DupeDetective Receipt Scanner

Receipt Scanner & Dupe Finder

Free · In‑App Purchases

Dupe Detective: Stop Paying for Double Scans Did the cashier accidentally scan an item twice? Did that “Buy One, Get One” deal actually ring up correctly? Grocery stores are busy, and checkout mistakes happen more often than you think. Dupe Detective is your personal receipt auditor and budget protector. Designed to catch costly double-scans and billing errors, our smart receipt scanner makes it incredibly fast and easy to verify your purchases before you even leave the parking lot. Simply snap a photo of your paper receipt or import a digital one. Our advanced, on-device AI instantly reads the line items and flags any duplicate charges so you can head straight to customer service and get your refund. Works with Costco, Kroger, Fry’s, Sam’s Club, Walmart and most major grocery stores. No subscription required. Everything is processed privately on your iPhone. Key Features Instant Duplicate Detection Quickly identifies identical or highly similar items on your receipt. Stop guessing and start verifying. 100% Private, On-Device Scanning Your financial data belongs to you. Dupe Detective uses advanced on-device OCR to read your receipts with no cloud servers, no data harvesting, and no internet connection required. Smart Grocery List More than just a scanner, Dupe Detective includes a built-in grocery list manager. Plan your shopping trips ahead of time, stay on budget, and keep everything organized in one place. Receipt History & Organization Keep a digital archive of your past shopping trips. Easily save and review scanned receipts to track spending habits, monitor price changes over time, or keep records for returns and warranties. Fast & Easy to Use Professional interface designed for quick scans. Get results in seconds so you can get on with your day. Download Dupe Detective today and start catching the charges you shouldn’t be paying for. Seamless Light & Dark Mode A beautifully designed interface that automatically adapts to your system preferences, or can be toggled manually in the app settings for comfortable viewing at any time of day. DUPEDETECTIVE PRO Upgrade to our Pro tier to unlock unlimited receipt scanning and continuous protection against checkout errors for less than the cost of a single double-scanned item! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Ratings & Reviews

  • 5.0
    out of 5
    2 Ratings

Updated App Store screenshots to better show how Dupe Detective flags duplicate charges on a real receipt. No changes to app functionality in this release.

Version 1.1.1

The developer, Marcus Chaffee, 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

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Marcus Chaffee
    Size
    2.5 MB
    Category
    Finance
    Compatibility
    Requires iOS 18.6 or later.
    • iPhone
      Requires iOS 18.6 or later.
    • iPad
      Requires iPadOS 18.6 or later.
    • Mac
      Requires macOS 15.6 or later.
    • Apple Vision
      Requires visionOS 2.6 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © Marcus Chaffee 2026
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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