Interactive math you can play with

Drag the geometry. Zoom into fractals. Step through animated proofs — the math reacts in real time.

New app — Packing Puzzles, now in closed testing

Packing Puzzles (app name Iotic Packing) — a collection of packing and puzzle games, from Huarong Dao and the 15 Puzzle to Tetris, 2048, and Block Clear, all on one exact geometry engine — is now on Google Play as a closed-testing preview. To install:

  1. Visit our announcement-only Google Group driota and click Join the group. If you don't see that option, sign in first with the same Google account you use on Google Play.
  2. Opt in to become a tester, and then install Packing Puzzles (free) from Google Play.

Prefer no store hoops? The same app runs in your browser — start from its app page. The driota group carries announcements of major app releases only — very low volume, no spam. Already in the broader testers-community Google Group? That works as well.

Trikona free July 1–14

Triangular Geometry (app name Iotic Trikona) is free on Google Play from July 1 to July 14, 2026 — normally $3.14. Grab it while the window is open:

Open testing on Android

Iotic Fractal and Iotic Trikona have moved from closed to open testing on Google Play. No group membership or tester opt-in needed anymore — install directly from the store:

Want a heads-up on new releases? Our Google Group driota carries announcements of major app releases only — very low volume, no spam.