Best Flange Hole Marker Calculator Apps

211+ iOS apps curated and reviewed

4.5 avg rating
15 free apps
Updated May 2026

With an average user rating of 4.5ā˜…, the flange hole marker calculator category is one of the App Store's strongest. Browse all 211+ apps we track, sorted so the most loved ones surface first.

Top Picks for Flange Hole Marker Calculator

Flange Hole Marker Calculator#1

Flange Hole Marker Calculator by Kantaben Gorasiya

Flange Hole Marker
Editor's Choice
šŸ”§ Utilities
5.0(1 ratings)
$3.99
Flange Hole Marker Calculator screenshot 1
Flange Hole Marker Calculator screenshot 2
Flange Hole Marker Calculator screenshot 3

This engineering tool accurately calculates and marks bolt hole positions on flanges for machinists and fabricators. It offers features for equispaced, angle-based, and equivalent hole counts, saving time and reducing manual errors in workshop settings.

Calculator for iPad!#2

Calculator for iPad! by 7th Gear

Basic & Scientific Calculator
Strong Contender
šŸ”§ Utilities
4.7😊(60K ratings)
Free
Calculator for iPad! screenshot 1
Calculator for iPad! screenshot 2
Calculator for iPad! screenshot 3
Calculator for iPad! screenshot 4

This app offers both basic and scientific calculation modes with over 30 scientific operations. It allows for customization of the app's appearance and includes features for note-taking, drawing, and viewing calculation history. It supports high accuracy calculations and nested parentheses.

What We Love

  • šŸ“ Versatile calculator with basic and scientific modes
  • šŸ“ Useful note-taking and calculation history features
  • šŸŽØ Customizable color schemes
  • šŸ’» Works well on both iPad and iPhone

Room to Improve

  • šŸ’° Ads can be intrusive in free version
  • šŸ”’ Lack of transparency around in-app purchases
  • šŸ” Difficulty finding and accessing premium features

More Flange Hole Marker Calculator apps to explore

4
Flange Hole Marker Calc
Flange Hole Marker Calc
Flange Hole Marker Calc
Accurate Flange Hole Layout
Free

This engineering tool simplifies flange hole layout for professionals. It offers three calculators for accurate marking of equispaced, angled, or equivalent holes, saving time and reducing errors in fabrication and machining. Works offline.

Equispaced Hole CalculatorHoles at Any Angle CalculatorEquivalent Holes Calculator
šŸ”§ Utilities
(1)
free with in-app purchases
5
Concrete Calculator Plus
Concrete Calculator Plus
Concrete Calculator Plus
by Inch Calculator
Free

This app provides 15 calculators for estimating concrete, blocks, mortar, rebar, and gravel. It supports various shapes and units, offering material cost estimations for construction projects.

15 concrete estimation calculatorsEstimates cubic yards or bagsCalculates material costs
šŸ”§ Utilities
(21K)
ad-supported
6
Calculator with History +
Calculator with History +
Calculator with History +
No ads & Scientific calculator
Free

This free calculator app offers a fast, ad-free experience with a visual input and calculation history. Customize your experience with various keyboard sounds and colors, and access advanced scientific functions when needed.

Ad-free experienceCalculation historyVisual input
šŸ’° Finance
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free with in-app purchases
7
Calculator +
Calculator +
Calculator +
Scientific Calc Plus Fraction
Free

This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.

Free basic and scientific calculatorIntuitive interface with equation and result displayFraction and percent support
šŸ”§ Utilities
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free with in-app purchases
8
OneCalc: All-in-one Calculator
OneCalc: All-in-one Calculator
OneCalc: All-in-one Calculator
Calculates everything. Try it.
Free

This app offers a comprehensive suite of over 40 calculators and unit converters for various needs, including finance, health, construction, and everyday math. It features standard, scientific, and specialized calculators for tasks like loan amortization, currency conversion, and material estimation.

Over 40 calculators and unit convertersStandard and scientific calculator functionsFinancial calculators (interest, loan, currency)
šŸ“Š Productivity
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free with in-app purchases
9
Calculator with History Tape
Calculator with History Tape
Calculator with History Tape
No Ads Calculator with Memory
Free

This app provides a straightforward calculator experience with a comprehensive history log of all your computations. Customize the keyboard, display, and history records to suit your needs. Easily add annotations and titles to past calculations for better organization.

History record functionDisplay input equationAdjustable keyboard size and font
šŸ“Š Productivity
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free with in-app purchases
10
Feet and Inches Calculator
Feet and Inches Calculator
Feet and Inches Calculator
Perfect Construction Calc!
Free

A powerful construction calculator designed for tradespeople. It offers a wide range of tools for estimating, layout, framing, and jobsite calculations, helping to save time and improve accuracy. Supports both imperial and metric units.

