Comparison

DDW SafeKeeping vs Certi

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DDW SafeKeeping

Features
Read full description

The DDW SafeKeeping App provides an extra layer of security for the digital securities held in your Deutsche Digitale Wertpapiere account. With this DDW SafeKeeping App as a second factor, you confirm the secure transfer of digital securities. SEND DIGITAL SECURITIES SECURELY Conveniently initiate your transfers in your Deutsche Digitale Wertpapiere account and confirm them in your DDW SafeKeeping App. This offers you extra convenience as well as more security. ENCRYPTED AND SECURE A secure key is generated on your smartphone that is used to encrypt the transfer. Once your smartphone is linked to your Deutsche Digitale Wertpapiere account, third parties cannot access your digital securities. EASY SETUP We guide you through the entire setup process in just a few steps. SIMPLE RECOVERY PROCESS We help you recover your DDW SafeKeeping App in case of device change or PIN loss.

About

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.

Highlights
  • Synthetic DNA authentication
  • Barcode scanning
  • Factory-sealed product photos
  • Tamper-evident seal verification
  • Collection tracking
  • Instant results
  • Dark mode
Features
Read full description

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

DDW SafeKeeping3 screens
Certi4 screens

Verdict

The call

The clearest difference is update cadence: Certi at every 3 days against DDW SafeKeeping's every 7 months. Certi also leads on iOS requirement (15.1 vs 18.5). 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

DDW SafeKeeping ships an update every 7 months, Certi every 3 days. The most recent releases landed on October 1, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 8 level
DDW SafeKeeping versus Certi: the parameters behind the verdict, then further details
ParameterDDW SafeKeepingCerti
PriceFreeFree
Rating—4.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—4 — better
Update frequencyEvery 7 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.515.1 — better
Further details — not scored
Size53 MB39 MB
Age rating17+4+
DeveloperCashlink Technologies GmbHScottsdale Mint LLLP

In-app purchases

None

DDW SafeKeeping

No in-app purchases

None

Certi

No in-app purchases

Questions

Is DDW SafeKeeping free?
DDW SafeKeeping is free to download, with no in-app purchases.
Is Certi free?
Certi is free to download, with no in-app purchases.
Do DDW SafeKeeping or Certi have ads?
Neither DDW SafeKeeping nor Certi shows ads.
Which is updated more often, DDW SafeKeeping or Certi?
DDW SafeKeeping ships an update every 7 months, and Certi every 3 days. Most recently, DDW SafeKeeping was updated on October 1, 2026 and Certi on October 12, 2026.

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