TripointOS's collectible skill badges. Every deck is a subject you can
actually master — a book to read, entries to learn, and questions to drill. Read the whole
library on the web with an OS membership or the web Ledge plan, carry it on your phone with
the Ledge Cards iOS app, and put the decks you love in your wallet as printed cards
whose QR opens the deck wherever you scan it.
Plans
WebWith an OS membership
$29.99/mo covers every app on the OS, the whole Ledge library on the web included. iOS apps are separate App Store purchases.
WebLedge Cards on the web
$19.99/mo for the study library on its own, read in the browser. Already an OS member? It is already yours.
iOSLedge Cards app
The app is free. The library on the phone is an App Store purchase: $19.99/mo, $39.99 for 3 months, $129.99/year or $399 once for good.
PrintedPhysical Ledge Cards
3 cards $27.99 · 5 cards $39.99 · 10 cards $69.99. Any decks, repeats allowed. Each card's QR opens its deck; a claimed card unlocks that deck for good.
Web + phone sync: sync between the web OS and the phone comes with
an OS membership plus every TriPoint iOS app. Progress, bookmarks and notes then follow you
between the desktop and the phone.
PE Power practice drills: three-phase power, machines, protection, code-style questions. Exam-prep style content.
K-12Physics K-12
Motion, energy, and waves — question banks tied to live simulations on the TripointOS sim kernel.
12+Physics 12+
Calculus-based mechanics, E&M, thermo, and intro quantum, backed by NP Engine's validated simulations.
K-12General History
Timeline drills and primary-source reading cards across world and US history.
All agesCooking + Baking
Technique cards, baker's ratios, food-safety temps, and conversions you'll actually use at the counter.
K-12Astronomy K-12
Star charts and solar-system flights on the NP Engine's solar and Milky Way simulations.
K-12Philosophy K-12
Age-appropriate logic puzzles and ethics discussion cards that teach how to argue, not what to think.
K-12Math K-12
Grade-banded drill decks and mental-math trainers, from counting to calculus-readiness.
All agesPlant/Flower Classifier
Point the TripointOS camera at a plant — the deck teaches the taxonomy the classifier sees.
Casino World wing (18+)
TrainerBasic Strategy
Blackjack's mathematically-solved playbook — the coach explains the optimal move at every decision, and why.
TrainerTrue Count
Unlocks the count trainer: track it live and see how the edge actually shifts.
OverlayEV Vision
Expected-value overlays on every table — see the math on the felt while you play.
ARTable Skins
Cosmetic AR table themes for the sit-down experience, rendered on the TripointOS 3D engine.
The hard rules, encoded and tested: the Casino World wing is 18+,
age-verified, and invisible under parental controls. Play chips are never redeemable for
anything of real value — the maximum reward for perfect play is feature access, not cash.
That separation is the line between a trainer and gambling, and it's enforced in code.
The education decks live outside that gate and are for everyone.
How TriBucks work
Closed loop: TriBucks are TripointOS marketplace credit — they buy in-world items like Ledge Cards, and they never convert to money.
Catalog rate: $20 buys 100 TriBucks; marketplace prices convert at 5 TriBucks per $1 of listed value.
They decay: full value for 30 days after the last grant, then linear to zero over the next 30 — spend them on your collection, don't hoard them.
Yours on your device: like everything in TripointOS, your collection lives locally. A printed card is claimed by scanning its QR: the deck is then yours for good, and the card can be passed on with a fresh code.