Comparison

Pressure Vessel Heads. vs Process Engineer Calc

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

Head to head
About

Pressure Vessel Heads.

Features
Read full description

Pressure Vessel Heads is a specialized engineering calculator designed to help professionals determine key dimensions and parameters for various pressure vessel head types. It is ideal for mechanical engineers, designers, students, and fabrication experts. The app simplifies complex calculations and provides fast, accurate results through an intuitive interface, making it useful for both field reference and design work. Key Features: Calculate dimensions for common vessel head types Useful for fabrication and engineering applications Clear inputs and precise outputs Helps reduce manual calculation effort Simple and practical user interface Pressure Vessel Heads is a reliable companion for anyone involved in pressure vessel design, manufacturing, or study. in-app purchase included 
 Lifetime to unlock all calculation and remove ads Privacy Policy : https://docs.google.com/document/d/1Dn1gNdDP2AHL7sg-px4rxdLAcoGHlNB8/edit#heading=h.1ionsc3v3xmq Terms and Condition : https://docs.google.com/document/d/1t-LREPKByKaM0UkbIo4o0E1gdAYs21Oe30EfGxenEss/edit?usp=sharing

About

Process Engineer Calc

Features
Read full description

ProcessCalc is an ad-free, offline-ready utility app designed specifically for chemical engineers, extraction technicians, and laboratory researchers. Whether you are scaling up a synthesis from bench to pilot scale, optimizing solvent recovery, or sizing a chiller for your jacketed reactor, this app provides 10 specialized engineering calculators to streamline your daily workflow. Key Calculators Included: • Solvent Recovery: Estimate evaporation rates and recovery times. • Chiller Sizing: Calculate required cooling capacity (kW) and tonnage. • Biomass Capacity & Yield: Optimize loading and predict expected yields. • Scale-up Predictor: Lab to production volume and flow rate scaling. • Condenser Area: Determine required heat transfer area. • Vapor Velocity: Avoid flooding in vacuum systems with min-ID calculations. • Pump Flow Rate: Quick displacement to LPM/LPH conversions. • Scaling Risk Predictor: Assess system scaling and maintenance needs. • Vacuum Diagnostic: Calculate rate-of-rise and system leak rates. • Compliance Map: Quick reference for global hemp/CBD regulations. App Features: Zero Ads: No pop-ups, no tracking, no subscriptions. Offline First: Works instantly in the lab or extraction facility where internet might be spotty. Favorites: Star your most-used tools for one-tap access. Practical: Built around real-world formulas used in extraction and chemical processing facilities. Designed by engineers, for engineers.

Screenshots

Pressure Vessel Heads.4 screens
Process Engineer Calc4 screens

Verdict

The call

The clearest difference is in-app purchases: Process Engineer Calc at none against Pressure Vessel Heads.'s 1. Process Engineer Calc also leads on update cadence (every 10 days vs every 2 months). Pressure Vessel Heads.'s advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price 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

Both are free to download. Pressure Vessel Heads. sells 1 one-off in-app purchase. Process Engineer Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Pressure Vessel Heads. ships an update every 2 months, Process Engineer Calc every 10 days. The most recent releases landed on July 23, 2026 and September 12, 2026 respectively.

Scorecard4 real differences · 2 level
Pressure Vessel Heads. versus Process Engineer Calc: the parameters behind the verdict, then further details
ParameterPressure Vessel Heads.Process Engineer Calc
PriceFreeFree
Update frequencyEvery 2 monthsEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size55 MB11 MB
Age rating4+4+
DeveloperNanjibhai Gorasiya冯泰 蔡

In-app purchases

1 purchases

Pressure Vessel Heads.

One-time1
  • Lifetime premium$12.99
None

Process Engineer Calc

No in-app purchases

Questions

Is Pressure Vessel Heads. free?
Pressure Vessel Heads. is free to download, with in-app purchases available.
Is Process Engineer Calc free?
Process Engineer Calc is free to download, with no in-app purchases.
Do Pressure Vessel Heads. or Process Engineer Calc have ads?
Neither Pressure Vessel Heads. nor Process Engineer Calc shows ads.
Which is updated more often, Pressure Vessel Heads. or Process Engineer Calc?
Pressure Vessel Heads. ships an update every 2 months, and Process Engineer Calc every 10 days. Most recently, Pressure Vessel Heads. was updated on July 23, 2026 and Process Engineer Calc on September 12, 2026.

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