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Best Onstar Cadillac Apps

45+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated July 2026

Looking for free onstar cadillac apps? 20 of our 45+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Onstar Cadillac Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1myCadillacmyCadillacFree4.8★ (158K)YesNoAug 2026
2OnStar Guardian: Safety AppOnStar Guardian: Safety AppFree4.8★ (22K)YesNoAug 2026
3GM FinancialGM FinancialFree4.8★ (51K)NoNoAug 2026
4myChevroletmyChevroletFree4.8★ (945K)YesNoAug 2026
5KeyConnect Digital Car KeyKeyConnect Digital Car KeyFree4.6★ (89K)YesYesAug 2026
6Cadillac FinancialCadillac FinancialFree4.7★ (318)NoNoJul 2026
7OnStar Dealer RewardsOnStar Dealer RewardsFree3.6★ (13)NoNoJul 2026
8Cadillac of NOLACadillac of NOLAFree—NoNoMay 2026

Top Picks for Onstar Cadillac

myCadillac#1

myCadillac by General Motors Company

Start, Lock & Schedule Service
Editor's Choice
🌟 Lifestyle
4.8😞(158K 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😐(22K 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
GM Financial#3

GM Financial by GM Financial

MyAccount
Worth Considering
💰 Finance
4.8😐(51K ratings)
Free
GM Financial screenshot 1
GM Financial screenshot 2
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GM Financial screenshot 6

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.

What We Love

  • 👍 Easy to use app for making payments
  • 💡 Ability to view payment history and account details
  • 🚀 Convenient payment scheduling options
  • 🤝 Helpful and understanding customer support

Room to Improve

  • 🐛 Recurring login issues and password reset problems
  • 🔍 Lack of transparency around payment application and payoff amounts
  • 🤖 Unhelpful or unresponsive automated support

More Onstar Cadillac apps to explore

4
myChevrolet
myChevrolet
myChevrolet
Start, Lock & Schedule Service
Free

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.

Remote start and climate controlVehicle location and directionsFuel, tire pressure, and oil monitoring
🌟 Lifestyle
(945K)
ad-supported
5
KeyConnect Digital Car Key
KeyConnect Digital Car Key
KeyConnect Digital Car Key
Remote Connect & Car Link
Free

Manage your vehicles remotely and securely. Lock/unlock doors, check real-time car status, store important documents, and track expenses. Offers GPS navigation and maintenance history for over 40 car makes.

Remote lock and unlockReal-time car status monitoringGPS car locator
🔧 Utilities
(89K)
subscription
6
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
7
OnStar Dealer Rewards
OnStar Dealer Rewards
OnStar Dealer Rewards
by Maritz Holdings LLC
Free

This app is an incentive program for non-GM dealers to help customers sign up for OnStar services. It allows users to track rewards, file claims, and manage customer sign-ups directly from their mobile device.

Customer OnStar sign-up assistanceClaim filingRewards activity monitoring
💼 Business
(13)
free
8
Cadillac of NOLA
Cadillac of NOLA
Cadillac of NOLA
by Dealer's Choice, Inc.
Free
💼 Business
(0)
9
Onstar Negocios
Onstar Negocios
Onstar Negocios
Fleet managment.
Free
📊 Productivity
(0)
10
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
(420K)
ad-supported
11
myBuick
myBuick
myBuick
Start, Lock & Schedule Service
Free

Control your vehicle remotely, monitor its status, and access important information. Schedule maintenance and get assistance when you need it, all from your smartphone.

Remote start, lock, and unlockMonitor fuel, tire pressure, and oil lifeView odometer readings
🌟 Lifestyle
(113K)
free with in-app purchases
12
OnStar Vehicle Insights
OnStar Vehicle Insights
OnStar Vehicle Insights
Fleet Vehicle Tracking
Free

This telematics tool helps businesses manage their vehicle fleets efficiently. It offers real-time performance tracking, health diagnostics, and driver feedback for vehicles from 2015 and newer GM models. The service is available with no long-term contract and a low monthly payment.

Real-time vehicle performanceHealth diagnosticsVehicle tracking
📊 Productivity
(1)
free
13
Car Play Connect: Remote Start
Car Play Connect: Remote Start
Car Play Connect: Remote Start
Car Sync & Connect, Auto Link
Free

Transform your car into a smart, connected hub. This app offers AI assistance, remote car control, real-time health insights, and seamless integration with navigation and entertainment.

AI-powered car assistantRemote car start, lock, and unlockDriving mode with navigation and music
🔧 Utilities
(26K)
freemium
14
Car Play Connect: Remote Sync
Car Play Connect: Remote Sync
Car Play Connect: Remote Sync
Digital Mobile Driving
Free

Monitor your vehicle's vital information, track performance stats, and locate essential services like gas stations and EV chargers. This app enhances your driving experience by keeping key data accessible and providing navigation assistance.

Vehicle information dashboardPerformance stats trackingFuel and battery level monitoring
🔧 Utilities
(20K)
subscription
15
CADILLAC MARIN
CADILLAC MARIN
CADILLAC MARIN
by Dealer's Choice, Inc.
Free
💼 Business
(0)
16
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
17
Waze Navigation & Live Traffic
Waze Navigation & Live Traffic
Waze Navigation & Live Traffic
Avoid traffic, police, hazards
Free

Navigate your commute with real-time traffic updates and alerts from a community of drivers. Get accurate ETAs, avoid hazards, and find gas stations and parking. Integrates with your car's display for seamless use.

Live traffic updatesReal-time safety alertsAccurate ETAs
🗺️ Navigation
(3.2M)
ad-supported
18
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
19
Al Mansour Cadillac
Al Mansour Cadillac
Al Mansour Cadillac
Cadillac
Free
💼 Business
(0)
20
Car Play Connect, Sync & Care
Car Play Connect, Sync & Care
Car Play Connect, Sync & Care
My Remote Pass & Mobile Link 3
Free

Monitor your vehicle's vital statistics like fuel, battery, and tire pressure in real-time. The app also offers a dedicated driving mode for safer navigation and a service tracker to manage maintenance history. Keep all your car information and maintenance records in one convenient place.

Real-time vehicle status monitoringEnhanced Driving Mode with new layoutService Tracker for maintenance history
🔧 Utilities
(48K)
free with in-app purchases

FAQ about Onstar Cadillac

What are the best onstar cadillac apps for iPhone?
myCadillac tops our onstar cadillac apps ranking as of July 2026, with a 4.8-star average from 158K 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 July 2026.
We track 45+ onstar cadillac apps on the iOS App Store as of July 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.