ChipLoad Support
ChipLoad is a machinist calculator built by a working machinist: speeds & feeds for mill and lathe, drill & tap data, thread lookup and 3-wire measurement, fasteners, drill charts, bolt circles, material weight with going rates, and job costing. No subscription, no ads, no account — it works fully offline.
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Questions, corrections, or a number that looks wrong:
Cutting data gets checked against the handbook and the control, so reports of a bad number are taken seriously.
Common questions
What's free and what's Pro?
A new install gets every tool for a 5-minute trial. After that, the free version keeps the Calculator in full and the basics of Mill and Lathe (material and size). ChipLoad Pro — a one-time $10.99 purchase, no subscription — unlocks everything forever, on every iPhone signed into your Apple ID.
I bought Pro on another phone. How do I get it here?
Open the app, tap any locked tool, and use "Restore a previous purchase" on the Pro screen. Make sure you're signed into the same Apple ID.
Does it need the internet?
No. Everything works offline. The one exception is optional: Material Weight's "Live going rates" setting (off by default) refreshes material prices from the internet about once a day.
Are the cutting numbers guaranteed?
No — they are starting points, like any handbook or catalog recommendation. Verify before you cut, and prove out a first pass, same as always.