Comparison

Pressure Vessel Thickness Pro vs Bellows Design Software

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

Bellows Design Software

This application assists in designing metallic bellows type expansion joints according to EJMA Standards. It allows users to input various design parameters and movement inputs to ensure safe and reliable usage. The software performs comprehensive calculations and checks against EJMA conditions for different bellows configurations and materials.

Highlights
  • Design metallic bellows expansion joints
  • Input internal diameter, convolution height, ply thickness, pitch, and number of plies
  • Set design pressure, temperature, and movements
  • Check design parameters against EJMA Standards
  • Calculations for single and dual bellows
  • Includes vibration and bellows forming methods
  • Calculations for tie rods, lugs plate, and hinges
Read full description

Bellows Design Software is developed based on EJMA Standards 10th edition. Useful in designing Metallic Bellows type Expansion joints for safe and reliable usage. Select Internal Diameter of Bellows, Convolution Height, Ply thickness, Pitch and Number of Plies. Set Design Pressure and Temperature. Choose Bellows Materials,  Input Axial, Lateral and Angular Movements. Include Collar, Spool and Cycle Life and GO. App checks the design parameters with all set of Conditions to be met as per EJMA Standard. Calculations include Single, Dual Bellows with over a long list of Materials. Other Features : Includes Vibration, Bellows Forming Methods - ( in the creep range, above the creep range ) Calculations for Annealed Bellows. Set Factors - Weld Factor, Fatigue Safety Factor and Forming Method Factor Set Constants for Axial Vibration and Lateral Vibration. Separate Calculations for Tie Rods, Lugs Plate and Hinges are included. Terms of Use : https://sites.google.com/view/bellowsdesignsoftware Privacy Policy : https://sites.google.com/view/bellowsdesignsoftware

Screenshots

Pressure Vessel Thickness Pro4 screens
Bellows Design Software4 screens

Verdict

The call

The clearest difference is price: Bellows Design Software at Free against Pressure Vessel Thickness Pro's $3.99. Bellows Design Software also leads on rating (5.0 vs 1.0) and update cadence (monthly vs every 41 months). Pressure Vessel Thickness Pro's advantage is in-app purchases (none vs 2). On ratings volume, ads, device support and iOS requirement 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

Bellows Design Software is free to download; Pressure Vessel Thickness Pro costs $3.99 up front. Bellows Design Software sells 2 in-app purchases, starting at $34.99 per month. Pressure Vessel Thickness Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Bellows Design Software holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Pressure Vessel Thickness Pro ships an update every 41 months, Bellows Design Software monthly. Both last shipped on September 15, 2026.

Scorecard5 real differences · 5 level
Pressure Vessel Thickness Pro versus Bellows Design Software: the parameters behind the verdict, then further details
ParameterPressure Vessel Thickness ProBellows Design Software
Price$3.99Free — better
Rating1.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews
Number of ratings11
Update frequencyEvery 41 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.116.0 — better
Further details — not scored
Size1 MB26 MB
Age rating4+4+
DeveloperImran PinjaraV PUGAZHENTHI

Customer experience

Pressure Vessel Thickness Pro

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

Bellows Design Software

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

In-app purchases

None

Pressure Vessel Thickness Pro

No in-app purchases

2 purchases

Bellows Design Software

Subscriptions2
  • All Access for Bellows3 Days trial$34.991 Month
  • All Access for Bellows Design14 Days trial$299.991 Year

Questions

Is Pressure Vessel Thickness Pro free?
Pressure Vessel Thickness Pro costs $3.99, with no in-app purchases.
Is Bellows Design Software free?
Bellows Design Software is free to download, with in-app purchases available.
Which has better reviews, Pressure Vessel Thickness Pro or Bellows Design Software?
Bellows Design Software is rated higher. Pressure Vessel Thickness Pro averages 1.0 out of 5 from 1 ratings, while Bellows Design Software averages 5.0 from 1 ratings.
Do Pressure Vessel Thickness Pro or Bellows Design Software have ads?
Neither Pressure Vessel Thickness Pro nor Bellows Design Software shows ads.
Which is updated more often, Pressure Vessel Thickness Pro or Bellows Design Software?
Pressure Vessel Thickness Pro ships an update every 41 months, and Bellows Design Software monthly. Most recently, Pressure Vessel Thickness Pro was updated on September 15, 2026 and Bellows Design Software on September 15, 2026.

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