Comparison

Sigalert.com vs Caltrans QuickMap

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sigalert.com

Get real-time traffic updates and detailed road speed information to avoid congestion. Access a vast network of traffic cameras and personalized route conditions to plan your commute efficiently.

Highlights
  • Real-time traffic map
  • 24/7 speed/accident/construction coverage
  • Extensive traffic camera network
  • Personalized routes
  • GPS integration
  • Shake to refresh data
Features
Read full description

Save time, save money, and save yourself from the hassles of traffic jams with Sigalert.com. Sigalert features constantly updated, real-time road speeds, round-the-clock traffic reports from the country's top traffic company, and the largest network of roadside traffic cameras in the U.S. Avoid traffic with Sigalert.com. For more than a decade, California drivers have had a secret weapon in their daily commute--Sigalert.com. In 2010, Sigalert expanded to offer its uniquely simple and powerful service in more than 75 metropolitan areas across the U.S. Now Sigalert has more users than any other online traffic service (comScore/MediaMetrix data from January 2011). The Sigalert iPhone app is simple to use, but packed with information: *** MORE THAN JUST RED/YELLOW/GREEN - Sigalert offers incredibly detailed speed information. Sigalert's users know when traffic is moving 25 miles per hour and when it's moving 40 miles per hour. Shouldn't you? *** CONSTANTLY UPDATED REPORTS ON ACCIDENTS, CONSTRUCTION AND TRAFFIC JAMS - Sigalert features Total Traffic data. Our 24/7 coverage of road conditions comes from hundreds of professional traffic reporters stationed in state-of-the art data centers across the U.S. *** THE BEST TRAFFIC CAMERAS IN THE BUSINESS - Sigalert uses a custom built and curated camera network -- the most extensive real-time camera coverage. You can see actual traffic conditions along your route right now. App Features: - Real-time traffic map - 24/7 speed/accident/construction coverage - Extensive traffic camera network - Personalized routes showing ONLY the conditions on your drive - Unmatched traffic detail with just a tap of the map - GPS integration to automatically track you while you drive - Shake to refresh data Cities Covered: New York | Los Angeles | Chicago | Atlanta | Dallas | Houston | Miami | Washington | Boston | Philadelphia | Detroit | Columbus | Orlando | Charlotte | Minneapolis | Denver | Cleveland | Memphis | Hartford | Toledo | Dayton | Harrisburg | Birmingham | Seattle | Tampa | Pittsburgh | Indianapolis | Portland | Cincinnati || Las Vegas | St. Louis | Jacksonville | Baltimore | West Palm Beach | Salt Lake City | Austin | Kansas City | San Antonio | Louisville | Providence | Raleigh | Nashville | Milwaukee | Norfolk | Greensboro | Oklahoma City | Richmond | Buffalo | Rochester | Ft. Myers | Albany | Fresno | Grand Rapids | Albuquerque | New Orleans | Allentown | Worcester | Flint | Wichita | Greenville | Little Rock | Knoxville | Mobile | Tulsa | Lexington | Charleston | Wilkes-Barre | Omaha | Springfield | Syracuse | Lancaster | Spokane | Colorado Springs | Sacramento | San Diego | San Francisco | San Jose... More on the way!

About

Caltrans QuickMap

Access real-time California traffic conditions, including speeds, camera snapshots, and lane closures. Receive alerts for road closures near your location. Customize your map view to display various highway information and points of interest.

Highlights
  • Real-time freeway speeds
  • Traffic camera snapshots
  • Lane closure alerts
  • CHP incident reports
  • Highway information display
  • Geotargeted notifications
  • Customizable map preferences
Features
Currently charting
Read full description

Know Before You Go: QuickMap puts real-time California traffic data straight from Caltrans in the palm of your hand — so you can plan smarter, avoid delays, and drive with confidence. What's on the map: - Freeway speeds and congestion - Live traffic cameras and snapshots - Lane closures and CHP incidents - Chain controls and snow plows - Changeable message signs - Border wait times - Safety roadside rest areas, Park & Ride lots - Commercial vehicle information including: -- Weigh stations and Escape Ramps -- Terminal/Service Access Ramps -- Overweight Corridors and California Truck Networks Auto-refresh will refresh data every 3 minutes unless a different refresh interval is selected in the settings screen. Manual refresh is also available via the refresh button at the bottom right of the map. Enable Geotargeted Notifications to receive alerts about road closures near you — even when the app is closed. Note: If you choose to enable Geotargeted Notifications, this app will monitor your location in the background and alert you (via a Push Notification) to State Highway System road closures occurring near you. Continued use of background location may decrease battery life. Questions or something not looking right on the map? We want to hear from you — reach us at quickmap@dot.ca.gov.

