Comparison

GM10 vs ref

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

Head to head
About

GM10

Connect with fellow trading card enthusiasts on a dedicated social platform. Discover news, engage with the community, buy, sell, and even run your own brand shop. Find local shows to bridge the generation gap in collecting.

Highlights
  • Community engagement and news
  • Find local trading card shows
  • User profiles with transaction history
  • Online buying and selling
  • In-app randomizer for breaks
  • Brand shops for selling merchandise
Features
Read full description

GM10 is the social platform for everything trading cards. We’re collectors who have built a collector-focused application that connects the trading cared hobby by bringing the best of everything into one platform. These collector-focused tools include: - We’re community first, our goal is to showcase the best parts of the hobby by being the primary place for members of the community to engage with one another, learn more about the hobby with breaking news and interact with the community by posting about it. - The generation gap in trading is real, with our fun and nostalgic design, we’re looking to engage those young and old from wherever you call home in one place, you can even find out where the nearest upcoming show is going down so you can better bridge that divide. - Being community-first always, everyone on GM10 has a profile that they can create to help put a face/avatar to the name. We hope both parties on a deal can learn about each other’s interests, where they call home, their collection and even their previous transactions. - Say so-long to only having two options on an online marketplace, you can buy and sell your cards online with just a few clicks. - Come break with us, we’ve developed an in-application randomizer that takes the pain away from your breaks. - GM10 unlocks the next level of collecting by enabling you to make collectibles your business. With a sleek marketplace that is designed with the collector in mind we hope you’ll have a very profitable experience on the app for years to come - We’ve dedicated a significant amount of our development to building out Brand Shops, you can establish your own shop where you and your friends/business partners can collaborate to sell your own branded merchandise or products to the broader market. We hope you will join us and help build the community as we all look to slab it, stream it, sell it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

ref

This app helps referees master the inner game through reflection, presence, and practice. It offers educational resources, game film breakdowns, and live events to sharpen skills and deepen understanding. Built by officials, for officials, it fosters a community for growth and networking.

Highlights
  • Training videos and game film analysis
  • Expert breakdowns
  • Live webinars and mentoring
  • On-demand sessions
  • Interactive space for confidence and awareness
  • Community for questions and feedback
Features
Read full description

Welcome to ref-ology —Through reflection, presence, and practice, ref-ology helps referees master the inner game so they can serve the outer game with excellence. Our mission is to create a movement of officials who prioritize integrity in performance and who view the game as a pathway for lifelong development. We are here to develop referees who call the game and embody the spirit of it: cultivating consistency, communication, and clarity in every moment. Inside the app, you’ll find a growing library of educational resources, game film breakdowns, live events, and vibrant conversations designed to help you sharpen your skills, deepen your understanding of the game, and thrive in your officiating journey. Built by officials, for officials, ref-ology offers an inclusive space where you can level up, ask questions, get feedback, become situationally competent and grow your network —all in one place. Key Features: + Training videos, game film analysis, and expert breakdowns. + Live webinars, mentoring opportunities and on-demand sessions from experienced officials and other key influencers inside the sports ecosystem. + A dedicated and interactive space to grow your confidence and mastery of on-court awareness. Whether you’re looking to get started or aiming to refine your approach at the highest level, ref-ology is where better officials are made.

Screenshots

GM104 screens
ref4 screens

Verdict

The call

The clearest difference is in-app purchases: ref at none against GM10's 8. ref also leads on ads (none vs shown) and rating (4.9 vs 4.7). On price, ratings volume, update cadence 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. GM10 sells 8 in-app purchases, starting at $14.99 per month. ref asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ref holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 22 and 9 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 6 level
GM10 versus ref: the parameters behind the verdict, then further details
ParameterGM10ref
PriceFreeFree
Rating4.7 (22 ratings)4.9 (9 ratings) — better
Positive reviews94.4% of reviews—
Number of ratings22 — better9
Update frequencyWeeklyWeekly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhoneiPhone, iPad — better
Requires iOS18.017.0 — better
Further details — not scored
Size138 MB126 MB
Age rating17+9+
DeveloperMatthew BillmanRef-ology

Customer experience

GM10

All ratings22 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews18 reviews
Positive94.4%
Neutral0.0%
Negative5.6%

ref

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

8 purchases

GM10

Subscriptions2
  • Plus Monthly$14.991 Month
  • Premium$24.991 Month
One-time6
  • BLUE$1.99
  • RED$3.99
  • PURPLE$7.99
Show 3 more
  • GOLD$9.99
  • BLACK$14.99
  • GEM$19.99
None

ref

No in-app purchases

Questions

Is GM10 free?
GM10 is free to download, with in-app purchases available.
Is ref free?
ref is free to download, with no in-app purchases.
Which has better reviews, GM10 or ref?
ref is rated higher. GM10 averages 4.7 out of 5 from 22 ratings, while ref averages 4.9 from 9 ratings.
Do GM10 or ref have ads?
GM10 shows ads; ref does not.
Which is updated more often, GM10 or ref?
GM10 ships an update weekly, and ref weekly. Most recently, GM10 was updated on October 15, 2026 and ref on October 11, 2026.

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