Comparison

Petal Layout vs Chippy Tools

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

Head to head
About

Petal Layout

Features
Read full description

This app calculates Sphere, Hemispherical Head or Hemi Head, Dish End Petal type layout Development required in plate or sheet metal lay-outing used for fabrication. it is also called Flat pattern development of Sphere or Hemispherical Heads. This app used for petal lay-outing of Vessels End Caps. it is used in spherical type storage tank fabrication. it is used in heads or dish ends or vessel cap fabrication of pressure vessels. It is recommended to used mean dimensions for lay-outing for higher accuracy and ready to used fabrication layouts. In this app we had following shapes Petal Layout Developments: 1. Hemispherical Head 2. Sphere we had provided three options for petal lay-outing as 12 parts layout, 24 part layouts, 48 part layouts. Hemi Head Petal Layout : In this Petal Lay-outing option we can layout for Hemispherical Dish end or Vessels Cap Petal layout Development required for fabrication of Pressure vessels heads or vessel end cap. in this layout we required input dimension as head or Dish end Diameter in mm and Straight Face in mm. We have 12 parts, 24 parts, 48 parts options for petal layout development. In Out put of this we will get all dimension required for fabrication layout marking. Sphere Petal layout : In Sphere Petal Lay-outing We can calculate dimension required for fabrication lay-outing of Sphere fabrication. In sphere type layout you need to enter input dimension as Diameter in mm and after selecting 12 parts, 24 parts, 48 part layout option for generate fabrication layout dimensions. This application best suited for Petal type layout development of sphere or hemispherical Dish ends. It is used in Storage tank fabrication Pressure Vessels fabrication. This is very helpful for Fabrication Fitter, Fabrication Engineer, Production Engineer or any other working professional in the field of Process equipment's fabrication. Key words : Petal type layouts, Sphere Fabrication, Hemi Dish End, Dish End, Vessels End Cap, Pressure Vessels Fabrication, Petal Fabrications, Sphere Layout, Fabrication, Process Equipments, Flat Pattern Layout.

About

Chippy Tools

This app simplifies complex calculations for construction professionals. It offers a variety of tools for tasks like spacing, measurements, and material estimation, helping to reduce errors and save time on job sites. Available on iPhone and iPad, it aims to be an essential tool for tradespeople.

Highlights
  • Baluster spacing calculator
  • Flat run attached baluster calculator
  • Square calculator
  • Concrete calculator
  • Stair calculator
  • Supports millimeters, feet, and inches
Features
Read full description

Chippy Tools is the must-have calculator for carpenters and handy folks looking to simplify math on the job. Whether you're on your iPhone or iPad, Chippy Tools is for you. Its user-friendly design lets you focus on carpentry while the app handles the math. Perfect for architects, builders, carpenters, construction workers, contractors, designers, engineers, tradespeople, and woodworkers of all kinds, Chippy Tools speeds up common calculations with precision. Save time and cut costs by reducing site errors. WHAT IS A CHIPPY? In Australia, carpenters are often called Chippy. WHY CHIPPY TOOLS? Our mission at Chippy Tools is to redefine top-notch apps for carpenters. We aim to develop a sustainable business model, adding new calculations to keep saving you time and money. FEATURES • Baluster spacing calculator - Quickly calculate spacing for flat runs. • Flat run attached baluster calculator - Simple, fast calculations for attached balusters. • Supports millimeters, feet, and inches. PREMIUM FEATURES (Requires Subscription) • Square calculator - Ensure structures are perfectly square. • Concrete calculator - Calculate concrete needed for slabs and posts. • Dumpy level calculator - Find relative level from benchmarks. • Equal spacing calculator - Calculate even spacing effortlessly. • Gravel calculator - Determine gravel volume needed. • Pitch calculator - Calculate pitch with rise and run. • Raked wall calculator - Measure raked walls using height or pitch. • Running calculations - Enter start number and interval. • Soil calculator - Find soil volume for landscaping. • Stair calculator - Calculate going, stringer, and rise for stairs. • Triangle calculator - Solve triangle measurements with ease. FEEDBACK Want a new calculator? Email us at feedback@chippy.tools. NO ADS EVER We promise no ads in Chippy Tools. Enjoy the best experience for your purchase. SUPPORT Got questions or feedback? Contact us for free tech support at support@chippy.tools. If Chippy Tools aids you, please leave an App Store review to help others find it. Subscription Terms of Service: https://chippy.tools/terms/ Proudly made in Brisbane, Australia.

Screenshots

Petal Layout4 screens
Chippy Tools4 screens

Verdict

The call

The clearest difference is price: Chippy Tools at Free against Petal Layout's $2.99. Chippy Tools also leads on update cadence (every 8 days vs every 56 months). Petal Layout's advantage is in-app purchases (none vs 10). On 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

Chippy Tools is free to download; Petal Layout costs $2.99 up front. Chippy Tools sells 9 in-app purchases, starting at $2.99 per 7 days. Petal Layout asks for nothing beyond the download.

UpkeepUpdate frequency

Petal Layout ships an update every 56 months, Chippy Tools every 8 days. The most recent releases landed on September 15, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 7 level
Petal Layout versus Chippy Tools: the parameters behind the verdict, then further details
ParameterPetal LayoutChippy Tools
Price$2.99Free — better
Rating—4.5 (905 ratings) — better
Positive reviews—55.2% of reviews
Number of ratings—905 — better
Update frequencyEvery 56 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.116.0 — better
Further details — not scored
Size1 MB46 MB
Age rating4+4+
DeveloperImran PinjaraPeth Pty Ltd

Bugs and requests

Petal Layout

Not enough reviews yet to summarise bugs or requests.

Chippy Tools

Reported bugs

2 issues
  • Square check feature not working
  • Measurements disappear after partial use

Requested features

4 requests
  • Add more construction-related calculators
  • Improve stair and rafter tools
  • Include material quantity estimations
  • Add support for metric and imperial units

In-app purchases

None

Petal Layout

No in-app purchases

9 purchases

Chippy Tools

Subscriptions8
  • Chippy Tools Pro - Weekly1 Month trial$2.997 Days
  • Chippy Tools Pro - Weekly3 Days trial$3.997 Days
  • Chippy Tools Pro - Quarterly3 Months trial$4.993 Months
Show 5 more
  • Chippy Tools Pro - Monthly$5.991 Month
  • Chippy Tools Pro - Monthly1 Month trial$5.991 Month
  • Chippy Tools Pro - Annual3 Days trial$19.991 Year
  • Chippy Tools Pro - Annual1 Year trial$19.991 Year
  • Chippy Tools Pro - Annual$19.991 Year
One-time1
  • One Time Purchase2 variants$85.00

Questions

Is Petal Layout free?
Petal Layout costs $2.99, with no in-app purchases.
Is Chippy Tools free?
Chippy Tools is free to download, with in-app purchases available.
Do Petal Layout or Chippy Tools have ads?
Neither Petal Layout nor Chippy Tools shows ads.
Which is updated more often, Petal Layout or Chippy Tools?
Petal Layout ships an update every 56 months, and Chippy Tools every 8 days. Most recently, Petal Layout was updated on September 15, 2026 and Chippy Tools on September 29, 2026.

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