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Product artwork; the prepared Si Stebbins stack is required. Identifiers are redacted.

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Deck Calculator (Card Stack Mentalism App) · 1 / 5

Product artwork; the prepared Si Stebbins stack is required. Identifiers are redacted.

Deck Calculator (Card Stack Mentalism App)

Enter two cards from a prepared Si Stebbins deck to calculate the cut pile's count, red/black totals, suit breakdown and full card order. Calculations work offline after activation.

What you can do

Deck Calculator is an Android performance companion for card magicians and mentalists, developed by rajeshbiswas.me for TrickApps. It turns two glimpsed cards from a prepared physical deck into a clear analysis of the spectator's cut packet, so you can focus on presentation instead of mental arithmetic. The app calculates the number of cards in the cut pile, red and black totals, counts for each suit, and the ordered cards in both the pile and the remaining deck. Choose dropdown selectors, a visual card grid or shorthand input such as 4H, KS and 10D. It is built for a complete 52-card deck in the standard Si Stebbins cyclic order. Stack preparation and the ability to preserve that order during a routine are required. It does not identify an arbitrarily shuffled deck or detect cards automatically. The dark interface is designed for performance use, with contrasting card previews and visible count readouts. Calculations run locally without internet, Wi-Fi or Bluetooth during a performance. First activation requires an internet connection, your purchase email, the app's Device ID and a valid activation key. Once activated, the app validates the saved key locally when offline; cloud license checks are performed when online. The purchase is digital software. A phone and physical cards are not included, and rehearsing the stack, inputs and presentation remains part of preparing the effect.

  • Exact cut-pile count from two cards in a prepared Si Stebbins stack
  • Red and black totals plus a breakdown of all four suits
  • Numbered card order for the cut pile and remaining deck
  • Three input modes: dropdown, visual card grid and text shorthand
  • Dark performance interface with clear card previews and count readouts
  • Offline calculations after online first activation
  • Activation tied to the licensed email and Android Device ID

What’s included

  • Deck Calculator 1.0.1 Android app in ABI-specific APK versions
  • Lifetime one-time license for one Android device
  • Activation key linked to your purchase email and Device ID
  • Performance and stack setup guide

Not included

  • Android phone or physical playing cards
  • Automatic card detection or support for arbitrarily shuffled decks
  • Source code, redistribution rights or resale rights
  • Guaranteed future major upgrades or new stack systems

Important limitations

  • Requires the standard 52-card Si Stebbins cyclic stack and correct card input. Arbitrary shuffles, missing cards or a broken stack invalidate the analysis.
  • The performer must glimpse and enter the required cards; the app does not recognize a deck automatically.
  • First activation requires internet and successful license verification. Offline use applies after activation while the saved key remains valid.
  • One device per license; device changes require support review. A locally saved offline key cannot be revoked instantly while the former device is unreachable.
  • Release artifacts are verified; performance across every physical Android model has not been tested.