GoldCalculator Pro vs OTEC

GoldCalc Pro – Real-Time Gold & Silver Price Calculator GoldCalc Pro is the ultimate tool for jewelers, pawn brokers, investors, and precious metal buyers. Instantly calculate the value of gold and silver based on live spot prices. Features: Live gold & silver prices (24K, 22K, 18K, down to 8K, plus .925 and .999 silver) Input weight in grams or pennyweight (dwt) Adjustable buy/sell margin (±%) Refresh spot prices in one tap Dark Mode support Easy-to-use layout optimized for professionals and everyday users Whether you're buying, selling, or quoting — GoldCalc Pro gives you fast, accurate pricing every time. Perfect for: Jewelers Pawn Shops Scrap Buyers Gold/Silver Investors Coin Shops

Designed for professional metal polishing, OTEC gives you a smarter, faster and more precise way to manage your workflows. Key Features • Seamless Bluetooth connection to your EF-One or EF-Nova • Adjust processing parameters directly from the app • Save custom settings for consistent, repeatable results • Create and manage Recipes for specific workpieces, including time, speed & voltage • Improve efficiency with quick access to your preferred polishing processes With OTEC, you can bring precision, repeatability and maximum convenience to your surface-finishing operations—right from your smartphone.