Mainplate

Watch Flip & Collector Tracker

Free · In‑App Purchases · Designed for iPad

The digital space serious watch enthusiasts have been waiting for. Collection, flips, daily pick, atomic clock sync, inventory — finally in one place. 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/

Ratings & Reviews

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1.1 is here. The fun update finally arrived. What's new in 1.1: - Daily picker. Let the fate choose your daily pick. When you shake your phone, a random watch from the collection is displayed to wear. - Warning message for watches in the collection for more than 7 years from the date of purchase without a service. Paid tiers can change this value. - A summary of the watch in the collection or the flip can be exported in A5 or A4 PDF format that can be printed or saved. No watermarks for paid tiers. - Ability to sort the collection by status. - Ability to sort inventory by name or price. Fixes: - Fixed all comma-separated decimal entries.

Version 1.1

The developer, Jacopo Caggiano, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer indicated that this app supports the following accessibility features. Learn More

    • Supported Features

      • Dark Interface

      • Differentiate Without Color Alone

      • Reduced Motion

    Information

    Seller
    • Jacopo Caggiano
    Size
    • 5.5 MB
    Category
    • Lifestyle
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    Languages
    English and 12 more
    • English, Arabic, French, German, Hindi, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Turkish
    Age Rating
    4+
    In-App Purchases
    Yes
    • Pro Annual $34.99
    • Collector Annual $17.99
    • Pro $3.99
    • Collector $1.99
    • Lifetime Access $89.99
    • Learn More
    Copyright
    • © Jacopo Caggiano
  • Developer Website
  • Privacy Policy