A workshop on a blueprint plate. Lay down arbors, cut the teeth, snap wheels into mesh and watch the whole movement come alive. Try the bench below: set the teeth and make the hour wheel turn once for every twelve turns of the minute wheel.
Try the benchSlide a wheel toward its neighbour until it clicks into mesh, then trace its rim to cut teeth one by one.
Ten teeth driving thirty turn three times slower. Add a second pair on the same arbor and the ratios multiply.
Wheels turn, the escapement rocks, the pendulum swings at the length you chose, and the mainspring winds down.
When teeth collide or three wheels fight in a ring, a red marker shows exactly where. Tap it to learn why.
A music box from Geneva, an automaton from Lyon, a regulator for Vienna, a moon disc for Edinburgh and more.
Judged in seconds per day. Within a minute earns gold and a place in your cabinet beside Henri Favre's regulator.
⚙️ We are a small crew of puzzle makers and clock tinkerers who never quite recovered from opening a watch case just to look inside. Jura Clock Bench is the workshop we always wanted on our own desks.
🧭 Our mission is simple: let people feel why one twelfth is ten thirtieths times eight thirty-seconds. We want gears to be something you watch, move and understand, not something you memorise.
🕰️ You get a blueprint plate, a hand crank, arbors, wheels, an escapement and a pendulum. Take commissions from Basel to Prague, hit your seconds per day, or ignore the orders and play on the free bench with nothing to prove.
🔔 Wind the crown. Watch the answer move.
Jura Clock Bench is a self-contained workshop. It does not collect, store or transmit any data about you. Everything you build, from a single pair of wheels to the regulator in your cabinet, stays on your device.
None. We do not collect personal information, device identifiers, usage statistics, location, contacts or any other data. Your commissions, medals and bench layouts are never seen by us.
Because we hold no information, we do not use it, analyse it, profile you or sell anything to anyone. There is no data to share, rent or trade.
Your progress, such as delivered orders, grades and the movements in your cabinet, is kept locally on your device only. There is no cloud, no remote server and no backup copy held by us.
The app contains no third-party analytics, advertising networks, social plug-ins or trackers. Nothing in it phones home.
All gear calculations, simulation and storage happen locally, so there is no transmission that could be intercepted. Your data is protected by the security of your own device, and we encourage you to keep it updated.
The app is suitable for curious players of all ages. Since we collect no data from anyone, we collect none from children, in keeping with the spirit of COPPA and similar laws.
There are no accounts and no sign-ups. To remove all of your progress, simply delete the app from your device. Nothing remains with us afterwards, because nothing was ever with us.
If we update this policy, the new version will appear on this page with a revised effective date. Our core promise of collecting no data will not change quietly.
Questions about privacy are welcome at privacy@jouraclockbenchapp.com.
💌 Found a stubborn gear, have an idea for a new commission, or just want to talk horology? Write to us, we read every message.
⏳ We usually reply within 24 to 48 hours.