Screenshots
The App in Action
Clean, fast, distraction-free. All inputs instantly to hand.
BenchTool combines 26 calculation modules for daily workshop use – from ring sizing to alloys. Offline, bilingual, on any device.
From ring shanks to electroplating – all the formulas you know, now in one app.
Ring sizes EU, US, UK, JP and more. Shank length by neutral axis. Bezels round, oval and square.
Re-alloying and new mixes. Colour recipes for yellow, red, rosé and white gold built in.
Wax-to-metal conversion for all common alloys. Density is set automatically.
Stone weight, bezel calculator, drill and mill diameters for all common stone shapes.
Step table with annealing markers. Round wire to square rod. Cross-section calculation.
Projects with target/actual times, stopwatch, material costs and PDF export for invoicing.
Layer thickness, current and time for gold plating, silver plating and rhodium plating.
Solder temperatures, temper colours, grinding and polishing grades, drills & mills always at hand.
Works without internet. Installable on iOS and Android like a native app.
Clean, fast, distraction-free. All inputs instantly to hand.
A quick overview of the key modules.
No hidden costs. All updates included.
Sign up and start right away – or buy once for permanent access.
BenchTool runs as a PWA directly on your device – no App Store needed.
Works offline · No App Store · Always up to date
ABOUT
BenchTool grew out of a very concrete problem at the workbench: calculations needed again and again – ring sizes, casting weights, alloy ratios – were scattered across tables, books, or stored only in memory. A digital tool that brings everything together in one place and responds as fast as the work itself simply didn’t exist.
So it was built.
The Developer
Philipp Spengler
Goldsmith apprentice in his final year at the Staatliche Zeichenakademie Hanau – one of the most renowned goldsmithing schools in the German-speaking world.
BenchTool is built on the side – between the workbench, classes and final exams. Please bear with me if enquiries are not always answered immediately.