Comparison

Flat Metal Patterns vs O

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

O

Features
Read full description

Some of the main features of the application are: • Calculator: easily define what the geometrical parameters for rock blasting should be. • Safety: Measure the ground vibration and acoustics levels of the blast site. • Data tables: Find out acceptable levels of vibration, glossary used in the explosive industry, linear charge of the explosive according to different diameters and desities of explosive and etc. • Products: Learn more about the range of solutions O-Pitblast can offer you to optimize your drilling and rock blasting solutions.

Screenshots

Flat Metal Patterns4 screens
O4 screens

Verdict

The call

The clearest difference is in-app purchases: O at none against Flat Metal Patterns's 3. O also leads on update cadence (every 2 weeks vs every 5 weeks). Flat Metal Patterns's advantage is ads (none vs shown). On price, 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. O asks for nothing beyond the download.

UpkeepUpdate frequency

Flat Metal Patterns ships an update every 5 weeks, O every 2 weeks. The most recent releases landed on September 16, 2026 and December 23, 2025 respectively.

Scorecard3 real differences · 7 level
Flat Metal Patterns versus O: the parameters behind the verdict, then further details
ParameterFlat Metal PatternsO
PriceFreeFree
Rating4.4 (25 ratings) — better—
Positive reviews83.3% of reviews—
Number of ratings25 — better—
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.012.0 — better
Further details — not scored
Size135 MB52 MB
Age rating4+4+
DeveloperIgnacio Renteria-MolinaO-Pitblast, Lda.

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

O

No in-app purchases

Questions

Is Flat Metal Patterns free?
Flat Metal Patterns is free to download, with in-app purchases available.
Is O free?
O is free to download, with no in-app purchases.
Do Flat Metal Patterns or O have ads?
O shows ads; Flat Metal Patterns does not.
Which is updated more often, Flat Metal Patterns or O?
Flat Metal Patterns ships an update every 5 weeks, and O every 2 weeks. Most recently, Flat Metal Patterns was updated on September 16, 2026 and O on December 23, 2025.

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