Karatly: Ring Sizer & Gold
Check what scrap gold is worth at a dated official reference price, read stamps before you sell, and find a ring size in 8 systems. No ads, no trial trap.
Screenshots
Karatly values scrap gold, reads jewelry stamps and finds your true ring size, in one ad-free toolkit that looks like a jewelry shop.
Scrap value before you sell
Enter the weight in g, dwt, ozt or tola, pick a purity or read the stamp, and see fine weight, market value and a typical buyer payout. Build a lot of mixed karats with one discount to spot. 18 bullion coins are built in, from the Krugerrand to the Sovereign.
Is it really gold
The stamp lookup flags gold-filled and plated marks such as 18KGP or 1/20 14K GF, and asks which metal a bare 999 or 950 is instead of guessing. A stamp is a claim, not a test.
Prices with a date
Gold, silver, platinum and palladium in 43 currencies, each with its source, age and tax basis, plus 1-year charts. Prices are an official daily reference (Bank of Russia, converted at ECB and Bank of Russia rates) and always show their date; not tick-by-tick. You can use your own price instead, such as a buyer's rate. A home-screen widget refreshes itself. Values are indicative estimates, not offers.
Your true ring size
Calibrate the screen once with a bank card or a coin, then match a ring or measure a finger. You get a size certificate with diameter and circumference in mm, a ± error for your method and all 8 systems: US/CA, UK/AU, EU, RU, JP, CN, IT/ES/CH and BR. Skip calibration and the result says it is estimated. Converter, size chart, ruler and printable paper sizer are included.
For jewelers
Assay and ligature, weight from volume, wax to metal, casting cost per gram or per dwt, karat estimate by density, an STL viewer and PDF job quotes.
Free and Pro
No ads anywhere. Ring sizing, stamp lookup, prices, the widget, the value calculator, scrap lots, coins and one portfolio are free. Each Pro tool gives 3 real results with your own numbers first. Pro is a one-time lifetime unlock or a yearly plan, with no time trial. It adds unlimited workshop tools, the STL viewer, the job ledger, PDF scrap quotes, the family size book, 5-year history, price alerts checked daily, more portfolios and CSV export.
Privacy
No account and no sign-in. Your data stays on your device, the app works offline, and price downloads send no personal data.
Support: support@appfactory.pro
Works offline. No account, no tracking, no ads.