Comparison

Silverson Conversion Tools vs Pressure Vessel Heads

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

Head to head
About

Silverson Conversion Tools

This app provides engineers and operations personnel with tools to calculate the volume of vertical tanks of various shapes and top/bottom styles. It also includes multiple conversion tools for common measurements and a browser for product information.

Highlights
  • Vertical tank volume calculation
  • Multiple tank shapes and top/bottom styles
  • Unit conversion tools
  • Email/Share calculation results
  • Integrated product browser
Features
Read full description

This versatile set of calculating tools from Silverson Machines is a handy reference app for engineers and operations personnel allowing you to calculate the volume of any vertical tank based on parameters you choose. Choose from the following: Vertical Tank Shapes: • Cylindrical • Rectangular Top and Bottom Styles: • Flat • Dished • Spherical • Conical Silverson’s app even allows you to Email/Share your volume calculation results and includes a browser for viewing Silverson product lines and website. In addition there are multiple conversion tools for the following measurements: • Length • Fine Measurement • Flow • Motor Power • Pressure • Temperature • Volume • Weight

About

Pressure Vessel Heads

Calculate dimensions for various pressure vessel heads, including flat, torispherical, ellipsoidal, and hemispherical types. It provides detailed calculations for blank diameter, crown radius, knuckle radius, and height, with options for template layout marking. Input dimensions are in millimeters.

Highlights
  • Calculate blank diameter
  • Calculate crown radius
  • Calculate knuckle radius
  • Support for flat heads
  • Support for torispherical heads
  • Support for ellipsoidal heads
  • Support for hemispherical heads
  • Template layout marking for 2:1 ellipsoidal heads
Features
Read full description

This app is very helpful for Calculation of Blank Diameter, Crown Radius, Knuckle Radius,Height and other Related Terms of Various Types of Vessel heads such as Flat Head, Torispherical Head, ellipsoidal head and Hemispherical Head. This app is designed for following Heads. 1. Flat Heads 2. 10% Torispherical head or dish Ends. 3. 2: 1 Ellipsoidal head or Dish Ends. 4. Hemispherical heads. 5. 2:1 Ellipsoidal Dish End Template Layout Marking This App also Calculate Crown Radius, Knuckle Radius, Height without SF, Height with SF etc. in this app 2:1 ellipsoidal Head Template Layout Marking is Calculate with options of lay-outing in 12 Parts, 24 Parts, 36 Parts, 48 Parts, 72 Parts or you can Put any No of Parts in development lines. its Generate X and Y Coordinates for Layout. all dimensional input Should be required in MM or Metric System. Blank Diameter calculated by This Tool is for Estimation and costing purpose, so while Cutting Blank size of the above Dish End please consult with your head manufacture for desired Accuracy. this tool is helful for those who are working in fabrication of Process Equipments.

Screenshots

Silverson Conversion Tools1 screens
Pressure Vessel Heads4 screens

Verdict

The call

The clearest difference is price: Silverson Conversion Tools at Free against Pressure Vessel Heads's $2.99. Silverson Conversion Tools also leads on update cadence (every 6 months vs every 56 months) and iOS requirement (8.0 vs 16.1). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Silverson Conversion Tools is free to download; Pressure Vessel Heads costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Silverson Conversion Tools ships an update every 6 months, Pressure Vessel Heads every 56 months. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

Scorecard4 real differences · 6 level
Silverson Conversion Tools versus Pressure Vessel Heads: the parameters behind the verdict, then further details
ParameterSilverson Conversion ToolsPressure Vessel Heads
PriceFree — better$2.99
Rating4.7 (3 ratings) — better—
Positive reviews—0.0% of reviews
Number of ratings3 — better—
Update frequencyEvery 6 months — betterEvery 56 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPodiPhone, iPad
Requires iOS8.0 — better16.1
Further details — not scored
Size9 MB1 MB
Age rating4+4+
DeveloperSilverson Machines LimitedImran Pinjara

Customer experience

Silverson Conversion Tools

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Pressure Vessel Heads

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Silverson Conversion Tools

No in-app purchases

None

Pressure Vessel Heads

No in-app purchases

Questions

Is Silverson Conversion Tools free?
Silverson Conversion Tools is free to download, with no in-app purchases.
Is Pressure Vessel Heads free?
Pressure Vessel Heads costs $2.99, with no in-app purchases.
Do Silverson Conversion Tools or Pressure Vessel Heads have ads?
Neither Silverson Conversion Tools nor Pressure Vessel Heads shows ads.
Which is updated more often, Silverson Conversion Tools or Pressure Vessel Heads?
Silverson Conversion Tools ships an update every 6 months, and Pressure Vessel Heads every 56 months. Most recently, Silverson Conversion Tools was updated on October 23, 2026 and Pressure Vessel Heads on October 17, 2026.

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