ChaseScanner

the stations do the flying. we do the watching.

Los Angeles TV covers pursuits like nowhere else, and each station starts a dedicated live stream when one is on. ChaseScanner notices, and tells you.

FOX 11ABC7KTLA 5NBC4CBS2 / KCAL9

01 / DETECT

every two minutes, every station

A detector checks each station's channel for a live stream titled as a pursuit. Recaps and newscasts don't count. Most of the time it finds nothing, and the app reads NO CHASE.

SCAN in its quiet state: CHASE STATUS NO CHASE, the player reading NO SIGNAL, and the helicopter map with a free preview countdown

02 / ALERT

one ping, then the stream

When a stream goes live, you get a notification, usually within about two minutes of it starting. Tap it and the station's stream is already playing. One chase means one alert, even when three stations are on it.

SCAN during a chase, with the FOX 11 stream playing in the app and 1 OF 2 STREAMS under it

03 / CONFIGURE

turn alerts on once

That's the whole setup. No account, no sign-in, nothing to tune. CONFIG shows whether alerts are active and holds the Pro controls.

the CONFIG tab: the NOTIFY ON LIVE CHASE toggle with STATUS ALERTS ACTIVE, and the ChaseScanner Pro card

see the helicopters before the stream.

Police and news helicopters broadcast their positions. ChaseScanner puts the ones over the basin on a live map, names the ones it knows, and watches for them gathering on one spot.

WHO

105 aircraft by nameLAPD, LASD and CHP ships, and each station's news helicopter, colored so you can tell them apart at a glance

LINK

a convergence readoutwhen several helicopters close on one spot, the app says so, with the distance between them, often before a station goes live

DATA

open aircraft datapositions from ADSB.lol contributors under the ODbL, best-effort, and empty when nothing is up

every chase, on the record.

The log keeps each pursuit the detector caught: which stations covered it, the minute each one went live, and how long it ran. Real data from real chases, grouped so three streams of one pursuit read as one entry.

WHEN

start times per stationsee who was first on the air, and by how much

HOW

duration and titlethe station's own stream title, and how long the stream ran

FREE

the newest chase, alwaysthe full log is part of ChaseScanner Pro

for the ones who want the whole picture.

Alerts and live streams are free for everyone, and always will be. Pro is for the helicopters and the history.

Unlimited helicopter map

Free users get one minute a day. Pro leaves the map on for as long as you're watching.

The full pursuit log

Every chase the detector has caught, not just the newest one.

Convergence readout

The CONVERGENCE indicator and the lines between aircraft, live on the map.

One plan

Monthly, with a 3-day free trial. Cancel any time in your Apple subscriptions.

Billed by Apple. Restore on a new phone with RESTORE PURCHASES in CONFIG.

watch from the couch.

ChaseScanner is a news app. It's built to be light on your phone and clear about what it is.

safety

never go to the scene.

Pursuits are dangerous and unpredictable. Never drive toward one, never use the app while driving, and always follow the instructions of law enforcement.

privacy

no account, no location.

The app never asks where you are and has nothing to sign in to. The only thing stored is your notification token, and only if you turn alerts on. No ads, no analytics, no tracking.

the streams

they belong to the stations.

Streams play through YouTube's own player. ChaseScanner points you at them and never records, downloads or rebroadcasts anything.

Know when a chase is on the air.