Comparison

Pressure Vessel Thickness Pro vs Vector Calculator Plus

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

Head to head
About

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.

Highlights
  • Shell thickness calculation
  • Head thickness calculation (Hemi, Tori, Ellipsoidal)
  • Cone thickness calculation
  • ASME Section VIII Div 1 compliance
  • Offline functionality
  • High performance
Features
Read 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.

About

Vector Calculator Plus

This app simplifies vector addition for students and educators. It allows for quick calculations of multiple vectors, visualizing the results with generated graphs. Users can customize graph elements and save images for later use.

Highlights
  • Instant vector calculation
  • Add multiple vectors by x, y, magnitude, or angle
  • Generate vector images
  • Save vector images to camera roll
  • Customize graph display options
  • Set background color for graphs
Features
Read full description

Vector Calculator is math calculator to find vector addition fast and easy. Vector Calculator give operation of adding two or more vectors together into a vector sum. The parallelogram law gives the rule for vector addition of two or more vectors. Features: • Instant vector calculation. • Add multiple vector by x, y, magnitude or angle. • Vector Image is generated upon calculation. • Save Vector Image into camera roll. • Option to show/hide Grid, Indicator, Label, Vector Label or Magnitude Label for Vector Graph. • Option to enable/disable Background for Vector Graph. • Option to set Background Colour for Vector Graph. A Vector has magnitude [size] and direction. No matter which order you add them, you will get the same result. Magnitude of a Vector: The magnitude of a vector is shown by two vertical bars on either side of the vector |a| Adding Vectors: Vectors can add by adding the x parts and adding the y parts: Example: add the vectors a = (2,3) and b = (4,5) |a+b| = |a| + |b| |a+b| = (2,3) + (4,5) = (2+4,3+5) = (6,8) Common examples of vectors are force and velocity. Both force and velocity are in a particular direction. The magnitude of the vector would indicate the strength of the force or the speed associated with the velocity. Vector Calculator is useful for math teachers, educator, or anyone who want to prepare vector math material for teaching. Also for students who need to learn more detail or understanding of math vector addition operation. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

Screenshots

Pressure Vessel Thickness Pro4 screens
Vector Calculator Plus4 screens

Verdict

The call

The clearest difference is rating: Vector Calculator Plus at 2.5 against Pressure Vessel Thickness Pro's 1.0. Vector Calculator Plus also leads on price ($2.99 vs $3.99) and iOS requirement (13 vs 16.1). On review sentiment, ratings volume, update cadence and ads 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

Pressure Vessel Thickness Pro costs $3.99 and Vector Calculator Plus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Vector Calculator Plus holds the better App Store score, 2.5 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

Pressure Vessel Thickness Pro ships an update every 41 months, Vector Calculator Plus every 43 months. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Pressure Vessel Thickness Pro versus Vector Calculator Plus: the parameters behind the verdict, then further details
ParameterPressure Vessel Thickness ProVector Calculator Plus
Price$3.99$2.99 — better
Rating1.0 (1 ratings)2.5 (2 ratings) — better
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings12 — better
Update frequencyEvery 41 months — betterEvery 43 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.113 — better
Further details — not scored
Size1 MB1 MB
Age rating4+4+
DeveloperImran PinjaraHeng Jia Liang

Customer experience

Pressure Vessel Thickness Pro

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Vector Calculator Plus

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Pressure Vessel Thickness Pro

No in-app purchases

None

Vector Calculator Plus

No in-app purchases

Questions

Is Pressure Vessel Thickness Pro free?
Pressure Vessel Thickness Pro costs $3.99, with no in-app purchases.
Is Vector Calculator Plus free?
Vector Calculator Plus costs $2.99, with no in-app purchases.
Which has better reviews, Pressure Vessel Thickness Pro or Vector Calculator Plus?
Vector Calculator Plus is rated higher. Pressure Vessel Thickness Pro averages 1.0 out of 5 from 1 ratings, while Vector Calculator Plus averages 2.5 from 2 ratings.
Do Pressure Vessel Thickness Pro or Vector Calculator Plus have ads?
Neither Pressure Vessel Thickness Pro nor Vector Calculator Plus shows ads.
Which is updated more often, Pressure Vessel Thickness Pro or Vector Calculator Plus?
Pressure Vessel Thickness Pro ships an update every 41 months, and Vector Calculator Plus every 43 months. Most recently, Pressure Vessel Thickness Pro was updated on October 17, 2026 and Vector Calculator Plus on October 24, 2026.

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