Metalynx vs Stack Heavy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Metalynx
This app helps precious metal professionals instantly calculate dimensions and weights for gold, silver, and platinum items. It supports multiple purity levels, units of measurement, and provides live market prices and charts.
- Automatic dimensional calculations for precious metals
- Supports multiple purity levels for gold, silver, platinum
- Customizable units for weight and dimensions
- Live market prices and London Fix data
- Technical and historical charts
- Multi-language support (English, French)
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Designed for everyone who works with precious metals, Kitco Metals Inc.’s free Metalynx app automatically calculates the dimensions of gold, silver and platinum items. It can handle three purity levels of gold, two of silver and two of platinum. Weights can be expressed in user-selectable units. For standard precious metal mill products, it can automatically determine weight, length, diameter or thickness given the other dimensions. Conversions and calculations are performed instantly using customizable criteria. Here are some of the salient features of this powerful little app: •Three purity levels for gold, two for silver and two for platinum •Automatic dimensional calculations for common jewelry mill products including sheets; round and square tubes; and round, half-round, square and rectangular wires and half-round wires •Weights in troy ounces, grams, kilograms or pennyweights •Dimensions in inches, millimeters or gauges (as applicable) •Live market prices and London Fix prices for gold, silver and platinum from Kitco.com, the world’s #1 precious metals information website •Prices customizable with three units of weight and 14 currencies •Full-screen rotatable technical and historical charts •English and French language options
Stack Heavy
This finance app provides real-time precious metal prices and dealer premium tracking. It offers tools to calculate melt values and premiums, helping users find the best deals on bullion and coins. No account or subscriptions are needed.
- Live spot prices for precious metals
- Dealer premium tracking
- Melt value calculator
- Premium calculator with shipping/fees
- Automatic updates
- No account required
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Stack Heavy is a free precious metals toolkit built by Silver Seeker for stackers who want real data without the fluff. Track live spot prices for silver, gold, platinum, palladium, and copper with day change indicators and the gold/silver ratio. Monitor dealer premiums daily across multiple major bullion dealers to see who has the best prices on Silver Eagles, Maples, rounds, and gold. Calculate melt values for bullion, junk silver, constitutional coins, proofs, war nickels, and Canadian silver. Run quick calculations for junk silver bags, sterling silver, and scrap gold. Use the premium calculator to find your true cost over spot including shipping and fees. Every tool updates automatically with live spot prices. No account required, no ad networks, no paywalls, no subscriptions. Stack Heavy is the app Silver Seeker actually uses. Built for stackers, by a stacker.
Screenshots
Verdict
The clearest difference is update cadence: Stack Heavy at weekly against Metalynx's every 20 months. On price, rating, review sentiment and ratings volume 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 — 4.9 for Metalynx against 5.0 for Stack Heavy. Both are backed by a comparable volume of ratings — 8 and 12 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Metalynx ships an update every 20 months, Stack Heavy weekly. The most recent releases landed on September 24, 2026 and September 20, 2026 respectively.
| Parameter | Metalynx | Stack Heavy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (8 ratings) | 5.0 (12 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 8 | 12 — better |
| Update frequency | Every 20 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 41 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Kitco Metals Inc | Silver Seeker |
Customer experience
Metalynx
Stack Heavy
In-app purchases
Metalynx
No in-app purchases
Stack Heavy
No in-app purchases
Questions
Is Metalynx free?
Is Stack Heavy free?
Which has better reviews, Metalynx or Stack Heavy?
Do Metalynx or Stack Heavy have ads?
Which is updated more often, Metalynx or Stack Heavy?
Other comparisons
