Comparison

Coin Identifier vs DecaGram

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

Head to head
About

Coin Identifier

Instantly identify, grade, and value your coins with AI. Simply take a photo to get detailed analysis, market valuations, and organize your collection. Discover the hidden value in your coin finds.

Highlights
  • Instant coin identification
  • AI-powered grading
  • Real-time market valuation
  • Digital collection vault
  • PDF appraisal reports
  • Variety and error detection
Features
Read full description

Turn your iPhone into a world-class numismatic expert with NumisAI Pro. Whether you’re a seasoned collector or just found a curious coin in your pocket change, NumisAI Pro uses advanced AI Detective Engine technology to identify, grade, and value your coins instantly. Simply snap a photo, and our Forensic AI analyzes the portrait, inscriptions, and mint marks to provide a museum-grade identification. From ancient Roman denarii and the Kingdom of Armenia’s Tigranes the Great tetradrachms to modern US Quarters and rare world coins, NumisAI Pro identifies them all. KEY FEATURES: • INSTANT IDENTIFICATION: Identify 100,000+ types of coins with a single photo. • AI GRADING: Receive an estimated Sheldon Scale or International grade based on visual wear and tear. • MARKET VALUATION: Get real-time price ranges based on recent auction data and global market trends. • THE DIGITAL VAULT: Securely organize and track your entire collection in one high-res digital gallery. • PDF APPRAISAL REPORTS: Generate and share professional valuation certificates for your rare finds. • LIVE MARKET TICKERS: Track the spot prices of Gold, Silver, and Platinum to see how they affect your portfolio value. • VARIETY & ERROR DETECTION: Our AI hunts for Doubled Dies, Clipped Planchets, and rare mint varieties that others miss. Whether you are hunting for "W" mint marks in your change or managing an elite ancient portfolio, NumisAI Pro is the ultimate tool for every collector. Start your 3-day free trial today and discover the hidden value in your collection! Disclaimer: All valuations are estimates based on AI visual analysis and historical data. For legal or insurance purposes, we recommend consulting a certified human appraiser. Terms of Use (EULA): https://languagekitvocabulary.wordpress.com/terms-of-use-eual/ Terms of Service: https://languagekitvocabulary.wordpress.com/about/ Privacy Policy: https://languagekitvocabulary.wordpress.com/privacy-policy/

About

DecaGram

Track the live value of your 24K gold jewelry collection. Monitor individual pieces and your total holdings against real-time market prices. Earn gold dividends and access digital certificates of authenticity for your verified pieces.

Highlights
  • Live 24K gold pricing
  • Track individual jewelry piece value
  • Monitor total collection value over time
  • Earn real gold dividends
  • Digital certificate of authenticity
  • Price alerts (coming soon)
Features
Read full description

Hold your gold in your hand — and watch its value live. DecaGram is the companion app for owners of Deca Annuli 24K gold jewelry. Every piece is solid 999 fine gold, priced live to the gram, so you always know exactly what your collection is worth. LIVE 24K PRICING Watch the spot price of gold update minute by minute, and see the live value of every piece you own move with the market — the way you'd track a stock. YOUR HOLDINGS, TRACKED Log each piece and see its current value, your total weight, and your collection's value over time — from one month to one year. EARN REAL GOLD — THE TEN RINGS Every verified Deca Annuli piece moves you up the Ten Rings and earns real 24K gold dividends — gold set aside in your name to put toward your next piece. CERTIFICATE OF AUTHENTICITY Every piece carries a digital certificate of authenticity — its purity, weight, and a scannable link anyone can use to confirm it's a genuine Deca Annuli piece. PRICE ALERTS Get notified the moment gold hits a price you're watching. (Coming soon on iOS.) DecaGram turns your jewelry into something you can track, treasure, and pass down — the living record of your gold.

Screenshots

Coin Identifier4 screens
DecaGram4 screens

Verdict

The call

The clearest difference is in-app purchases: DecaGram at none against Coin Identifier's 3. Coin Identifier's advantage is update cadence (every 3 days vs every 10 days) and ratings volume (4 vs 1). On price, rating, ads 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. Coin Identifier sells 3 in-app purchases, starting at $5.99 per 7 days. DecaGram asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Coin Identifier against 5.0 for DecaGram. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

Coin Identifier ships an update every 3 days, DecaGram every 10 days. The most recent releases landed on October 28, 2026 and October 17, 2026 respectively.

Scorecard4 real differences · 6 level
Coin Identifier versus DecaGram: the parameters behind the verdict, then further details
ParameterCoin IdentifierDecaGram
PriceFreeFree
Rating5.0 (4 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings4 — better1
Update frequencyEvery 3 days — betterEvery 10 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.615.0 — better
Further details — not scored
Size36 MB7 MB
Age rating4+4+
DeveloperKnyaz HarutyunyanMark Ostroski

Customer experience

Coin Identifier

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

DecaGram

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Coin Identifier

Subscriptions3
  • Premium Weekly3 Days trial$5.997 Days
  • Premium Monthly$9.991 Month
  • Premium Yearly$59.991 Year
None

DecaGram

No in-app purchases

Questions

Is Coin Identifier free?
Coin Identifier is free to download, with in-app purchases available.
Is DecaGram free?
DecaGram is free to download, with no in-app purchases.
Which has better reviews, Coin Identifier or DecaGram?
Coin Identifier and DecaGram are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.
Do Coin Identifier or DecaGram have ads?
Neither Coin Identifier nor DecaGram shows ads.
Which is updated more often, Coin Identifier or DecaGram?
Coin Identifier ships an update every 3 days, and DecaGram every 10 days. Most recently, Coin Identifier was updated on October 28, 2026 and DecaGram on October 17, 2026.

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