Certi vs Sterling
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Certi
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.
- Synthetic DNA authentication
- Barcode scanning
- Factory-sealed product photos
- Tamper-evident seal verification
- Collection tracking
- Instant results
- Dark mode
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Worried about fake gold or silver? You're not alone. Every year, investors lose millions to counterfeit precious metals. Certi-Lock® changes everything. Instant Authentication, Total Peace of Mind Developed by Scottsdale Mint - the same company trusted by central banks in 40+ countries - Certi-Lock® is the only app that verifies precious metals using actual synthetic DNA technology. How It Works (It's Simple!): Scan the barcode on your Certi-Lock® card Instantly see factory-sealed photos of YOUR exact product Verify DNA authentication & tamper-evident seals Done! Know your investment is 100% genuine What Makes Certi-Lock® Different: - DNA Technology - Not just surface verification, but lab-grade authentication - Factory Photos - See your exact item as it was sealed at the mint - No Registration - Start verifying immediately - Track Collections - Organize and monitor all your precious metals - Lightning Fast - Results in under 2 seconds - Dark Mode - Easy on your eyes during late-night trading Trusted by: Individual investors in 40+ countries Precious metals dealers worldwide IRA custodians and vault storage facilities Anyone serious about protecting their wealth From Scottsdale Mint: ISO 9001:2015 certified. IRA approved. Manufacturing excellence since 2008. Download now and verify your first item in under 30 seconds.
Sterling
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Sterling is a precious-metals stack tracker built for silverbugs and goldbugs who hold physical bullion for the long haul. Log every pickup - coins, bars and rounds - and Sterling does the math that matters to a stacker: - Melt value of each holding at the latest available spot - Premium you paid over spot, and how much of it you are still carrying - Where the whole stack sits right now, up or underwater, in your chosen currency - Break-even spot per item, with the dealer spread baked in, so you know where spot needs to sit to sell back whole WHY STACKERS LIKE IT - It speaks your language: stack, pickup, melt, premium, AGW and ASW. - Every figure traces back to what you actually paid, down to the fees. - Record a sale, set the dealer spread, and see your realized P&L. - Track in USD, CAD, GBP, AUD and more; switch the display currency any time without touching your records. PRIVATE BY DESIGN - Fully offline. No account, no sign-in, no backend. - No ads and no trackers. The only network activity is an optional spot-price refresh. - Your stack lives on your device and, if you choose, syncs only through your own private iCloud.
Screenshots
Verdict
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.
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.
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.
| Parameter | Certi | Sterling |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 3 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 26.5 |
| Further details — not scored | ||
| Size | 39 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Scottsdale Mint LLLP | TIEN NGUYEN KHAC |
In-app purchases
Certi
No in-app purchases
Sterling
No in-app purchases









