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Best Onstar Cadillac Apps

42+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated June 2026

Looking for free onstar cadillac apps? 20 of our 42+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Onstar Cadillac

myCadillac#1

myCadillac by General Motors

Start, Lock & Schedule Service
Editor's Choice
🌟 Lifestyle
4.8😞(156K ratings)
FreeAds
myCadillac screenshot 1
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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
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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 General Motors Financial Company, Inc.

MyAccount
Worth Considering
💰 Finance
4.8😐(51K ratings)
Free
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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
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
(88K)
subscription
5
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
(933K)
ad-supported
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
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
(414K)
ad-supported
9
Cadillac of NOLA
Cadillac of NOLA
Cadillac of NOLA
by Dealer's Choice, Inc.
Free
💼 Business
(0)
10
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
(111K)
free with in-app purchases
11
Onstar Negocios
Onstar Negocios
Onstar Negocios
Fleet managment.
Free
📊 Productivity
(0)
12
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
(25K)
freemium
13
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
14
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
15
CADILLAC MARIN
CADILLAC MARIN
CADILLAC MARIN
by Dealer's Choice, Inc.
Free
💼 Business
(0)
16
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
17
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
18
Epipal: Seizure Alerts & Log
Epipal: Seizure Alerts & Log
Epipal: Seizure Alerts & Log
Seizure & Epilepsy Tracker
Free

This app helps manage epilepsy by detecting potential seizures using phone and watch sensors, sending alerts to emergency contacts, and facilitating medication reminders and a shared journal for tracking events and triggers. It aims to provide peace of mind and foster a collaborative approach to epilepsy management for individuals and their families.

Seizure detection via phone/watch sensorsEmergency alerts to contactsShared medication reminders
💪 Health & Fitness
(138)
subscription
19
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
20
Gather: GPS Location Sharing
Gather: GPS Location Sharing
Gather: GPS Location Sharing
Family Locator & Daily Updates
Free

This app connects families and friends through GPS location sharing, offering real-time updates on arrivals, departures, and trips. It also provides vehicle maintenance reminders, service booking, and driving insights.

Real-time GPS location sharingArrival and departure notificationsLogged daily trips and driving insights
🌟 Lifestyle
(1.3K)
free with in-app purchases