Comparison

KrypCity vs Double Holo

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

Head to head
About

KrypCity

A Web3 marketplace for purchasing real estate, vehicles, and other items using cryptocurrency. Earn rewards on every transaction through CryptoTradingFund.

Highlights
  • Buy real estate with cryptocurrency
  • Purchase cars with cryptocurrency
  • Shop for various items
  • Earn rewards on purchases
  • Powered by CryptoTradingFund
  • Web3 marketplace
Features
Read full description

KrypCity is a Web3 marketplace where you can buy real estate, cars, and more with cryptocurrency, and earn free rewards with every purchase powered by the CryptoTradingFund.

About

Double Holo

A modern marketplace and intelligence platform for trading card collectors. Buy and sell cards with low fees, and utilize premium tools for market analysis, price forecasting, and collection management. Stop guessing and start making confident collecting decisions.

Highlights
  • Low seller fees (4.9%)
  • Curated card recommendations
  • Reddit sentiment analysis
  • Pack value analysis
  • Grading ROI analysis
  • AI-powered price forecasting
  • Real-time portfolio tracking
Features
Currently charting
Read full description

Scan any Pokémon card and see its live market price in seconds. Then do what no other card scanner can: sell it, track it, and get alerts, all in one app, with a 4.9% seller fee. THE SCANNER • Point your camera at any raw card or graded slab and get an instant match • Live market price, sales history, and PSA 10 comps on every scan • Built for volume: scan binders, lots, and entire collections fast • The FASTEST Pokemon Card Scanner in the world. Raw cards have a 50ms average scan time. THE PRICE TRACKER • Prices from real sales, refreshed daily • Full price history charts for raw and graded copies • Watchlist any card and get alerts when its price moves THE MARKETPLACE • List a card for sale the moment you scan it • 4.9% seller fee (minimum $1), the lowest of any major card marketplace • Secure Stripe checkout with buyer and seller protection PREMIUM TOOLS • AI Picks: cards the data says to watch, with the reasoning shown • Sentiment: what collectors are saying across Reddit, tracked daily • Pack Value: expected value for every set before you rip • Grading ROI: what a card is worth graded vs raw, minus the fees • Market Research: deep charts, comps, and sales data for any card • Card Alerts: your targets, watched around the clock VENDOR HUB Built for card shops and show vendors: • Point-of-sale for card shows, with split payments • Inventory management with printable price labels • Deal tracking with profit built in • Shopify and eBay sync YOUR COLLECTION, FREE Track your collection with Shiny, included free: every card, graded or raw, with its live value. Join the collectors and vendors who buy, sell, and track on Double Holo every day. Download free and scan your first card in under a minute. Terms and conditions: https://doubleholo.com/terms

Screenshots

KrypCity4 screens
Double Holo4 screens

Verdict

The call

The clearest difference is rating: Double Holo at 4.8 against KrypCity's 1.0. Double Holo also leads on ratings volume (1.6K vs 1) and chart position (#14 vs unranked). KrypCity's advantage is in-app purchases (none vs 10) and update cadence (daily vs weekly). On price, review sentiment, 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. Double Holo sells 10 in-app purchases, starting at $2.99 per 7 days. KrypCity asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Double Holo holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Double Holo has 1.6K ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 50% and 49% positive.

UpkeepUpdate frequency

KrypCity ships an update daily, Double Holo weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard7 real differences · 4 level
KrypCity versus Double Holo: the parameters behind the verdict, then further details
ParameterKrypCityDouble Holo
PriceFreeFree
Rating1.0 (1 ratings)4.8 (1.6K ratings) — better
Positive reviews50.0% of reviews — better49.2% of reviews
Number of ratings11.6K — better
Update frequencyDaily — betterWeekly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank—#14 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.4 — better16.0
Further details — not scored
Size40 MB246 MB
Age rating17+12+
DeveloperWeb3 Dev CompanyDouble Holo Inc.

Customer experience

KrypCity

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Double Holo

All ratings877 ratings
Positive92.7%
Neutral1.7%
Negative5.6%
Written reviews59 reviews
Positive49.2%
Neutral8.5%
Negative42.4%

In-app purchases

None

KrypCity

No in-app purchases

10 purchases

Double Holo

Subscriptions10
  • Smart Collector$2.997 Days
  • Serious Collector$5.997 Days
  • Smart Collector Monthly$9.991 Month
Show 7 more
  • Essentials Monthly3 Days trial$14.991 Month
  • Serious Collector Monthly$22.991 Month
  • Vendor Basic$24.991 Month
  • Growth Monthly3 Days trial$26.991 Month
  • Smart Collector Annual3 Days trial$59.991 Year
  • Serious Collector Annual3 Days trial$199.991 Year
  • Vendor Basic14 Days trial$199.991 Year

Questions

Is KrypCity free?
KrypCity is free to download, with no in-app purchases.
Is Double Holo free?
Double Holo is free to download, with in-app purchases available.
Which has better reviews, KrypCity or Double Holo?
Double Holo is rated higher. KrypCity averages 1.0 out of 5 from 1 ratings, while Double Holo averages 4.8 from 1.6K ratings.
Do KrypCity or Double Holo have ads?
Neither KrypCity nor Double Holo shows ads.
Which is updated more often, KrypCity or Double Holo?
KrypCity ships an update daily, and Double Holo weekly. Most recently, KrypCity was updated on October 30, 2026 and Double Holo on October 31, 2026.

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