Construction math and estimatingLayout, framing, and jobsite calculationsImperial and metric unit conversion
šŸ”§ Utilities
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free with in-app purchases
11
GraphNCalc83
GraphNCalc83
GraphNCalc83
Graphing calculator
$12.99

This app offers a powerful graphing calculator experience with touch-based input for enhanced interaction. It supports natural textbook notation, advanced math functions, and various plotting capabilities. Users can also utilize its programming features and built-in tools like unit conversion and a periodic table.

Touch-based graphing and editingNatural textbook notation inputAdvanced math and statistical functions
šŸ“š Education
(3.8K)
paid
12
Figure calculator ShapeInfo
Figure calculator ShapeInfo
Figure calculator ShapeInfo
Geometric shape calculator
Free

Easily calculate lengths, angles, and areas of various geometric shapes. Input known values and instantly get precise results for a wide range of 2D and 3D figures. Ideal for students and engineers needing quick geometric computations.

Calculate lengths, angles, and areaSupports 2D shapes (triangle, circle, ellipse)Supports 3D shapes (pyramid, prism, cone, cylinder, sphere)
šŸ“Š Productivity
(134)
ad-supported
13
CNC Machinist Calculator Pro
CNC Machinist Calculator Pro
CNC Machinist Calculator Pro
by Shane Anderson
$14.99

This app provides a comprehensive suite of calculators and tools for CNC machinists, engineers, and hobbyists. It offers specialized calculations for turning, milling, drilling, threading, and geometric tolerances, along with material data and G-code generation.

Turning, Milling, and Drilling CalculatorsThread and Bolt Pattern CalculatorsGeometric Tolerance (GD&T) Tools
šŸ“Š Productivity
(642)
paid
14
Block Calculator Plus
Block Calculator Plus
Block Calculator Plus
by Inch Calculator
Free

This app provides nine specialized calculators to accurately estimate masonry materials for various construction projects. It helps calculate blocks, bricks, mortar, concrete, and gravel needed for walls and other structures, supporting multiple units of measurement.

9 concrete block estimation calculatorsEstimate blocks, bricks, mortar, and fillSupports US customary and metric units
šŸ”§ Utilities
(845)
ad-supported
15
Solves: Calculator for All
Solves: Calculator for All
Solves: Calculator for All
On all devices
Free

A powerful and versatile calculator for all your Apple devices. Edit complex expressions, sync history across devices, and enjoy a clean, ad-free experience. Unlock advanced features like unit conversion and fraction support with an optional upgrade.

Edit expressions without limitationsInstant resultsSync calculation history across devices
šŸ”§ Utilities
(371)
free with in-app purchases
16
Feet&Inches Calculator
Feet&Inches Calculator
Feet&Inches Calculator
Fraction Calculator
Free

This app simplifies complex measurements and fraction calculations. Convert between various units, perform addition and subtraction of measurements, and work with feet-inches and fractional inches. It also includes a full fraction calculator with advanced functions and a history tape.

Comprehensive measurement conversionFeet-inches and inches as fractionsFlexible rounding options
šŸ”§ Utilities
(80)
ad-supported
17
Construction Calculator
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Feet Inch Calculator
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This app is a powerful calculator designed for construction and woodworking professionals, as well as students. It simplifies calculations involving feet, inches, and fractions, offering conversions between various measurement units and displaying equations and results simultaneously. Advanced features are available through optional in-app purchases.

Decimal to fraction converterFraction to decimal conversionSimultaneous equation and result display
šŸ”§ Utilities
(554)
free with in-app purchases
18
PCalc
PCalc
PCalc
The Best Calculator
$9.99

A powerful calculator designed for professionals and students, offering advanced features like RPN mode, multi-line display, and extensive unit conversions. It supports various number systems and includes an Apple Watch app for on-the-go calculations.

Optional RPN modeMulti-line displayExtensive unit conversions
šŸ”§ Utilities
(758)
free with in-app purchases
19
Builder's Helper MAX
Builder's Helper MAX
Builder's Helper MAX
Construction Calculator +
Free

This comprehensive construction app offers advanced calculation tools for linear, square, and cubic measurements in both imperial and metric units. It includes features for roof pitch, stair lengths, and a memory bank for storing values. Manage projects with detailed lists, store documents and images, and utilize quick job calculators for various construction tasks.

Advanced construction calculator (imperial/metric)Roof pitch and rafter length calculationsProject management with data lists
šŸ”§ Utilities
(1.6K)
free with in-app purchases
20
Calculator Max
Calculator Max
Calculator Max
Modern All-in-One Calculator
Free
$0.99 | 100% OFF

This app offers a comprehensive suite of calculation tools, from basic arithmetic to advanced scientific functions. It features a history tape for easy access and reuse of entries, and a unique scribble pad for handwritten notes and equation solving on iPads. Enjoy a clean interface, multitasking support, and customizable themes.

Basic and scientific calculatorsHistory tape with export optionsHandwritten notes and equation solving
šŸ”§ Utilities
(1.8K)
free with in-app purchases