COMC vs World Stamp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
COMC
This app provides a secure and convenient platform for buying, selling, and collecting sports, Marvel, and TCG cards. It offers a vast marketplace with millions of cards, allowing users to list items for sale, manage offers, and even submit cards for grading.
- Buy and sell cards
- Collect cards
- Over 30 million cards in marketplace
- Card vault and storage
- Cross-listing to eBay
- Third-party grading submissions
- Inventory manager
Read full descriptionHide full description
COMC – Check Out My Cards The Ultimate Card Marketplace | Buy, Sell & Collect The safe and easy way to buy and sell cards! Searching for sports, Marvel or TCG cards? Check out COMC’s bustling marketplace of over 30 million cards with inventory changing by the minute! The original vault- Since 2005 COMC has provided collectors with a safe and easy way to buy, sell, collect and resell sports and non-sports cards. Collectors may purchase and relist cards for sale in only a few clicks without taking physical ownership. Set a fixed price to instantly list your card or submit your card to Auction, both options feature cross-listing to eBay. Or, add purchased cards to your Inventory over time and make one shipment request when you are ready to receive the cards. Cards are consigned by users, then stored and shipped from our facility. The COMC team verifies authenticity, accurately lists each card and provides high-quality scans. Upon request for shipment home or submission to grading, our experienced team expertly handles and packs your cards. Our service is ideal for hobbyists looking to avoid the hassle of housing, listing and shipping individual cards. International collectors will benefit as cards from multiple sellers will be conveniently sent in one shipment. THIRD-PARTY GRADING COMC is pleased to partner with some of the hobby’s premier third-party grading services to allow for grading submissions through our platform. Click to submit cards to any of our third-party grading partners, and our expert team will provide white-glove service as we prepare and submit the card to your desired grading service. INVENTORY MANAGER Control your inventory from our centralized Inventory Manager page. Update the pricing of a card instantly or submit a card already in your COMC account to Third-Party grading from this page. Review all cards in your account and check the list price of your items against other copies for sale. App Features: Saved Searches- Do you have a favorite team, player, set or other specifics you are constantly hunting for? Our Saved Search feature allows you to run your desired search at the click of a button! Recently Viewed- Quickly and easily browse cards that you have recently viewed with this dedicated section on our app. Manage Offers- Incoming and outgoing offers are clearly displayed and are easily monitored from our Manage Offers section. Send offers and navigate deals!
World Stamp
Read full descriptionHide full description
WorldStamp helps you turn the places you go and the things you do into a personal passport of memories. Discover nearby experiences, save stamps you want to complete, and mark real moments as finished with photos, notes, and dates. Whether it is a cafe you loved, a city you explored, a local food stop, or a meaningful travel memory, WorldStamp helps you keep it in one place. With WorldStamp, you can: discover places and experience-based stamps save and complete stamps in your personal passport add photos, notes, and dates to your memories organize memories by category keep selected stamps private revisit your journey through a growing collection of real experiences WorldStamp is designed for people who want to remember more than just where they went. It is a simple way to collect experiences, not things. Explore, stamp, remember.
Screenshots
Verdict
The clearest difference is ads: World Stamp at none against COMC's shown. World Stamp also leads on iOS requirement (15.1 vs 17.6). On price, update cadence, 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.
COMC ships an update monthly, World Stamp every 2 months. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | COMC | World Stamp |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (102 ratings) — better | — |
| Positive reviews | 23.1% of reviews | — |
| Number of ratings | 102 — better | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 39 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | COMC | Furkan Ozgurluk |
Bugs and requests
COMC
Reported bugs
42 issues- Saved search function broken
- App freezes when clicking saved search
- App won't allow sign in after password reset
- App freezes on sign-in screen
- App has error when loading dashboard
Show 37 moreShow fewer
- App lags constantly
- App crashes
- App is glitchy
- App kicks user out frequently
- App not loading
- Spinning ball of death
- Cannot add funds to account
- Cannot login even when logged in
- Cannot flip all photos at once
- App is slow
- Features not available on app
- Terrible uptime and performance
- App refreshes and goes back to login screen
- App buffers
- App takes 5 minutes to open
- App is barely functional
- App killed the joy of using the service
- App never loads
- Cannot figure out how to list cards
- App requires phone upgrade
- App closes when opened
- App closes after sign in
- Cannot remove items from watch list
- Cannot withdrawal cards or money
- Not getting verification codes
- Saved searches have constant errors
- Dashboard not on app
- Cannot do anything other than see/accept/decline offers
- Search feature not great
- Clicking dashboard redirects to website
- App crashes after 2-3 seconds
- App opens for 2 seconds and shuts off
- App keeps closing after hitting search
- Refreshing offer screens goes blank or half updates
- Cannot add item to watchlist
- Password expired message even though works on website
- Captcha still present
Requested features
15 requests- Add dashboard feature to the app
- Allow removal of items from watch list
- Fix watch list functionality
- Add COMC challenge to the app
- Mobile dashboard
Show 10 moreShow fewer
- Add dashboard within the app
- Improve UI/UX
- Fix saved search functionality
- Fix login issues
- Add ability to see card backs
- Improve search functionality
- Add ability to filter by sport, year, and set
- Show shipping costs
- Allow adding items to watchlist
- Fix password expiration issues
World Stamp
Not enough reviews yet to summarise bugs or requests.
In-app purchases
COMC
No in-app purchases
World Stamp
No in-app purchases









