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Workshop Calc brings metal weight, unit and fraction conversion, tap drills, threads, bolt circles, chamfers, feeds and speeds, measurement over wires, and job records into one local-first iPhone and iPad app. It works without an account or ads, and core calculations are free with an optional one-time Pro unlock. Results are estimates; verify critical work against standards, manufacturer data, and qualified professionals.
Hi Product Hunt — I built Workshop Calc because shop work often means bouncing between separate calculators, reference charts, and notes while trying to keep the actual job moving. I wanted one local-first toolkit that stays useful even when connectivity is poor and does not require an account or advertising.
The app combines everyday metal and machining calculations with material references and job records on iPhone and iPad. We also published a set of browser-based calculators so people can try the workflow before installing the app.
The biggest design challenge has been balancing speed with responsible outputs. Workshop Calc treats results as estimates, adds guardrails around sensitive exports, and reminds users to verify critical work against standards, manufacturer data, and qualified professionals.
I would especially value feedback from machinists, fabricators, metalworkers, and workshop learners: which calculation do you reach for most often, and what would make it faster in the middle of a real job?
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About Workshop Calc on Product Hunt
“Offline machinist calculators for real shop work”
Workshop Calc was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #67 on the daily leaderboard. Workshop Calc brings metal weight, unit and fraction conversion, tap drills, threads, bolt circles, chamfers, feeds and speeds, measurement over wires, and job records into one local-first iPhone and iPad app. It works without an account or ads, and core calculations are free with an optional one-time Pro unlock. Results are estimates; verify critical work against standards, manufacturer data, and qualified professionals.
Workshop Calc was featured in iOS (110.6k followers) and Productivity (658.2k followers) on Product Hunt. Together, these topics include over 190.6k products, making this a competitive space to launch in.
Who hunted Workshop Calc?
Workshop Calc was hunted by 帆 胡. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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