Ounces vs Certi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ounces
Track your precious metals portfolio with this app designed for collectors. Monitor prices, market value, and the weight of your holdings. Set personal goals and compare your stack to others.
- Track precious metals holdings
- Monitor prices and ratios
- View market value and weighting
- Compare stack size with whale scale
- Set portfolio goals
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The premier precious metals app designed by stackers for stackers. This is the indispensable app to keep track of your stack. Check prices and ratios, view the market value and weighting of your stack, see how you stack up using the whale scale, set goals, and more. This is your wealth, measured with Ounces.
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.
Screenshots
Verdict
The clearest difference is ads: Certi at none against Ounces's shown. Certi also leads on rating (4.2 vs 3.8) and update cadence (every 3 days vs fortnightly). On price, review sentiment, ratings volume and in-app purchases 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 holds the better App Store score, 4.2 against 3.8. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Ounces ships an update fortnightly, Certi every 3 days. The most recent releases landed on September 27, 2026 and October 24, 2026 respectively.
| Parameter | Ounces | Certi |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (6 ratings) | 4.2 (5 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 6 — better | 5 |
| Update frequency | Fortnightly | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 6 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Tyler Marsh | Scottsdale Mint LLLP |
Customer experience
Ounces
Certi
In-app purchases
Ounces
No in-app purchases
Certi
No in-app purchases









