Set up your device
Charge it up
Plug the included cable into the port on the side of the gate. A full charge runs about six hours of play.
Get the app
The LagKing app is included with your gate. No subscription fee.
Create your account with Apple or Google sign‑in. Your putts save to your phone; an account adds friends, challenges, and leaderboards.
Power on and pair
Press the power button on the gate. The light glows red while it waits for your phone. Open the app, tap Scan, and choose your gate. With the current app and gate firmware, the light turns green when a game is accepting putts and the gate is ready, not just when it connects.
After the first time, the app reconnects to your gate automatically whenever you open it.
Pick your surface and green speed
In Settings, open Putting Surface and tell the app two things. First, what you putt on: a putting mat, a hitting mat, carpet, or a real putting green. Just pick it by name.
Second, your Green speed. This is the one number that matters: every distance LagKing shows is how far that putt would roll on a green this fast. Set it to the greens you actually play.
Line it up
The gate measures your start line relative to itself, so square the gate to your intended line. On a mat with a line, set your ball on the line and use the included alignment jig: seat the gate against the jig and it is lined up in one motion.
No line on your surface? Snap a chalk line from your ball position through the middle of the gate, or lay painter's tape where your ball starts and along the front of the gate. Ball, line, and gate all pointing at the same target.
If you ordered the Alignment Dock, it takes the place of the jig: line the dock up once, pin it down, and from then on the gate drops in already squared. See how to set it up.
Putt
Place your ball 2 feet from the middle of the gate and putt straight through it. The app shows speed, start line, and how far the putt would have rolled. If 2 feet feels too close, you can change the setup distance to 2.5 or 3 feet in the app's Settings.
What the light means
No screen, no menus. The color is the indicator.
Red
Powered on, not paired. Open the app to connect.
Green
Paired and ready to putt.
Solid blue
Not ready for the next putt: the gate may be recovering, cooling down, or waiting for your turn. Wait for green before putting.
Blue flash every few seconds
The gate is sleeping. Starting a game wakes it automatically with the current app and gate firmware. Wait for green before putting.
Pulsing
Low battery, layered on top of any color. A rapid pulse means charge now.
Red flashes
Error code. Count the blinks, then check Device Errors in the app's Settings.
Game modes
Two tabs cover it: Target for focused practice, Challenge for games, friends, and leaderboards.
Target
Pick a distance, or let the app pick, and see exactly how close every putt landed. The fastest way to sharpen your lag.
Daily ChallengeLEADERBOARD
One shared challenge a day. Post your score and see where you rank.
Sim 9
Nine holes rendered in 3D. Play solo, pass the phone, or match up with a friend.
Party games
Poker, Turf War, Line Four, and the Ladder. Turn practice into a game night on one mat.
Friend challengesHEAD TO HEAD
Send a challenge to a friend and settle it putt for putt, even from different living rooms.
King of the HillMONTHLY
A five‑hole course that stays all month, one putt per hole, and one attempt a day. Learn the holes, then spend your attempt. Lowest total distance of the month holds the crown.
A practice routine
Not required, and there is no wrong way to use the gate. If you want somewhere to start, this takes about fifteen minutes.
- Warm up. Five putts in Target at 15 feet. No score, no pressure. Let your stroke wake up.
- Distance ladder. Target at 20, 30 and 40 feet, five putts each. Watch the projected roll out, not where the ball stopped on your mat. This is the part a mat on its own cannot teach you.
- Start line. Ten putts from one distance. Forget the roll out and chase PURE. A repeatable start line is the part of your stroke you can genuinely groove, and the gate is the only thing in the room that can see it.
- Finish under pressure. One Daily Challenge, or a round of Sim 9. Putt while you are a little tired and a little invested. That is when your stroke tells you the truth.
Put it on the big screen
LagKing TV puts the 3D green on your TV while your phone becomes the controller. The green fills the room, and everyone can sweat the putt with you.
- Open LagKing TV: on a laptop or a computer connected to your TV, go to tv.lagking.com. It shows a six-digit code. An Apple TV app is coming to the App Store.
