The mountain
belongs to
whoever
climbs it last.
FlagOn turns every peak into contested territory. Hike to the summit, hold your GPS position for 10 minutes, plant your crew's flag. Hold it until a rival crew shows up.
Live map
2,847 peaks.
Real mountains.
Real competition.
Flags get planted and stolen in real time.
AR Camera
Stand on the summit.
See who owns everything around you.
Open the AR camera at any peak and see which crews own the mountains around you — their flags, their names, in real time.
2,847
summits mapped
3
launch markets
10 min
GPS hold time
How it works
Three steps
to own a peak.
One rule: you have to actually be there. GPS-verified presence — not followers, not fitness trackers.
01
Hike to the summit
Head up any of 2,847 mapped peaks. FlagOn tracks your elevation and proximity in real time.
02
Hold for 10 minutes
Stay within 150 meters of the summit for the full 10 minutes. The timer pauses if you drift — you have to actually be there.
03
Plant your flag
Claim the peak for your crew. Your flag holds for 7 days — then rival crews can challenge and take it from you.
Features
Designed for crews who actually hike.
Crew territory wars
Form a crew of up to 8 hikers. Every peak you claim counts toward your crew's leaderboard rank. Compete across mountain ranges or entire regions.
GPS Verified
150m proximity radius. 10-minute hold. Verified by hardware GPS — you have to actually climb the mountain.
37.6584° N, 126.9998° E
Bukhansan · Verified
7-day flag life
After 7 days, rival crews can challenge and take your flag. Hike back to defend, or lose the peak.
Live leaderboard
Crews
Compete
as a crew.
Form a crew, share a 6-character invite code, and dominate the leaderboard together. Every flag your crew holds counts.
Form a crew
Name it, pick a color, and set your territory.
Invite with a code
Share a short code — friends join in seconds.
Climb the leaderboard
Ranked by active flags. Steal peaks, stay on top.
Seoul Alpine
서울 알파인
14
peaks
NK Ridge
북한산 릿지
11
peaks
Jiri Pack
지리산 팩
9
peaks
Join with a 6-character code. No search needed.
Early access
Be first to claim your mountain.
Launching in Korea first. Founding crews get a permanent badge and first pick of peaks before launch.