# Certi vs Sterling

The clearest difference is update cadence: Certi at every 3 days against Sterling's every 9 days. Certi also leads on iOS requirement (15.1 vs 26.5). On price, ads, in-app purchases and device support there is nothing between them.

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

Certi ships an update every 3 days, Sterling every 9 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Certi | Sterling |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/certi-lock/id6745152014/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 9 days |
| Monetization | Free | — |
| Size | 39 MB | 7 MB |
| Requires iOS | **15.1** | 26.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Scottsdale Mint LLLP](https://appshunter.io/developer/1078693720) | [TIEN NGUYEN KHAC](https://appshunter.io/developer/6772946491) |

## What reviewers say

### 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


### Sterling

[App page](https://appshunter.io/ios/app/sterling-precious-metals/id6772946489)

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

**In-app purchases:** none


## Frequently asked questions

### Is Certi free?

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

### Is Sterling free?

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

### Do Certi or Sterling have ads?

Neither Certi nor Sterling shows ads.

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

Certi ships an update every 3 days, and Sterling every 9 days. Most recently, Certi was updated on October 24, 2026 and Sterling on October 25, 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.*