Comparison

Flat Metal Patterns vs Diameter Finder

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

Head to head
About

Flat Metal Patterns

This app simplifies metal pattern creation with precise mathematical calculations, saving time and reducing errors compared to manual methods. It offers various pattern types, unit conversions, and smart calculation features for both experienced professionals and beginners.

Highlights
  • Automated pattern calculation
  • 20+ different pattern types
  • Diameter-Circumference conversion
  • Pipe and insulation reference tables
  • Smart calculator for fractions/decimals
  • Scale feature for large patterns
Read full description

Flat Metal Patterns is a metal pattern calculation program that helps us save time making the pattern and avoids possible errors that we may have when drawing the pattern by hand. You can also find products, tools and accessories online for the branch of industrial insulation. This application is aimed at experts, inexperienced and beginners; within the application you can find video tutorials that will guide you through the process of how to use the calculated pattern. For people who are experienced in tracing a pattern by hand, it will help them to avoid mistakes, calculate the pattern in seconds, and thus save time. The pattern calculation program is made based on mathematical calculations and converting those calculations into the pattern that we are used to work with. Inside you can find up to 20 different patterns, as well as Diameter - Circumference calculation, Pipe - Insulation reference tables and a length units calculator. Circumference-Diameter - The application works mainly with circumference values. Additionally, the application accepts diameter values that are converted to circumference. Pipe size - If you have the exact data of a pipe, the application has the ability to determine the exact circumference of the pipe. Smart calculator - Extremely important for specific operations on known fractions and decimals. This means that the calculator accepts the fractions of a conventional tape measure, and returns the results in the same way. Scale - An extremely important feature of the application that makes it easy for us to manufacture large-size patterns in parts. Terms of use: https://flatmetalpatterns.com/terms-and-conditions/

About

Diameter Finder

This utility app provides a straightforward way to calculate circle properties. Simply input one known value (radius, diameter, circumference, or area) to instantly get the results for the others. It's designed for quick and no-fuss calculations.

Highlights
  • Calculate radius
  • Calculate diameter
  • Calculate circumference
  • Calculate area
  • Input any single value
  • Quick results
Features
Read full description

Diameter Finder - Circle Calculator. Do you need a quick and easy to use circle calculator? No problem, here it is. Enter one value to get the result in no time: Radius Diameter Circumference Area No fuss calculator. Does what it says on the tin.

Screenshots

Flat Metal Patterns4 screens
Diameter Finder4 screens

Verdict

The call

The clearest difference is rating: Diameter Finder at 5.0 against Flat Metal Patterns's 4.4. Diameter Finder also leads on in-app purchases (none vs 3) and review sentiment (100% vs 83%). Flat Metal Patterns's advantage is update cadence (every 5 weeks vs every 5 months) and ratings volume (27 vs 1). On price, 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

Both are free to download. Flat Metal Patterns sells 3 in-app purchases, starting at $7.99 per month. Diameter Finder asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Diameter Finder holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Flat Metal Patterns has 27 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 83% of Flat Metal Patterns's written reviews are positive against 100% of Diameter Finder's.

UpkeepUpdate frequency

Flat Metal Patterns ships an update every 5 weeks, Diameter Finder every 5 months. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

Scorecard6 real differences · 4 level
Flat Metal Patterns versus Diameter Finder: the parameters behind the verdict, then further details
ParameterFlat Metal PatternsDiameter Finder
PriceFreeFree
Rating4.4 (27 ratings)5.0 (1 ratings) — better
Positive reviews83.3% of reviews100.0% of reviews — better
Number of ratings27 — better1
Update frequencyEvery 5 weeks — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.012.1 — better
Further details — not scored
Size135 MB13 MB
Age rating4+4+
DeveloperIgnacio Renteria-MolinaKrzysztof Gwiazda

Customer experience

Flat Metal Patterns

All ratings25 ratings
Positive88.0%
Neutral0.0%
Negative12.0%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

Diameter Finder

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Flat Metal Patterns

Subscriptions3
  • One month subscription$7.991 Month
  • 3 months subscription$19.993 Months
  • 6 month subscription$38.996 Months
None

Diameter Finder

No in-app purchases

Questions

Is Flat Metal Patterns free?
Flat Metal Patterns is free to download, with in-app purchases available.
Is Diameter Finder free?
Diameter Finder is free to download, with no in-app purchases.
Which has better reviews, Flat Metal Patterns or Diameter Finder?
Diameter Finder is rated higher. Flat Metal Patterns averages 4.4 out of 5 from 27 ratings, while Diameter Finder averages 5.0 from 1 ratings.
Do Flat Metal Patterns or Diameter Finder have ads?
Neither Flat Metal Patterns nor Diameter Finder shows ads.
Which is updated more often, Flat Metal Patterns or Diameter Finder?
Flat Metal Patterns ships an update every 5 weeks, and Diameter Finder every 5 months. Most recently, Flat Metal Patterns was updated on October 20, 2026 and Diameter Finder on October 6, 2026.

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