Sigma Mini vs GoldCalculator Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sigma Mini
This utility app connects to a specific hardware device for enhanced functionality. It allows users to interact with and control the connected device, providing a seamless experience for its intended purpose. The application is designed for users who own the associated hardware.
- Connects to Sigma Metalytics Mini
- Device interaction and control
- Enhanced functionality for users
- Seamless user experience
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App to be used with the Sigma Metalytics Mini
GoldCalculator Pro
This app instantly calculates the value of gold and silver using real-time market prices. It supports various karats and silver purities, allowing input in grams or pennyweight. Adjust buy/sell margins and refresh prices with a single tap.
- Live gold & silver prices
- Supports multiple karats and silver purities
- Input weight in grams or pennyweight
- Adjustable buy/sell margin
- One-tap spot price refresh
- Dark Mode support
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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
Screenshots
Verdict
Sigma Mini and GoldCalculator Pro both sit at 5.0 stars, but that hides the real split: 100% of GoldCalculator Pro's written reviews are positive against 38% of Sigma Mini's. GoldCalculator Pro also leads on update cadence (every 4 days vs every 2 months). Sigma Mini's advantage is iOS requirement (11.0 vs 18.4). On price, rating, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Sigma Mini against 5.0 for GoldCalculator Pro. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews are what separate them: 38% of Sigma Mini's written reviews are positive against 100% of GoldCalculator Pro's.
Sigma Mini ships an update every 2 months, GoldCalculator Pro every 4 days. The most recent releases landed on October 1, 2026 and September 21, 2026 respectively.
| Parameter | Sigma Mini | GoldCalculator Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (2 ratings) |
| Positive reviews | 37.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 2 |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 18.4 |
| Further details — not scored | ||
| Size | 6 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Richard Bessette | Alaa Shaban |
Customer experience
Sigma Mini
GoldCalculator Pro
In-app purchases
Sigma Mini
No in-app purchases
GoldCalculator Pro
No in-app purchases
Questions
Is Sigma Mini free?
Is GoldCalculator Pro free?
Which has better reviews, Sigma Mini or GoldCalculator Pro?
Do Sigma Mini or GoldCalculator Pro have ads?
Which is updated more often, Sigma Mini or GoldCalculator Pro?
Other comparisons
