Flow Rate Conversion vs Flow Rate Help
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flow Rate Conversion
Easily convert between various units of flow rate, including volume-based, mass-based, and mole-based measurements. Essential for physics and engineering applications involving fluid dynamics and hydrometry.
- Volume flow rate conversion
- Mass flow rate conversion
- Mole-based flow rate conversion
- Physics and engineering utility
- Fluid dynamics calculations
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Flow Rate Conversion - Easily convert between various units of flow rate, whether it's volume-based, mass-based, or mole-based. In the realms of physics and engineering, especially in the domains of fluid dynamics and hydrometry, volumetric flow rate (also referred to as volume flow rate, fluid flow rate, or volume velocity) signifies the volume of fluid that traverses a given point per unit of time. It's typically denoted by the symbol Q, with the SI unit being m³/s (cubic meters per second). Another unit occasionally used is sccm (standard cubic centimeters per minute). In physics and engineering, mass flow rate represents the mass of a substance passing through a point per unit of time. It's measured in kilograms per second in SI units and in slug per second or pound per second in US customary units. The common symbol is ṁ (pronounced "m-dot"), although sometimes μ (Greek lowercase mu) is employed. Occasionally, mass flow rate is referred to as mass flux or mass current, as seen, for instance, in Fluid Mechanics, Schaum's, and other references. In this article, we adopt the more intuitive definition. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
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
Screenshots
Verdict
The clearest difference is rating: Flow Rate Help at 4.3 against Flow Rate Conversion's 3.0. Flow Rate Help also leads on ratings volume (44 vs 1) and price ($0.99 vs $2.99). 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
Flow Rate Conversion costs $2.99 and Flow Rate Help $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Flow Rate Help holds the better App Store score, 4.3 against 3.0. 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. Written reviews split almost evenly too, at 0% and 0% positive.
Flow Rate Conversion ships an update every 29 months, Flow Rate Help every 15 months. The most recent releases landed on September 13, 2026 and August 6, 2026 respectively.
| Parameter | Flow Rate Conversion | Flow Rate Help |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 3.0 (1 ratings) | 4.3 (44 ratings) — better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 1 | 44 — better |
| Update frequency | Every 29 months | Every 15 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 13 | 11.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | Armchair Engineering |
Customer experience
Flow Rate Conversion
Flow Rate Help
In-app purchases
Flow Rate Conversion
No in-app purchases
Flow Rate Help
No in-app purchases
Questions
Is Flow Rate Conversion free?
Is Flow Rate Help free?
Which has better reviews, Flow Rate Conversion or Flow Rate Help?
Do Flow Rate Conversion or Flow Rate Help have ads?
Which is updated more often, Flow Rate Conversion or Flow Rate Help?
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