# Metalynx vs Certi

The clearest difference is rating: Metalynx at 4.9 against Certi's 3.8. Certi's advantage is update cadence (every 3 days vs every 20 months). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Metalynx holds the better App Store score, 4.9 against 3.8. Both are backed by a comparable volume of ratings — 8 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Metalynx ships an update every 20 months, Certi every 3 days. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Metalynx | Certi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (8 ratings)](https://appshunter.io/ios/app/metalynx/id613591018/reviews)** | [3.8 (6 ratings)](https://appshunter.io/ios/app/certi-lock/id6745152014/reviews) |
| Number of ratings | **8** | 6 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 3 days** |
| Monetization | Free | Free |
| Size | 41 MB | 39 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kitco Metals Inc](https://appshunter.io/developer/298687561) | [Scottsdale Mint LLLP](https://appshunter.io/developer/1078693720) |

## What reviewers say

### Metalynx

[App page](https://appshunter.io/ios/app/metalynx/id613591018)

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.

**Highlights:** 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)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Certi

[App page](https://appshunter.io/ios/app/certi-lock/id6745152014)

This app uses synthetic DNA technology to authenticate precious metals, providing instant verification of gold and silver investments. Scan a card to see factory-sealed photos and confirm the authenticity of your items, ensuring peace of mind for investors.

**Highlights:** Synthetic DNA authentication, Barcode scanning, Factory-sealed product photos, Tamper-evident seal verification, Collection tracking, Instant results, Dark mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Metalynx free?

Metalynx is free to download, with no in-app purchases.

### Is Certi free?

Certi is free to download, with no in-app purchases.

### Which has better reviews, Metalynx or Certi?

Metalynx is rated higher. Metalynx averages 4.9 out of 5 from 8 ratings, while Certi averages 3.8 from 6 ratings.

### Do Metalynx or Certi have ads?

Neither Metalynx nor Certi shows ads.

### Which is updated more often, Metalynx or Certi?

Metalynx ships an update every 20 months, and Certi every 3 days. Most recently, Metalynx was updated on November 1, 2026 and Certi on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*