Flow Rate Help vs Pressure Vessel Thickness Pro
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
Read full descriptionHide 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
Pressure Vessel Thickness Pro
Calculate the required design and nominal thickness for various pressure vessel components, including shells, heads, and cones, according to ASME Section VIII Div 1 codes. This offline tool offers high performance for engineers in process equipment manufacturing.
- Shell thickness calculation
- Head thickness calculation (Hemi, Tori, Ellipsoidal)
- Cone thickness calculation
- ASME Section VIII Div 1 compliance
- Offline functionality
- High performance
Read full descriptionHide full description
Pressure Vessel Thickness Calculator is a professional engineering tool for calculating required pressure vessel component thickness for internal pressure applications. It is designed for pressure vessel engineers, mechanical engineers, process equipment designers, and engineering professionals who need quick thickness calculations and design verification. The app provides calculations for pressure vessel shells, heads, and conical components using applicable formulas based on ASME Section VIII Division 1 requirements. It is useful during preliminary design, engineering calculations, equipment evaluation, and quick verification of pressure vessel thickness. Available Thickness Calculators • Shell Thickness Calculator • Hemispherical Head Thickness Calculator • Torispherical Head Thickness Calculator • 2:1 Ellipsoidal Head Thickness Calculator • Conical Shell Thickness Calculator Shell Thickness Calculate required shell thickness for cylindrical pressure vessel components subjected to internal pressure. Useful for preliminary pressure vessel design and checking required wall thickness based on the applicable design parameters. Hemispherical Head Thickness Calculate required thickness for hemispherical pressure vessel heads under internal pressure conditions. Torispherical Head Thickness Calculate required thickness for torispherical pressure vessel heads using the applicable design parameters and calculation formula. 2:1 Ellipsoidal Head Thickness Calculate required thickness for commonly used 2:1 ellipsoidal pressure vessel heads. Conical Shell Thickness Calculate required thickness for conical pressure vessel sections subjected to internal pressure. Design & Nominal Thickness The application can assist with determining required design thickness and estimating nominal thickness by considering the relevant design inputs and allowances used in the calculation. Features • Pressure vessel shell thickness calculation • Pressure vessel head thickness calculation • Hemispherical head calculation • Torispherical head calculation • 2:1 ellipsoidal head calculation • Conical shell thickness calculation • Internal pressure design calculations • Design thickness calculation • Nominal thickness estimation • ASME Section VIII Division 1 based formulas • Metric and Imperial unit support • Automatic unit conversion • Clear engineering results • Fast calculations • Simple professional interface • No internet connection required • No distracting advertisements Applications Pressure Vessel Thickness Calculator is useful for: • Pressure Vessel Design • Process Equipment Design • Pressure Vessel Fabrication • Heat Exchanger Design • Reactor Design • Column and Tower Design • Storage Tank Engineering • Industrial Equipment Design • Mechanical Engineering • Engineering Design Verification Designed For • Pressure Vessel Engineers • Mechanical Engineers • Design Engineers • Process Engineers • Fabrication Engineers • Equipment Designers • Project Engineers • Engineering Consultants • QA/QC Professionals • Engineering Students Pressure Vessel Thickness Calculator provides a convenient way to perform common pressure vessel thickness calculations and quickly review required component thickness during engineering and design work. Whether you are checking a cylindrical shell, hemispherical head, torispherical head, 2:1 ellipsoidal head, or conical section, the app provides a practical calculation tool for pressure vessel and process equipment engineering. Important: Results should be independently verified by a qualified engineer and against the applicable edition, requirements, material properties, design conditions, and other provisions of the governing design code before being used for final pressure vessel design or fabrication.
Screenshots
Verdict
The clearest difference is rating: Flow Rate Help at 4.3 against Pressure Vessel Thickness Pro's 1.0. Flow Rate Help also leads on ratings volume (44 vs 1) and update cadence (every 15 months vs every 41 months). On review sentiment, ads, in-app purchases and monetization model 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 Pressure Vessel Thickness Pro $3.99 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 1.0. 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 Help ships an update every 15 months, Pressure Vessel Thickness Pro every 41 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.
| Parameter | Flow Rate Help | Pressure Vessel Thickness Pro |
|---|---|---|
| Price | $0.99 — better | $3.99 |
| Rating | 4.3 (44 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 44 — better | 1 |
| Update frequency | Every 15 months — better | Every 41 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.1 |
| Further details — not scored | ||
| Size | 3 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Armchair Engineering | Imran Pinjara |
Customer experience
Flow Rate Help
Pressure Vessel Thickness Pro
In-app purchases
Flow Rate Help
No in-app purchases
Pressure Vessel Thickness Pro
No in-app purchases
Questions
Is Flow Rate Help free?
Is Pressure Vessel Thickness Pro free?
Which has better reviews, Flow Rate Help or Pressure Vessel Thickness Pro?
Do Flow Rate Help or Pressure Vessel Thickness Pro have ads?
Which is updated more often, Flow Rate Help or Pressure Vessel Thickness Pro?
Other comparisons