- Pair it once: in the LagKing app, go to Settings, TV, Add a TV and enter the code. On iPhone you can scan it instead.
- Play: open any mode on your phone. The green, the scores, and every putt show on the TV, and your phone keeps the buttons. Next time, the TV reconnects on its own.
- Or cast your screen: on iPhone or iPad, open Control Center and tap Screen Mirroring. On Android, open Quick Settings and tap Cast (some phones call it Smart View). Turn your device sideways so the picture fills the TV. Your device draws the green and stays on, so it uses more battery than LagKing TV.
- More about LagKing TV: the Apple TV app, why there's no Roku or smart TV app, and the best ways to connect a computer are on the LagKing TV page.
Add friends
Friend codes
- Open the Profile tab and tap Friend Code in the Friends section.
- Tap Generate code to get a 6‑character code, then hit Share to send it any way you like.
- Got a code from a friend? Enter it on the same screen.
- Codes are single use and expire after 24 hours. Generate a fresh one any time.
- Once you are friends you can send head‑to‑head challenges, compare stats, and meet on the leaderboards.
Care and charging
- Recharge with the included cable from any USB‑A charger. About six hours of play per charge.
- Keep it dry. The gate is not waterproof: no putting in the rain, and bring it in off wet grass.
- Do not leave it in a hot car. Heat is harder on it than putts are.
- Wipe clean with a dry cloth. Nothing wet, nothing abrasive.
- Updates come through the app. When a gate update is available the app offers it. Keep the gate charged and your phone nearby while it installs.
- Battery, disposal and regulatory information is in Safety and compliance at the bottom of this page.
Troubleshooting
- A putt did not register. Check the light is green, the ball entered from the front, and it rolled clean through the middle of the gate.
- Ball clipped the gate? It comes back on its own. The light turns green again once it is ready.
- Light stuck red. Open the app and tap Scan. Still stuck? Power the gate off and on.
- Seems dead. Charge it with the included cable and a USB‑A charger, then press the power button off and on again.
Found a bug?
- LagKing is a brand new product and we appreciate any and all bug reports.
- Take a screenshot, jot down what you were doing, and email it to support@lagking.com. Every report makes the next update better.
Still stuck?
- Run a health check at lagking.com/debug. It reads your gate right from the browser and gives us what we need to help.
- Email support@lagking.com. A real person answers.
Safety and compliance
Product and responsible party
LagKing Putting Gate, Model LK-G1. Responsible party: LagKing LLC, 145 University Dr #2111, Amherst, MA 01004, United States. Email: support@lagking.com. Website: https://lagking.com.
FCC compliance
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Contains FCC ID: Z4T-XIAOESP32S3.
Caution: Changes or modifications not expressly approved by LagKing LLC could void the user's authority to operate the equipment.
RF exposure
To maintain compliance with FCC RF-exposure requirements, install and operate this product so there is at least 20 cm (8 inches) between the product's radio antenna and any person. Do not operate the product closer than 20 cm unless LagKing has obtained and documented the additional FCC evaluation or authorization required for portable operation. The internal radio module and antenna are not user-serviceable; do not remove, replace, modify, or substitute them.
Battery and charging safety
This product contains a DNK‑114960 rechargeable lithium‑ion polymer battery rated 3.7 V, 4000 mAh, 14.8 Wh. Charge only from an appropriate 5 V source using the included USB-A-to-USB-C cable. A USB-C-to-USB-C cable will not charge this product.
Do not puncture, crush, open, or burn the battery, and keep the device away from excessive heat and water. Stop using and charging it if it is damaged, unusually hot, leaking, or swollen.
At end of life, do not put the device or its battery in household trash or curbside recycling, and do not burn it. The battery comes out for recycling: with the device switched off and unplugged, open the case with a T8 Torx screwdriver, unplug the battery at its connector, and lift it out. Take the battery to a battery drop‑off point (find one at batterynetwork.org/locator) and the rest of the device to an electronics recycler. If the battery is damaged, swollen, or leaking, do not remove it; email support@lagking.com instead.