A backgammon clock for two players sharing one phone between them. Reserve time
plus a fixed number of free seconds each turn that never carry over — the
Backgammon Galaxy control. Defaults to 3:00 with a 12 second delay.

It asks for no permissions at all. There is no network access, no analytics, no
accounts, no ads, and nothing to configure before you can play. The whole clock
is a single HTML file inside the app.

<b>The delay is the point.</b> Most clocks give you the free seconds silently.
Here a bar drains under the big number while they run, and a quiet tick tells you
the moment your reserve starts moving. That is the moment worth hearing across a
board.

<b>How it works</b>

* Tap your own half to end your turn and start your opponent's clock.
* The waiting player's taps are ignored, so a stray hand can't stop the clock.
* A tap registers when you lift your finger, and only if it didn't move — so
  swiping up to leave the app never costs anyone their turn.
* Your clock runs until you lift, and holding past zero flags you.

<b>Matches</b>

Set the match length to any odd number of points up to 29. The time you set is
per point, so a 5-point match at 2:00 a point puts 10:00 on each clock. Each half
of the screen reads the score from that player's own side of the board, so both
players see their own score on the top line.

At one point there is no match to keep score of, and the score lines disappear
entirely — you get a plain single-game clock with a move count.

<b>It survives being closed</b>

Settings and the match in progress are kept on the device: the score, both
clocks, the move counts, whose turn it is and how much delay was left. Force-quit
it mid-match and it all comes back. The one thing it can't restore is time that
passed while the app was closed, so it returns paused rather than charging anyone
for the gap — a crash shouldn't decide a game.

Pause freezes mid-turn and resumes exactly where it stopped, delay included.
Reset takes two taps, so one stray thumb can't wipe a live match.

Five colour schemes, three sounds generated on the fly, and the screen stays
awake while you play.