4sum
iPhone · in betaTrack the games. Settle the bets.
Nineteen side games. One scorekeeper. Nobody arguing in the parking lot.
4sum runs every game your group has going — on the real course, with real handicaps — and tells everyone who owes what when you walk off eighteen.
Get in before the App Store
4sum is in beta on iPhone now. Leave your email and you get an invite ahead of the public launch. One email when it opens — that is the whole list.
What it is
Every game at once
Nassau, Skins, Wolf, Vegas, Banker, Snake — stack as many as the group can keep straight. 4sum scores them all off one card.
Strokes sorted on the first tee
Course strokes from your handicap and the numbers printed on the scorecard for the tees you picked, then allocated hole by hole off the stroke index.
One settle-up screen
Every game totalled, then collapsed into the fewest payments that square the group. Tap a name to hand the amount to Venmo — 4sum doesn’t touch the money itself.
The nineteen games
NassauThree bets in one: front nine, back nine, overall.
SkinsWin the hole outright to take the skin. Ties carry over.
WolfRotating Wolf picks a partner after each drive — or goes it alone.
Match PlayHead-to-head, hole by hole. Win the match, win the bet.
Stroke PlayLowest total strokes takes the pot.
StablefordPoints per hole vs par — highest total wins.
Best Ball2v2 — the better ball of each team faces off every hole.
High & Low2v2 — a point for best ball, a point for worst ball, every hole.
VegasTeam scores pair into a number — low team wins the difference.
ScotchSix points a hole: low ball, low total, proxy and a birdie.
SixesRotating partners: three 6-hole team matches in one round.
NinerThreesome game — 9 points split 5/3/1 on every hole.
BankerOne Banker per hole takes on everyone at their own wager.
Bingo Bango BongoFirst on, closest in, first down — 3 points a hole.
Dots & JunkDots for birdies and pars, plus greenies, sandies and barkies.
SnakeThree-putt and the snake is yours. Hold it at 18, you pay.
RabbitWin a hole outright to hold the rabbit — hold it at the checkpoint to cash.
Left-RightYour drive picks your side — center takes on the field.
Longest DriveMark the drives, longest one takes the hole. Add it whenever, use it wherever.
On the phone
Standings Every game you have running, live, on one screen.
Settle up The fewest payments that square the whole group.
Rules + worked example Each game carries its own rules and a hole-by-hole example.