Best Drill Chart Apps & Games

186+ iOS apps & games curated and reviewed

4.4 avg rating
15 free apps & games
Updated June 2026

Finding the right drill chart app can be overwhelming with so many options. We've analyzed 186+ apps and games to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Top Picks for Drill Chart

Drill Size Charts - Drill bit size tables to show US Number / Letter and Fraction Inch sizes in Decimal Inch and Metric Conversions screenshot 1
Drill Size Charts - Drill bit size tables to show US Number / Letter and Fraction Inch sizes in Decimal Inch and Metric Conversions screenshot 2
Drill Size Charts - Drill bit size tables to show US Number / Letter and Fraction Inch sizes in Decimal Inch and Metric Conversions screenshot 3
Drill Size Charts - Drill bit size tables to show US Number / Letter and Fraction Inch sizes in Decimal Inch and Metric Conversions screenshot 4

This application provides easy access to drill bit size charts, allowing users to quickly find decimal inch and metric size equivalents for various drill bit types, including US Number and Letter Gauge Sizes, Fractional-Inch Sizes, and Metric Sizes. A helpful reference tool for professionals and students, it features search functionality, support for all device orientations, and is available for use across multiple iOS devices.

iEngineer#2

iEngineer by Perfectly Simple Apps LLC

Strong Contender
šŸ” Reference
4.5😊(191 ratings)
FreeIn-App Purchases
iEngineer screenshot 1
iEngineer screenshot 2
iEngineer screenshot 3
iEngineer screenshot 4
iEngineer screenshot 5

Access the most comprehensive screw and bolt database with iEngineer. Find detailed information on 93 different US screws and more. Get all the screw details you need at your fingertips!

What We Love

  • šŸš€ Easy to navigate
  • šŸ‘ Comprehensive information
  • šŸ”§ Useful for everyday work
  • āš™ļø Essential for engineers and machinists

Room to Improve

  • šŸ› Occasional errors in torque and tensile strength data
  • šŸ’° Metric information requires paid upgrade
  • šŸ” Missing some thread types like NPT and BSPP

More Drill Chart apps to explore

4
Drill Speed
Drill Speed
Drill Speed
Drill Speed Calculator
Free

This application helps you find the optimal drill speeds for your drill bits and materials with a simple and intuitive interface. It allows you to quickly select your drill bits and materials, and provides details and remembers your selections for easy reference, even on an Apple Watch.

šŸ” Reference
(2)
5
WS Drill Bits
WS Drill Bits
WS Drill Bits
by Rein Rapp
Free

Simplify your machining tasks with a comprehensive drill bit calculator. Quickly access a detailed size chart, determine optimal speeds and feeds for various materials, and calculate precise drill point depths for any angle.

šŸ“š Education
(2)
6
Grafio 4 - Diagram Maker
Grafio 4 - Diagram Maker
Grafio 4 - Diagram Maker
Sketch, chart & explain ideas
$9.99

Create professional diagrams and sketches easily with this powerful diagram maker app. Visualize ideas, workflows, and plans effortlessly. Download now to streamline your diagramming process!

šŸ“Š Productivity
(252)
7
Drill Bit Nozzle Calculator
Drill Bit Nozzle Calculator
Drill Bit Nozzle Calculator
by NOV Inc.
Free
šŸ’¼ Business
(2)
8
Chart Builder Graph Maker
Chart Builder Graph Maker
Chart Builder Graph Maker
Pie,Bar,Line Chart
Free

Create professional line charts, bar charts, and pie charts easily with this app. Visualize your data like never before!

šŸ“Š Productivity
(92)
9
Easy Chart
Easy Chart
Easy Chart
by Andrew Griffiths
Free

This application allows users to create various types of charts, including bar, line, pie, and sidebar charts, and save them as photos in different sizes, all without needing an internet connection. Users can also upgrade to an advanced pack to unlock additional features, such as uploading charts to social media and customizing chart styles.

šŸ”§ Utilities
(25)
10
DrillOut Calcs
DrillOut Calcs
DrillOut Calcs
Common plug drill-out calcs
Free
šŸ”§ Utilities
(2)
11
DCI DigiGuide
DCI DigiGuide
DCI DigiGuide
by Digital Control, Incorporated
Free

This application provides step-by-step instructions for mastering equipment operations, offering a fully searchable resource for professionals to access essential information and complete tasks efficiently. Download it now to get started with expert guidance at your fingertips.

šŸ“Š Productivity
(12)
12
Drill Bit Converter
Drill Bit Converter
Drill Bit Converter
by Dohmann Engineering Services
$0.99
šŸ”§ Utilities
(0)
13
FSWizard PRO
FSWizard PRO
FSWizard PRO
by Eldar Gerfanov
$17.99

This application is a CNC machinist speed and feed calculator that simplifies the calculation of cutting conditions for milling, drilling, and turning operations by automatically using recommended cutting speeds and chip loads based on work and tool material selection. It helps improve productivity, optimize cutter life, and supports various machining operations, including chip thinning and HSM machining.

šŸ“Š Productivity
(23)
14
Max Drilling
Max Drilling
Max Drilling
by NOV Inc.
Free

This mobile app provides real-time access to drilling operation data, allowing users to monitor and analyze their operations remotely with customizable visualizations and secure, compliant data streaming. Download the app to gain instant insights, collaborate with teams, and view historical and active well data on-the-go.

šŸ’¼ Business
(22)
15
Organization Chart Management
Organization Chart Management
Organization Chart Management
project, business and contact
Free

Create professional organizational charts effortlessly with our app. Streamline the process with automation, intuitive interfaces, and privacy focus. Visualize your team structure effectively without any drawing hassles.

šŸ’¼ Business
(569)
16
Blackjack - Vegas Casino Real
Blackjack - Vegas Casino Real
Blackjack - Vegas Casino Real
Play learn train practice win!
Free

Experience the most authentic casino-style Blackjack app with free chips, basic strategy advice, and customizable table rules. Perfect for learning, practicing, or just having fun - play, learn, and win big!

šŸŽ® Games
(4.6K)
17
Flowchart Designer 3
Flowchart Designer 3
Flowchart Designer 3
A Simple Flow Chart Maker
Free

Create professional flowcharts, org charts, and more easily with Flowchart Designer 3. Features include drag-and-drop functionality, unlimited undo, and various export options. Email arrowgraphics@icloud.com to learn more.

šŸŽØ Graphics & Design
(99)
18
Chartistic - Charting App
Chartistic - Charting App
Chartistic - Charting App
by Zoho Corporation
Free

Create visually appealing and interactive charts on the go with our powerful charting app! Easily enhance your presentations, emails, and documents with our clipart-powered data visualizer. Download now to level up your data presentation game!

šŸ“Š Productivity
(234)
19
Blackjack Trainer 101
Blackjack Trainer 101
Blackjack Trainer 101
Learn Basic Strategy
Free

Practice perfect Blackjack strategy with Blackjack 101 Lite, featuring four learning modes, customizable rules, and strategic guidance. Enhance your skills with different skill levels and rule configurations. Perfect your game today!

šŸŽ® Games
(6.1K)
20
Dyna-Drill Power Sections
Dyna-Drill Power Sections
Dyna-Drill Power Sections
by Schlumberger Technology Corporation
Free
šŸ“Š Productivity
(3)