The short version
- The only permission 4sum asks for is location while you are using it — to measure a drive and to show how far you have to the green. Those coordinates stay on your phone.
- There is no sign-up and no account.
- Your players, courses, rounds and scores are stored on your device.
- 4sum carries no analytics, advertising, or tracking code.
- 4sum does not move money.
What 4sum stores, and where
4sum keeps everything you enter in your iPhone’s local app storage: the players in your group, the courses and tees you’ve saved, your rounds and hole-by-hole scores, the games you have running, handicaps you type in, and any Venmo username you choose to save against a player.
Using the location features saves two kinds of coordinates, both locally. Marking a tee or a green saves that point against the course, so the next round you play there starts with it already known. Marking a drive saves the two points it was measured between, in that round, next to the yardage. The live distance-to-green readout uses your position while the hole is on screen but records none of it.
In this version that data stays on the device: 4sum does not sync it, back it up, or send it to us. If you delete the app, it goes with it.
Permissions
Location, and only while you are using the app. 4sum asks for it the first time you use one of the two features that need it — not on launch, and never in the background.
- Marking a drive. Longest Drive measures a tee shot by taking a position at the tee and another where the ball finished, and reporting the yards between them.
- Distance to the green. On a hole whose green has been marked, the hole screen shows how far you have left as you walk up it.
Both are optional, and you can score a whole round without either. A drive can always be typed in instead — if there is no permission, no usable fix, or nobody has marked that hole, 4sum asks you for a number rather than refusing to play the game. The distance readout does not appear at all on a hole with no marked green, which is every hole on the courses 4sum ships with until somebody marks one.
4sum does not ask for “always” or background location, and it does not ask for your camera, microphone, photo library, contacts, or notifications.
Money
4sum does not move money. It works out who owes whom and can hand that amount off to the Venmo app, where you complete the payment yourself. 4sum processes no payments, holds no funds, takes no cut, and is not a financial service of any kind.
A Venmo username you save is stored on your device and is only used to open that person’s Venmo profile when you tap to settle up.
Network use
You can score an entire round with no signal. One thing does reach the network: like most apps built with Expo, 4sum checks for over-the-air app updates on launch. That request goes to Expo’s update service and necessarily reveals your IP address and which version of the app and OS you are running. It does not include your rounds, scores, players or courses.
Analytics and advertising
This version contains no analytics SDK, no crash reporter, no advertising library, and no third-party tracking code. It does not track you across apps or websites, so it does not present an app-tracking permission prompt.
Deleting your data
Delete individual rounds, players or courses inside the app, or delete the app from your iPhone to remove everything at once. Since this version keeps your data on the device, that is all it takes — there is no request to send us. If that ever changes, this page will explain how to ask.
Children
4sum is not directed at children under 13, and it collects no personal information from anyone regardless of age.
Changes to this policy
This page describes 4sum v1.1.0. Online features are planned — shared rounds and syncing between the group are the obvious ones — and those will involve sending some of your data to a server. When that happens, this page will be updated to describe exactly what is sent and why before the version that does it ships, and the effective date above will change.
Contact
Two Beers Studios — support@twobeersstudios.com