Knuckle vs KaratMaster

Knuckle turns your screen into a ring sizer. Lay a ring you already own flat on the display, match the gold circle to the inside of the band, and read the size. That is the whole thing. No camera, no printing, no paper strips to cut out, no trip to a jeweler. Before the first measurement you line a bank or ID card up against an outline, once, so Knuckle learns exactly how large a millimetre is on your particular screen. Every reading after that is true to your device. You get the inner diameter in millimetres next to the sizes people actually ask for - US, UK, EU, Japan, Australia, Hong Kong and Italy. Each result carries an honest confidence band instead of one number pretending to be certain. Sizes are worth keeping. Save one under the person it belongs to, note the finger and the hand, and look it up later while you are standing in the shop. Send a clean size card to whoever is buying. Nothing leaves your device. No account, no sign in, and it all works with the network switched off. Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vTDX9pxPOlUJl_skVUHPi99mAw0y2B2BYd_v1mJkoF3xW3rlOcW5KlYd4t93MMbbGhctSTnBTy7d_l6/pub Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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