RivalPip Cycle app icon
iPhone & iPad

RivalPip Cycle

Build nontransitive dice, prove the cycles with exact win-rate engines, and hand students printable nets—so A beats B, B beats C, and C beats A is a studio, not a scavenger hunt through PDFs.

9+
Seeded classic sets offline
Exact
Pairwise sample-space engine
PDF
Print-ready nets & tables
On-device
SwiftData remixes, no cloud

Illustrative marketing figures; not App Store metrics.

Pieces that matter

Seeded classic gallery

One-tap open for Efron’s four-die set, Miwin, Grime, Oskar, and starter pairs—each with cycle previews and teaching blurbs, never an empty state.

Dominance-cycle canvas

Directed brass arrows show who beats whom, with exact win/tie/loss percentages on every edge and tappable dice to inspect faces.

Interactive nets & live recompute

Assign pips 0–9 on unfolded nets (optional 3D tilt), lock faces, and watch cycle strength update the moment a number changes.

Exact pairwise matrices

Full face×face sample space with Swift Charts win/tie/loss bars plus an optional Monte Carlo strip for live classroom demos.

Challenge drills & PDF worksheets

Solve “beat A, lose to B” and broken-Efron restores with hints and validation, then print labeled nets, blank student dice, and a one-page primer.

Offline primer & pair-of-the-day widget

Illustrated nontransitivity guide, facilitation tips, and misconception notes—plus a WidgetKit teaser drawn only from local seeds.

In brief

RivalPip Cycle is the hands-on construction bench for math-club coaches, probability teachers, and puzzle designers who need locked face maps and classroom-ready proof. Open a seeded classic—Efron, Miwin, Grime, Oskar, or starter pairs—or a blank cube pack. Edit pips on interactive nets, watch directed dominance arrows and pairwise matrices recompute instantly, then drill beat-this-die challenges and export worksheet PDFs. Full offline seed libraries, exact sample-space engines, and local SwiftData remixes keep originals intact while you teach the paradox that rock-paper-scissors belongs on cubes.

No cloud dossier

RivalPip Cycle does not collect personal data — everything stays on your device, with no third-party tracking or advertising SDKs. Read the full Privacy Policy.

Reach out

Questions or feedback? Visit Support or email anna987099@gmail.com.