Screenshots

Sigalert.com4 screens
Caltrans QuickMap4 screens

Verdict

The call

The clearest difference is chart position: Caltrans QuickMap at #160 against Sigalert.com's unranked. Sigalert.com's advantage is iOS requirement (8.0 vs 18.6). On price, rating, review sentiment and ratings volume there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.0 for Sigalert.com against 3.0 for Caltrans QuickMap. Both are backed by a comparable volume of ratings — 185 and 253 respectively. Written reviews are what separate them: 30% of Sigalert.com's written reviews are positive against 29% of Caltrans QuickMap's.

UpkeepUpdate frequency

Sigalert.com ships an update every 4 months, Caltrans QuickMap every 3 months. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 9 level
Sigalert.com versus Caltrans QuickMap: the parameters behind the verdict, then further details
ParameterSigalert.comCaltrans QuickMap
PriceFreeFree
Rating3.0 (185 ratings)3.0 (253 ratings)
Positive reviews30.1% of reviews — better28.9% of reviews
Number of ratings185253 — better
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank—#160 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better18.6
Further details — not scored
Size16 MB28 MB
Age rating4+4+
DeveloperSigalert.comCalifornia Department of Transportation

Customer experience

Sigalert.com

All ratings185 ratings
Positive46.5%
Neutral9.2%
Negative44.3%
Written reviews73 reviews
Positive30.1%
Neutral8.2%
Negative61.6%

Caltrans QuickMap

All ratings253 ratings
Positive42.3%
Neutral12.6%
Negative45.1%
Written reviews128 reviews
Positive28.9%
Neutral17.2%
Negative53.9%

Bugs and requests

Sigalert.com

Not enough reviews yet to summarise bugs or requests.

Caltrans QuickMap

Reported bugs

11 issues
  • App crashes immediately upon opening
  • App closes itself even when not driving
  • Camera feeds display error (play button with slash)
  • Search feature completely non-functional
  • Location and refresh buttons stack on iPhone XR
Show 6 more
  • App redirects to FAQ page during navigation
  • Inconsistent camera functionality (works sometimes, not others)
  • Tap on road closure symbols returns incorrect nearby locations
  • Chain control symbols not displaying on iPhone app
  • App crashes during major storms when most needed
  • Codec incompatibility prevents video playback on iPhone

Requested features

15 requests
  • CarPlay compatibility
  • Live video streaming for cameras instead of still images
  • Terrain and satellite map view options
  • Ability to zoom and pinch camera images
  • Larger, more visible map icons
Show 10 more
  • Customizable saved map regions with memory
  • Weather radar layer integration
  • Customer service request submission within app
  • Hazard reporting interface in-app
  • Direction indicators for road signs before opening
  • Freeway speed data display instead of color bands
  • Extended coverage to other US states
  • Last update timestamp visibility
  • Clickable explanations for all map symbols
  • Fire perimeter information on fire layer

In-app purchases

None

Sigalert.com

No in-app purchases

None

Caltrans QuickMap

No in-app purchases

Questions

Is Sigalert.com free?
Sigalert.com is free to download, with no in-app purchases.
Is Caltrans QuickMap free?
Caltrans QuickMap is free to download, with no in-app purchases.
Which has better reviews, Sigalert.com or Caltrans QuickMap?
Sigalert.com and Caltrans QuickMap are both rated 3.0 out of 5 on the App Store, from 185 and 253 ratings respectively.
Do Sigalert.com or Caltrans QuickMap have ads?
Neither Sigalert.com nor Caltrans QuickMap shows ads.
Which is updated more often, Sigalert.com or Caltrans QuickMap?
Sigalert.com ships an update every 4 months, and Caltrans QuickMap every 3 months. Most recently, Sigalert.com was updated on October 15, 2026 and Caltrans QuickMap on October 16, 2026.

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