Cutter – Milling Speeds and Feeds is a precision-focused machining utility designed for CNC professionals, machinists, and manufacturing engineers who need fast and reliable cutting data. Available exclusively on iPhone via the Apple App Store, this app helps users calculate optimal speeds and feeds for endmills and ball nose cutters, making it an essential tool for daily shop-floor and programming work.
Built for both metric and US units, Cutter simplifies complex CNC calculations by generating baseline spindle speeds (RPM) and feed rates directly from tool parameters and material groups. Whether you are working with tool steel, stainless steel, aluminum, or other common machining materials, the app ensures accurate results that align with real-world milling conditions.
The app includes advanced machining features such as Material Removal Rate (MRR) calculation, effective diameter for ball nose tools, chip thinning compensation, and ball nose step-over / cusp height control. Users can also dynamically slide tool settings to adjust cut width and depth, helping fine-tune machining strategies for performance, surface finish, and tool life.
To maintain machine safety and tooling limits, Cutter allows users to set maximum RPM values, ensuring calculations stay within spindle capabilities. The interface is clean, fast, and optimized for quick reference on the shop floor, making it ideal for CNC milling, CAM setup validation, and process optimization without opening full CAM software.
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