Access comprehensive drill bit size charts with ease. Quickly find conversions between US Number/Letter, Fractional-Inch, and Metric sizes. A handy reference for professionals and students alike.




186+ iOS apps & games curated and reviewed
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.




Access comprehensive drill bit size charts with ease. Quickly find conversions between US Number/Letter, Fractional-Inch, and Metric sizes. A handy reference for professionals and students alike.





Access a vast database of screw and bolt information, including dimensions, material grades, and strength properties for both US and metric fasteners. Features a comprehensive drill chart, unit conversion, and customizable material displays.





Calculate the correct drill bit size for your tapping operations. Supports various thread types and inch/metric measurements. Provides precise calculations for depth of thread and clearance.


Easily calculate optimal drill speeds for various drill bits and materials with an intuitive icon-based interface. This app automatically adjusts options based on your selections and remembers your progress.


This application serves machinists, designers, and manufacturing personnel with essential drill bit calculations. It features a comprehensive drill size chart with decimal equivalents, a calculator for optimal speeds and feeds across various materials, and a tool for determining drill point depth based on angle.


Easily create diagrams, charts, and visual explanations of your ideas. This app features automatic shape recognition, a vast library of stencils, and the ability to add audio notes and images to your creations. It's designed for intuitive use by everyone, not just professionals.


Calculate essential drilling parameters like bit TFA, pressure drop, and impact force using bit size, flow rate, and mud weight. Offers a reverse calculation to determine nozzle sizes for a specific total flow area and number of nozzles.


Easily create professional line, bar, and pie charts. Visualize your data with intuitive tools and share your creations.


Create beautiful bar, line, pie, and sidebar charts with ease. Save your creations to photos in various sizes and customize them with multiple color schemes. An advanced pack offers additional sharing and customization options.


This app offers essential calculations for oilfield professionals performing post-frac plug drill-outs. It provides quick and accurate tools to verify flow balance, annular velocity, sweep efficiency, and surface return timing in real time, designed for simplicity and speed.


This app offers detailed, searchable instructions for operating and mastering specific equipment. It serves as a comprehensive digital manual, ensuring users can efficiently complete their tasks.




This app calculates optimal cutting speeds and feeds for CNC milling and turning operations. It supports various materials, tools, and machining techniques like chip thinning and HSM. Includes helpful charts and calculators for machinists.


Monitor drilling operations in real-time with instant access to active and historical well data. Visualize drilling parameters, view rig reports, and communicate securely with your team from anywhere.


Effortlessly create and manage organizational charts without drawing. Input data and customize elements like color, shape, and text. Supports tree structures and offers versatile export options for efficient team visualization.


Experience authentic casino blackjack with big cards and free chips. Learn basic strategy, practice your skills, or play for fun. Configure table rules to match real casinos.


Easily create professional flowcharts, org charts, and process diagrams with a variety of templates and styling options. Organize complex ideas with containers and smart connectors on an infinite canvas. Export your creations in PDF or PNG format.


Easily create visually appealing and interactive charts for presentations and data visualization on your mobile device. Transform your data into compelling stories with a variety of chart types and a unique clipart-powered visualizer. Export your creations for use in documents, emails, and social media.


This app is a practice tool designed to help users learn and master basic strategy for the card game Blackjack. It offers various training modes and customization options to improve decision-making in different scenarios. While it doesn't simulate a full game, it focuses on teaching optimal play.


Explore and search detailed specifications for motor power sections, rotors, and stators. Find the ideal drilling solution by filtering based on tool size, lobes, stages, and revolutions per gallon. Save favorites and connect with experts.