Comparison

Petal Layout Pro vs Easy Unit

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

Head to head
About

Petal Layout Pro

This app assists in the fabrication of spherical and hemispherical heads by calculating precise petal layouts. It supports various part divisions for accurate flat pattern development, ideal for pressure vessel and storage tank construction.

Highlights
  • Sphere petal layout calculation
  • Hemispherical head petal layout calculation
  • Multiple part divisions (12, 24, 48)
  • Unit setting for mm/inches
  • Flat pattern development
  • Supports pressure vessel fabrication
Features
Read full description

Petal Layout is a professional fabrication calculator for developing petal-type layouts for spheres and hemispherical heads. It is designed for pressure vessel fabrication, process equipment manufacturing, spherical tank fabrication, and industrial sheet metal work. The app generates fabrication-ready layout dimensions that can be used for marking plates or sheet metal before cutting, forming, and assembling spherical or hemispherical components. Whether you are a fabrication engineer, fitter, workshop technician, production engineer, or pressure vessel professional, Petal Layout helps simplify complex petal development calculations and improves accuracy during fabrication. Supported Petal Layouts • Hemispherical Head / Hemi Head • Hemispherical Dish End • Sphere / Spherical Tank Hemispherical Head Petal Layout Generate petal development dimensions for hemispherical pressure vessel heads and dish ends. Enter the required head diameter and straight face length, select the desired number of development divisions, and calculate the layout dimensions required for plate marking. Sphere Petal Layout Generate petal-type development dimensions for spherical tanks and spherical shells. Enter the sphere diameter and select the required number of divisions to generate the layout dimensions for fabrication. Development Options Choose from predefined development divisions: • 12 Parts • 24 Parts • 36 Parts • 48 Parts You can also enter a custom number of development divisions according to your fabrication requirements. Features • Sphere petal layout development • Hemispherical head petal development • Dish end petal layout • Spherical tank layout calculations • Multiple development division options • Custom development line/part count • Fabrication-ready marking dimensions • Clear and easy-to-understand results • Simple professional interface • Metric and Imperial unit support • No internet connection required Fabrication Applications Petal Layout is useful for: • Pressure Vessel Fabrication • Spherical Tank Fabrication • Process Equipment Fabrication • Storage Tank Manufacturing • Dish End Fabrication • Hemispherical Head Fabrication • Sheet Metal Fabrication • Industrial Fabrication • Plate Layout and Marking Designed For • Fabrication Engineers • Fabrication Fitters • Production Engineers • Mechanical Engineers • Workshop Technicians • Pressure Vessel Fabricators • Tank Fabricators • Process Equipment Manufacturers • Fabrication Supervisors • Engineering Students For improved fabrication accuracy, the app can be used with appropriate mean dimensions when developing and marking petal layouts. Petal Layout provides a convenient solution for generating sphere and hemispherical head petal development dimensions, helping reduce manual calculations, save fabrication time, and improve accuracy during plate layout and marking.

About

Easy Unit

This app simplifies unit conversions with a wide range of tools. Easily convert currencies, weights, measurements, and time with a user-friendly interface. It's designed for quick and accurate calculations.

Highlights
  • Currency conversion
  • Weight conversion
  • Feet and inches calculation
  • Hours calculation
  • Multiple unit types
Features
Read full description

Easy Unit makes everyday conversions quick and effortless. Enter a value once and see matching results across every unit in real time. Whether you're cooking, traveling, studying, shopping, or working, Easy Unit keeps the conversions you need close at hand. Why you'll love Easy Unit: • Instant conversions as you type • Hundreds of measurement units across popular categories • Currency conversion with refreshed exchange rates • Save favorite units for one-tap access • Browse your recent conversion history • Add a home-screen widget for quick access to your most-used categories • Reorder units to match the way you work • Copy individual values or share a complete conversion • Built-in calculator for quick calculations • Light, dark, and optional AMOLED-black themes • Support for multiple languages • Go ad-free anytime with a one-time purchase Conversion categories: Length, area, volume, time, temperature, speed, mass, currency, pressure, force, energy, power, torque, fuel consumption, digital data, angles, SI prefixes, numeral systems, and shoe sizes. From meters to miles, Celsius to Fahrenheit, liters to gallons, and bytes to gigabytes, Easy Unit gives you clear results without unnecessary steps.

Screenshots

Petal Layout Pro4 screens
Easy Unit4 screens

Verdict

The call

The clearest difference is price: Easy Unit at Free against Petal Layout Pro's $3.99. Easy Unit also leads on update cadence (every 3 weeks vs every 41 months). Petal Layout Pro's advantage is ads (none vs shown). On in-app purchases, 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

Easy Unit is free to download; Petal Layout Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Petal Layout Pro ships an update every 41 months, Easy Unit every 3 weeks. The most recent releases landed on September 15, 2026 and September 8, 2026 respectively.

Scorecard4 real differences · 6 level
Petal Layout Pro versus Easy Unit: the parameters behind the verdict, then further details
ParameterPetal Layout ProEasy Unit
Price$3.99Free — better
Rating—4.8 (19 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings—19 — better
Update frequencyEvery 41 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.115.6 — better
Further details — not scored
Size1 MB27 MB
Age rating4+4+
DeveloperImran PinjaraAPPS BAY LIMITED

Customer experience

Petal Layout Pro

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

Easy Unit

All ratings19 ratings
Positive94.7%
Neutral5.3%
Negative0.0%

In-app purchases

None

Petal Layout Pro

No in-app purchases

None

Easy Unit

No in-app purchases

Questions

Is Petal Layout Pro free?
Petal Layout Pro costs $3.99, with no in-app purchases.
Is Easy Unit free?
Easy Unit is free to download, with no in-app purchases.
Do Petal Layout Pro or Easy Unit have ads?
Easy Unit shows ads; Petal Layout Pro does not.
Which is updated more often, Petal Layout Pro or Easy Unit?
Petal Layout Pro ships an update every 41 months, and Easy Unit every 3 weeks. Most recently, Petal Layout Pro was updated on September 15, 2026 and Easy Unit on September 8, 2026.

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