Mainplate

Whether you flip vintage watches on weekends or maintain a carefully curated personal collection, managing your watches has never been this clean, this smart, or this satisfying.
Mainplate is the all-in-one dashboard built for watch enthusiasts, hobbyist flippers, and professional watchmakers. Track every deal, log every service, know your real numbers — and never lose sight of what your time is actually worth.

DASHBOARD — The Full Picture
One screen. Total capital deployed. Realised profit. Average ROI across all flips. Open inventory value. Everything you need to understand your watch business at a glance.
Sync precisely your wristwatch with the atomic clock.

DAILY PICKER - Let the fate choose
Shake your phone to let the fate decide what watch to wear today. It's fun and addictive!

YOUR COLLECTION — Every Watch, Every Detail
Your personal watches deserve more than a spreadsheet. Document each piece with photos, purchase price, a full service diary, and a running cost breakdown. When you sell, Mainplate calculates your gain or loss instantly.
A dedicated Wishlist tab keeps your dream watches organized and ready to promote to your active collection at any time.

FLIP TRACKING — Know Your Real ROI
Every flip is a complete financial record. Log the purchase price, add expenses as you go, track your labor hours at your configured hourly rate, and let Mainplate crunch the numbers. The moment a flip is marked as Sold, you get net profit and ROI % — automatically, no math required.
A four-stage workflow (Acquired → In Progress → For Sale → Sold) keeps your open pipeline and closed deals neatly separated, with color-coded status throughout the app.

TIMEGRAPHER LOG — Precision at a Glance
Record timing readings across all six standard positions (DU, DD, 3U, 6U, 9U, 12U), amplitude, and beat error. Mainplate computes the delta automatically and flags anomalies with color-coded diagnostic warnings — so you know exactly whether a movement needs attention before or after a service.

INVENTORY & EQUIPMENT — Your Workshop, Counted
Parts, oils, gaskets, tools — tracked with quantity and value per item. Log entries on a flip can auto-sync to your inventory, keeping stock accurate without extra effort. Your equipment gets its own dedicated section with a running total value.

MORE FEATURES YOU'LL ACTUALLY USE
• Photo gallery with drag-to-reorder and full lightbox viewer
• Inline editing — update watches and flips directly in the list, no extra navigation
• Light & dark mode
• Multiple currencies, and custom category colors & icons

Mainplate started as a free, open-source web app loved by the watch community. Now it's on your iPhone and iPad — the same powerful tools, the same clean design, ready to go wherever you go.
Built for people who take their watches seriously.

DISCLAIMER
Mainplate is an independent app and is not affiliated with, endorsed by, or associated with any watch brand, manufacturer, or marketplace. All brand names, trademarks, and registered trademarks are the property of their respective owners and are referenced solely for informational and descriptive purposes. Any photos added by the user remain under their own responsibility — Mainplate does not host, claim ownership of, or redistribute user-uploaded content.

By downloading Mainplate, you agree to Apple's Standard End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Privacy Policy
https://jacopocaggiano.com/mainplate-privacy-policy/