# Smelter — Gold, Karat & Alloy Calculator > Gold, Karat & Alloy Calculator (iPhone/iPad app by Hector Pardal Arias.) - Source: https://appshunter.io/ios/app/smelter/id6796544103 (this page in markdown: same URL + `.md`) - Developer: [Hector Pardal Arias](https://appshunter.io/developer/1896777517) - Category: Utilities - Price: Free (on sale, was $4.99) - Age rating: 4+ - Requires: iOS 17.0 · 4 MB - Languages: American English, European Portuguese, European Spanish - Released: 2026-08-14 - Data updated: 2026-08-26 - User reviews in markdown: https://appshunter.io/ios/app/smelter/id6796544103/reviews.md ## What is Smelter? Smelter is a precise pocket workbench for jewelers, jewelry students, teachers, and makers who work with precious metals. Prepare alloys, adjust fineness, work with scrap, estimate casting weight, compare densities, calculate fine-metal content, and solve the everyday metal calculations that happen at the bench. BUILT AROUND THE JOB IN FRONT OF YOU Start with what you need to do: • Prepare an alloy • Correct fineness • Calculate a casting • Work with scrap Smelter takes you directly to the right calculation and presents the result in a clear, practical way — including the amounts to weigh and the mathematics behind them. CALCULATE WITH CONFIDENCE Use Smelter for: • Alloy and fineness calculations • Raising or lowering purity • Fine-metal content • Scrap and mixed-metal calculations • Casting-weight estimates • Density conversions • Precious-metal conversions • Ring and stock calculations • Workshop planning BENCH LOG Save useful calculations as workshop records so you can return to previous melts, batches, notes, measured final weights, and process results. It turns a calculation into something you can actually refer to at the bench. PRECIOUS METALS, NOT JUST NUMBERS Smelter is designed around jewelry metals such as gold, silver, platinum, and palladium, with familiar fineness standards and practical workshop terminology. OPTIONAL SPECIALIST EXTENSIONS Smelter’s essential calculation tools are included. If you need more, permanent one-time extensions add deeper specialist capabilities. SMELTER LAB Go further with scrap mixing, advanced formulation, recipes, planning, and multi-element alloy work. JEWELLER’S BENCH Add production-focused tools for stock, ring blanks, geometry, investment, and workshop preparation. MATERIALS LAB Explore a detailed reference library of jewelry and fabrication materials. Compare metals side by side, understand density and working characteristics, and create custom supplier or measured material profiles for use in calculations. SMELTER ACADEMY Learn the principles behind the numbers through structured lessons covering purity, alloys, scrap correction, casting mathematics, melting, process control, and troubleshooting. Interactive exercises connect theory directly to Smelter’s real calculators. The Foundations path is included so you can experience the learning system before deciding whether to unlock the complete Academy. FOR THE BENCH, CLASSROOM, OR STUDIO Whether you are learning jewelry making, teaching metallurgy and calculation, preparing a casting, or working professionally with precious metals, Smelter is designed to make the numbers easier to understand and faster to use. Precise when it matters. Calm when you need it. ## Version history (last 3 releases) ### 1.2 — 2026-08-21 Smelter 1.2 brings more personalization, smoother navigation, and improved reliability across the app. • Choose your accent color — personalize Smelter with seven carefully selected color options, including Smelter Orange, Gold, Copper, Jade, Ocean, Violet, and Rose. • Smoother Calculate experience — scrolling is now properly locked to the vertical axis, eliminating unwanted sideways movement. • More reliable extensions — improved purchase, restore, and entitlement handling for Smelter Lab, Jeweller’s Bench, Materials Lab, and Smelter Academy. • Purchased extensions now refresh automatically when Smelter returns to the foreground, helping keep access in sync across devices. • Improved StoreKit loading and recovery when opening extension purchase screens. • Additional interface, stability, and usability refinements throughout the app. Thank you for using Smelter. ### 1.1 — 2026-08-19 Smelter 1.1 is a major upgrade built around a simpler idea: make Smelter a complete pocket workbench for precious metals. • Smelter is now free to download, with essential calculation tools included. • Calculate has been redesigned with a clearer two-column layout and quick actions based on the job you need to do. • Bench Log makes it easier to save and revisit workshop calculations, notes, measured weights, and results. • Materials Lab now includes 32 material references, including gold, silver, platinum, palladium, and common jewelry alloys. • Materials Lab adds material comparison and custom supplier/measured material profiles. • Smelter Academy now contains 6 structured learning paths and 24 lessons. • Academy includes interactive exercises that connect learning directly to Smelter’s calculators. • The Foundations learning path is available to everyone. • Optional extensions are presented more clearly and remain permanent one-time purchases. • Calculation results, typography, contrast, navigation, and overall readability have been improved throughout the app. • Added a carefully timed native App Store rating request after meaningful use, plus a manual Rate Smelter option in Settings. • Numerous localization, usability, and interface refinements across the app. Thank you for using Smelter. ### 1.0 — 2026-08-14 No release notes. ## More apps by Hector Pardal Arias - [Zero by TetsuoLab](https://appshunter.io/ios/app/zero-by-tetsuolab/id6771301904) - [Technicam by TetsuoLab](https://appshunter.io/ios/app/technicam-by-tetsuolab/id6782422671) - [Dinero by TetsuoLab](https://appshunter.io/ios/app/dinero-by-tetsuolab/id6784042048) - [DocVault by TetsuoLab](https://appshunter.io/ios/app/docvault-by-tetsuolab/id6785948076) All apps by Hector Pardal Arias: https://appshunter.io/developer/1896777517 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*