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Best Onstar Cadillac Apps

26+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated August 2026

Looking for free onstar cadillac apps? 20 of our 26+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Onstar Cadillac Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1myCadillacmyCadillacFree4.8★ (160K)YesNoAug 2026
2OnStar Guardian: Safety AppOnStar Guardian: Safety AppFree4.8★ (23K)YesNoAug 2026
3myChevroletmyChevroletFree4.8★ (956K)YesNoAug 2026
4GM FinancialGM FinancialFree4.8★ (51K)NoNoAug 2026
5Cadillac FinancialCadillac FinancialFree4.7★ (318)NoNoAug 2026
6Cadillac of NOLACadillac of NOLAFree—NoNoMay 2026
7CADILLAC MARINCADILLAC MARINFree—NoNoMay 2026
8Al Mansour CadillacAl Mansour CadillacFree—NoNoMay 2026

Top Picks for Onstar Cadillac

myCadillac#1

myCadillac by General Motors Company

Start, Lock & Schedule Service
Editor's Choice
🌟 Lifestyle
4.8😞(160K ratings)
FreeAds
myCadillac screenshot 1
myCadillac screenshot 2
myCadillac screenshot 3
myCadillac screenshot 4
myCadillac screenshot 5
myCadillac screenshot 6

Control your vehicle remotely, including starting the engine and adjusting climate. Locate your car, monitor key metrics like fuel and tire pressure, and schedule maintenance or request roadside assistance directly from your smartphone.

What We Love

  • 🚀 Remote start and unlock features
  • 💡 Useful vehicle diagnostics and maintenance tracking
  • 👍 Clean and modern app design

Room to Improve

  • 🐛 Frequent app crashes and freezes
  • ⏱️ Slow response times and delayed updates
  • 🔒 Security concerns with login issues
OnStar Guardian: Safety App#2

OnStar Guardian: Safety App by OnStar, LLC

Emergency Roadside Assistance
Strong Contender
🌟 Lifestyle
4.8😐(23K ratings)
FreeAds
OnStar Guardian: Safety App screenshot 1
OnStar Guardian: Safety App screenshot 2
OnStar Guardian: Safety App screenshot 3
OnStar Guardian: Safety App screenshot 4
OnStar Guardian: Safety App screenshot 5
OnStar Guardian: Safety App screenshot 6

This app provides roadside assistance, crash response, family location sharing, and emergency services directly from your smartphone. It offers help in any vehicle, including motorcycles, and allows sharing with up to seven family members.

What We Love

  • 🚀 Amazing tracking service
  • 👍 Highly recommended
  • 🚀 Peace of mind
  • 🚀 Great addition to new car

Room to Improve

  • 🔋 Constant drain
  • 🔋 Battery hog
  • 🐛 Unreliable, glitchy, & getting worse
myChevrolet#3

myChevrolet by General Motors

Start, Lock & Schedule Service
Worth Considering
🌟 Lifestyle
4.8😞(956K ratings)
FreeAds
#39in Lifestyle
myChevrolet screenshot 1
myChevrolet screenshot 2
myChevrolet screenshot 3
myChevrolet screenshot 4
myChevrolet screenshot 5
myChevrolet screenshot 6

Remotely control your vehicle's climate and starting functions. Track essential vehicle metrics like fuel and tire pressure. Schedule maintenance and request roadside assistance directly from your smartphone.

What We Love

  • 🚀 Remote start and unlock features
  • 👍 Convenient vehicle diagnostics
  • 🔒 Secure access to vehicle data
  • 👍 Searchable owner's manual

Room to Improve

  • 🐛 Frequent app crashes and freezes
  • 🔍 Unreliable vehicle location tracking
  • 🔋 Inconsistent battery status updates

More Onstar Cadillac apps to explore

4
GM Financial
GM Financial
GM Financial
MyAccount
Free

Manage your GMF account conveniently and securely on the go. Make payments, view your payment history, and update your information for your Chevrolet, Buick, GMC, or Cadillac vehicle. Access your account 24/7 from anywhere.

Make paymentsSet up auto payView payment history
💰 Finance
(51K)
free
5
Cadillac Financial
Cadillac Financial
Cadillac Financial
MyAccount
Free

Manage your Cadillac Financial account on the go. Make payments, view history, and update your information securely from your mobile device. Keep your account on track with convenient 24/7 access.

Make paymentsSet up auto payView payment history
💰 Finance
(318)
free
6
Cadillac of NOLA
Cadillac of NOLA
Cadillac of NOLA
by Dealer's Choice, Inc.
Free
💼 Business
(0)
7
CADILLAC MARIN
CADILLAC MARIN
CADILLAC MARIN
by Dealer's Choice, Inc.
Free
💼 Business
(0)
8
Al Mansour Cadillac
Al Mansour Cadillac
Al Mansour Cadillac
Cadillac
Free
💼 Business
(0)
9
myGMC
myGMC
myGMC
Start, Lock & Schedule Service
Free

Remotely control your vehicle's climate, start the engine, and locate it. Monitor vital vehicle information like fuel, tire pressure, and oil life. Schedule service appointments and request roadside assistance directly from your smartphone.

