Ludex vs CollX vs Cards AI 2026: Which Card Scanner Is Best?

Short answer: Ludex is the most accurate scanner for parallels and variations. CollX has the biggest free tier and a built-in marketplace. Cards AI shows you the real eBay sold listings behind every price so you can verify the number yourself. Pick Ludex for accuracy, CollX for free and social, and Cards AI for verifiable pricing.

Ludex, CollX, and Cards AI all scan a card and hand you a value, but they solve different problems. Here is the honest breakdown of who each one is for.

A quick disclosure before I go further: I built Cards AI. I am a solo developer in New Jersey and I have been collecting for 20 years. I am going to be straight about where the other two beat me, because a comparison that says "my app wins everything" is worthless to you and obvious to Google.

Ludex: the most accurate scanner

Ludex has the strongest reputation in the hobby for correctly identifying cards, especially parallels, refractors, and numbered variations that trip up other scanners. In hands-on tests it consistently nails the specific parallel instead of just the base card, which is the entire game if you collect modern inserts.

It pulls values from eBay completed sales and other marketplaces, lets you build custom binders, and tracks set completion. It carries a 4.7 out of 5 rating across 16,000-plus iOS reviews, which is a real trust signal you cannot fake. It runs on both iOS and Android.

Where it falls short: the free tier is more of a trial, and Premium runs around $19.99 a month, which is the steepest of the three. It also shows you a price without showing you the sales that price came from. You see "$94" and you trust it.

Pick Ludex if parallel accuracy is your top priority and you do not mind paying $20 a month for it.

CollX: the biggest free tier and a marketplace

CollX is the easiest on-ramp. The free tier covers most casual collectors, the interface is clean, and it has a built-in marketplace plus social features that make it feel like a hobby app instead of a tool. Its database is over 20 million cards, it has a large active community, and it runs on iOS and Android. The paid tier runs around $9.99 a month.

Where it falls short: CollX prices tend to run high because the app blends marketplace asking prices in with actual sold data, so the number you see is often above what a card really sells for. It also misses parallels more often than Ludex, sometimes calling a Silver Prizm just a "Prizm." For deeper detail I broke this down in my CollX vs Ludex post.

Pick CollX if you want a free app with a marketplace and you mostly collect modern base cards or want to buy and sell socially.

Cards AI: see the actual sold comps

Here is the honest, narrow thing I built Cards AI to do. Ludex and CollX both give you a price and ask you to trust their algorithm. Cards AI pulls real eBay sold listings live on every scan and shows you the 15 most recent comps, each with its sold price, the actual sold date, and a link to the listing. If the number looks wrong, you can check it in 10 seconds instead of trusting a black box.

It identifies the card with AI, gives an AI condition grade as a rough pre-grade estimate, and supports baseball, basketball, football, Pokemon, Magic, and Yu-Gi-Oh. It is $59.99 a year, which works out to about $5 a month, with a 7-day free trial.

Where it falls short, and I mean this: it is brand new in 2026, so it does not have the user base or review count of the other two. It is iOS only right now, with Android coming. There is no marketplace. And on AI grading, I will be honest that AI grading across this entire category is mostly oversold. It is a useful gut check for whether a card might be worth submitting, not a replacement for PSA or BGS. Anyone promising you a guaranteed grade from a phone photo is selling you something. I put more detail on that in my best card grading apps writeup.

Pick Cards AI if you want to verify pricing against real sold listings instead of trusting an algorithm, and you are on iOS.

Which one should you use?

Choose Ludex if you collect modern parallels and refractors and accuracy is everything.

Choose CollX if you want a free app, a marketplace, and a big community.

Choose Cards AI if you want to see the real eBay sold comps behind every price and verify the number yourself.

Most serious collectors I know run more than one. There is nothing wrong with scanning in Ludex for the ID and checking the comps in Cards AI for the pricing. They are cheap enough that you do not have to pick just one.

Frequently asked questions

Is Ludex or CollX more accurate?

Ludex is more accurate, especially on parallels, refractors, and numbered variations. CollX is faster to get started with and has a better marketplace, but it misses specific parallels more often and its prices tend to run high because it mixes in asking prices.

What is the best free card scanner app?

CollX has the most generous free tier of the three. Ludex offers a limited free trial before pushing you to its ~$19.99 a month Premium plan. Cards AI does not have a permanent free tier but offers a 7-day free trial.

Why do these apps show different prices for the same card?

Because they use different data and different math. CollX blends in marketplace asking prices, Ludex weights completed sales, and Cards AI pulls live eBay sold listings and shows you the actual comps. I wrote a full explanation of why scanner prices disagree on the blog.

Is AI card grading accurate?

Not as a final grade. AI grading is a reasonable pre-screen for whether a card might be worth submitting to PSA or BGS, but no app can guarantee a grade from a phone photo. Treat it as a gut check, not gospel. See my best card grading apps breakdown.

Can I use more than one of these apps?

Yes, and a lot of collectors do. A common setup is using Ludex or CollX for scanning and organizing, and Cards AI to verify pricing against real sold comps before buying or selling.

The bottom line

Ludex is the accuracy pick, CollX is the free-and-social pick, and Cards AI is the pick if you want to see the real sold data instead of trusting an algorithm. I am biased toward the last one because I built it, but the honest truth is all three are solid and the right answer depends on whether you care most about scan accuracy, a free marketplace, or verifiable pricing.

If verifiable eBay sold pricing is the thing you care about, Cards AI is $59.99 a year with a 7-day free trial on iOS. Otherwise, Ludex and CollX are both worth your time.