Evidence over instinct.
Real market pricing is the foundation. Useful answers need more than confidence; they need something to stand on.
Independent studio. Useful software.
Small studio.
Sharp, honest
tools.
Precise, data-backed software for people who want a straight answer. Built with focus. Grounded in the real world.
Built by Epsilon Labs
Indiana, USA · Est. 2026
One founder. A clear focus.
01 / The studio
Small by choice.
Precise by design.
Epsilon Labs is a one-person software studio building things worth trusting. No bloated feature lists. No vague AI promises. Just tools that do one job well, backed by real data.
Less noise. More substance.
02 / Flagship product · CardVerdict
Know the card.
Question the price.
In development for iOS
Scan a trading card or paste an eBay listing. CardVerdict brings pricing and condition into focus, with a clear Buy, Fair, or Pass verdict to help collectors make a more informed call.
- Trading card scanning & listing analysis
- TCGplayer pricing & eBay listing data
- A “Verify First” flag when caution matters
Currently in development. Follow the workbench below for testing and release-readiness updates.
From signals to a verdictIllustrative
Market context
TCGplayer pricing
eBay listing data
Card condition
Condition analysis
Counterfeit indicators
A clearer call before you buy.
Buy
Fair
Pass
Verify FirstWhen a closer look comes first.
03 / How we build
The bar stays high.
A few principles that shape every product decision.
Focus is a feature.
One founder, one focus. Build the useful thing, refine the details, and leave the feature bloat behind.
Privacy deserves care.
Respect for your data is a design commitment. We aim to collect only what serves the product, not build profiles on you.
04 / Projects
On the workbench.
CardVerdict is our sole focus right now. Here is where the work stands.
Physical iPhone testing
The Capacitor-based native build is being prepared for device testing. Reliable Xcode device detection remains the current blocker.
eBay pricing integration
Developer API access is approved under Epsilon Labs. Integrating listing data into verdicts is underway.
App Store submission
The first TestFlight build is awaiting full App Store Connect activation.
Counterfeit detection accuracy
Real edge cases, including a confirmed counterfeit Mew ex, continue to inform the verdict logic.
05 / Developer updates
Built in the details.
A look at the fixes and features shaping CardVerdict.
Scan history now persists
Replaced a sandbox-only storage call that failed silently in the browser with real local storage.
A more compact app header
More room for scanning at the card table. Less space spent on the app's hero header.
The “Verify First” verdict
Tuned against a real counterfeit: a fake Mew ex from Paldean Fates.
Billing, native build & telemetry
Added RevenueCat billing, a Capacitor-wrapped iOS build, and a Google Sheets dashboard for feedback.
06 / Get in touch
Good tools start with
good questions.
Feedback, a question, or just a hello. We're listening.