Tap Drill Chart & CNC Speeds
Machinist calculator & tables
Only for iPhone
$19.99 · Designed for iPhone. Not verified for macOS.
iPhone
The cut is set up and the tool is in the holder. This is the part where you find out what to run it at, and where the number came from.
The setup is done, the tool is in the holder, and the only thing left is the number
on the control. That is the part this app is for.
SPEED AND FEED, WHILE YOU TYPE
Change the tool diameter and the RPM moves with it. There is no equals button to
miss and no second screen to open. Every result carries the formula that produced
it and the document that formula came from, so you can hand the number to anyone
who asks where you got it.
THE DRILL YOU ACTUALLY OWN
Type a thread like 1/2-13 or M10x1.5 and get a drill that exists in the drawer -
fractional, number, letter, or metric - with the thread engagement that size gives
you. Not the theoretical size. The one on your index.
IT KNOWS YOUR MACHINE
Enter your spindle's top RPM once. When a cut asks for more than the machine can
turn, the number goes red and tells you how far to back the surface speed off.
Nobody else on the floor has to catch it for you.
TABLES THAT FEED THE CALCULATOR
Unified and metric thread tables, tap drill charts, and a right-triangle and sine
bar solver that takes degrees and minutes the way your print does. Tap a row and it
lands in the calculator.
READABLE AT ARM'S LENGTH
Numbers sized to read from where you stand, buttons sized for gloves and for a phone
inside a bag. No signal needed, ever. No account, ever.
WHERE THE NUMBERS COME FROM
Cutting speeds are drawn from TC 9-524, Fundamentals of Machine Tools, published by
the Department of the Army - a public document you can look up and check. Thread and
tap drill data follow ASME B1.1 and ISO 261/965.
ONE PURCHASE
Buy it once. No subscription, no renewal, no upsell inside the app.
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The developer, Nattapon Kittisuphat, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nattapon Kittisuphat
- Size
- 2.9 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Nattapon Kittisuphat