Remote start and climate controlVehicle location and walking directionsFuel level, tire pressure, oil life monitoring
🌟 Lifestyle
(425K)
ad-supported
10
Graff Cadillac
Graff Cadillac
Graff Cadillac
Cadillac - Mt Pleasant, MI
Free

Discover, test drive, and purchase vehicles from a dealership using your smartphone. Browse complete inventory and pricing, including offers and incentives. Schedule vehicle service appointments easily through the app.

Vehicle discovery with beaconsSmartphone interaction for purchasingComplete inventory and pricing
🛍️ Shopping
(1)
free
11
Sherman Chevy Cadillac Connect
Sherman Chevy Cadillac Connect
Sherman Chevy Cadillac Connect
Live car tracking & security
Free
📊 Productivity
(0)
12
Vera Motors MLink
Vera Motors MLink
Vera Motors MLink
by Vera Motors, LLC
Free

Easily search vehicle inventory, schedule service appointments, and stay updated with specials and announcements. Manage your vehicles, view service history, and access dealer reviews and manufacturer news.

Search vehicle inventoryOne-click service schedulingMessaging for specials and announcements
💼 Business
(22)
free
13
Sullivan Cadillac Connect
Sullivan Cadillac Connect
Sullivan Cadillac Connect
Live car tracking & security
Free
📊 Productivity
(0)
14
Weber Chevrolet
Weber Chevrolet
Weber Chevrolet
by Cinemotion LLC
Free

Explore and purchase vehicles from a dealership using your smartphone. The app offers complete inventory and pricing details, including current offers. You can also schedule vehicle service appointments directly through the application.

Discover and test drive vehiclesView complete inventory and pricingAccess latest offers and incentives
💼 Business
(2)
free
15
Bob McCosh Chevrolet Buick GMC Cadillac
Bob McCosh Chevrolet Buick GMC Cadillac
Bob McCosh Chevrolet Buick GMC Cadillac
by MobileAppLoader, LLC
Free

This app connects you with a Chevrolet, Buick, GMC, and Cadillac dealership. Easily request service appointments, get quotes on vehicles, and find directions. It offers a convenient way to manage your automotive needs.

Request service appointmentsOne-touch department callsFind dealership directions
💼 Business
(1)
free
16
Aljomaih Automotive
Aljomaih Automotive
Aljomaih Automotive
Exceptional Mobility Solutions
Free

Explore the latest car models from a leading official dealer in Saudi Arabia. This app simplifies the car-buying process, from browsing inventory and scheduling test drives to booking service appointments and managing aftersales care.

Browse latest car modelsSchedule test drivesBook service appointments
💼 Business
(36)
free
17
RNRLS
RNRLS
RNRLS
by RNRLS
Free
✈️ Travel
(0)
18
GM Club Apparel
GM Club Apparel
GM Club Apparel
GM Licensed Merchandise
Free

Explore and purchase officially licensed merchandise celebrating the rich history of General Motors brands. Connect with a passion for iconic vehicles from Buick, Cadillac, GMC, Pontiac, and Oldsmobile.

Licensed GM merchandiseBuick, Cadillac, GMC, Pontiac, Oldsmobile brandsConnects historical and current GM offerings
🌟 Lifestyle
(17)
ad-supported
19
My BMW
My BMW
My BMW
Your World. My BMW.
Free

Manage your BMW vehicle's status, remotely control features, plan trips, and book service appointments. Stay updated with BMW news and explore e-mobility services, all from your smartphone.

Check vehicle status and locationRemote control of vehicle functionsTrip planning with navigation and charging info
✈️ Travel
(481K)
free
20
Mushroom Identifier. Guidebook
Mushroom Identifier. Guidebook
Mushroom Identifier. Guidebook
Identify Picture - Shroom ID
Free
🔍 Reference
(0)

FAQ about Onstar Cadillac

What are the best onstar cadillac apps for iPhone?
myCadillac tops our onstar cadillac apps ranking as of August 2026, with a 4.8-star average from 160K App Store ratings, and it's free to download.
Yes — 20 of the top onstar cadillac apps we rank are free to download, including myCadillac and OnStar Guardian: Safety App.
myCadillac shows ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 26+ onstar cadillac apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
The myCadillac app allows you to remotely start your vehicle, set your cabin temperature, locate your car, and get walking directions to it. You can also monitor your fuel level, tire pressure, oil life, and odometer. Additionally, you can schedule service appointments and request Roadside Assistance.
Functionality and feature availability vary by vehicle, device, and the OnStar plan you are enrolled in. For specific details and limitations regarding your vehicle and plan, it is recommended to visit onstar.com.