KaratMaster: Gold Calculator
Scrap Gold & Karat Value
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
Calculate scrap gold value in seconds from weight, karat, spot price and payout — offline, with transparent math and a Digital Crown calculator on Apple Watch.
Calculate scrap gold value in seconds using weight, karat, spot price and payout settings. KaratMaster works offline and brings a fast calculation workflow to your iPhone and Apple Watch.
Built for jewelers, gold buyers, pawn shops and anyone who needs a quick, transparent estimate — without an account and without sending anything to a server.
FEATURES
• Weight in grams with 0.01 g precision
• Common karats in one tap: 24K, 22K, 21K, 18K, 14K, 10K, 9K — or any custom fineness
• Spot price per gram, troy ounce (31.1034768 g) or kilogram
• Payout presets from 70% to 100%, or your own percentage
• Custom buying-price mode for your counter prices
• Optional deductions: melting loss, processing, refining and other fees
• USD, EUR, GBP, TRY, CHF, AED, SAR, JPY and more
HOW IT WORKS
1. Enter the weight
2. Tap the karat
3. Confirm your spot price and payout
4. See the estimated scrap value — with every step of the math
APPLE WATCH
A discreet calculator on your wrist. Turn the Digital Crown to set the weight, turn again to choose the karat, confirm the synced spot price and read the estimate. Subtle haptics confirm each step. The watch keeps your last synced prices, so it works even when your iPhone is out of reach.
WIDGETS
Keep your saved gold price one glance away with Lock Screen and Home Screen widgets: spot price, a quick value for your last calculation and a per-gram table for every common karat. A Control Center button opens the calculator directly.
OFFLINE ENGINE
Every calculation runs on your device with exact decimal arithmetic — it works in Airplane Mode. KaratMaster never downloads prices: the spot price is always the value you enter, shown with the time you last changed it.
TRANSPARENT MATH
See exactly how the result is produced:
10.00 g × 75.0% = 7.500 g pure gold
7.500 g × spot price = gross value
gross value × payout % − deductions = estimated value
Deductions are always listed separately — never hidden in the final number.
HISTORY AND PRESETS
Save calculations on your device, recalculate them later and keep presets such as "Jewelry Shop — 18K / 85%".
PRIVACY
No account. No analytics. No tracking. No cloud database. Your calculations and history stay on your device.
LIFETIME PURCHASE
Try 3 free calculations on iPhone. Then a one-time KaratMaster Lifetime purchase unlocks unlimited calculations and the Apple Watch Digital Crown calculator — no subscription. Your saved history always stays available.
DISCLAIMER
Values are estimates based on the prices and settings entered by the user. Actual purchase, refining and market prices may differ. KaratMaster is a calculation tool — not a bank, exchange, trading platform, or financial or investment advice.
Terms of Use: https://karatmaster.tarikdavulcu.com/terms.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Tarik Davulcu, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tarik Davulcu
- Size
- 5 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later. - Apple Watch
Requires watchOS 26.0 or later.
- iPhone
- Languages
English and 6 more
- English, Arabic, French, German, Japanese, Spanish, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- KaratMaster Lifetime $19.99
- Copyright
- © 2026 KaratMaster