Blue Pier Dives

A diving game about angular bookkeeping under a very short clock.

Every dive starts with a declaration. You pick from a board of real dive types — forward, back, reverse and inward, held in tuck, pike or straight, with a stated number of somersaults and half twists and a stated degree of difficulty. Harder dives are worth far more, and leave you far less room.

Then the clock starts, and it does not last long.

THREE PHASES
1. Approach. On the three metre springboard a power marker sweeps across the bar and a single tap sets how much the board gives back. A stronger take-off buys height, and height buys rotation time. On the ten metre platform there is no spring at all: press and hold to set yourself on the edge, drag sideways to hold the balance steady, and release to leave.
2. Flight. Hold anywhere on the pool to keep the position. Folded up you spin fast; opened out you spin slowly. Drag sideways while you hold to drive the twist. A rotation gauge counts your somersaults and twists against the ones you declared, and a second marker shows where the dive would finish if you opened up right now.
3. Entry. Let go. The spin slows, and whatever rotation you have when you meet the water is your entry angle. In the last moments a live indicator shows how far from vertical you are.

REAL PHYSICS, REAL SCORING
Angular momentum is set at take-off and then conserved. Changing your shape changes how fast that momentum spins you, so the total rotation is a genuine consequence of when you tuck and when you open. Nothing is faked and nothing is scripted.

Seven judges then award a mark from 0 to 10 in half points. The two highest and the two lowest are struck out, the three that remain are added together, and the sum is multiplied by the degree of difficulty. The app shows you every award, which ones counted, and the arithmetic. Judges react to rotation accuracy, to how cleanly the position was held, and to the entry angle and the size of the splash. Inside seven degrees of vertical earns a small bonus for the near-silent entry.

WHAT IS IN IT
- Twenty-two dive types across all four groups and all three positions
- Springboard three metres, platform ten metres, and a practice mode
- Practice runs slower, enlarges the gauge and marks the exact instant to open up
- Three dive lists, with a running total and a best list on record
- A statistics log: best list, best single dive, average entry accuracy, dives attempted by group, rip entries, missed dives and hardest completed difficulty
- An illustrated explainer of the four groups, the three positions and the scoring formula
- Fourteen poolside awards to work through
- Everything drawn live on the canvas: the pool, the caustics, the diver, the splash

COMPLETELY OFFLINE
No internet connection is used or needed. No ads. No analytics. No accounts. No in-app purchases. No sound at all — feedback is entirely visual, with an optional short haptic buzz on take-off and on entry that you can switch off. Your record is stored on the device and survives a restart.

Nothing here involves real money or prizes of any kind. A bad dive is a big splash and a low mark, never anything worse. Suitable for everyone.

Pick the dive. Count the rotations. Open up. Cut the water clean.