 31 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13 |
| Further details — not scored | ||
| Size | 3 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Armchair Engineering | Tan Chia Ling |
Customer experience
Flow Rate Help
Hydrostatic Pressure Calc
In-app purchases
Flow Rate Help
No in-app purchases
Hydrostatic Pressure Calc
No in-app purchases
Questions
Is Flow Rate Help free?
Is Hydrostatic Pressure Calc free?
Which has better reviews, Flow Rate Help or Hydrostatic Pressure Calc?
Do Flow Rate Help or Hydrostatic Pressure Calc have ads?
Which is updated more often, Flow Rate Help or Hydrostatic Pressure Calc?
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