1. Home
  2. Topics
  3. Onstar Cadillac

Best Onstar Cadillac Apps

27+ iOS apps curated and reviewed

4.8 avg rating
20 free apps
Updated September 2026

Looking for free onstar cadillac apps? 20 of our 27+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Onstar Cadillac Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1myCadillacmyCadillacFree4.8★ (161K)YesNoSep 2026
2OnStar Guardian: Safety AppOnStar Guardian: Safety AppFree4.8★ (23K)YesNoSep 2026
3Cadillac FinancialCadillac FinancialFree4.7★ (318)NoNoSep 2026
4myChevroletmyChevroletFree4.8★ (956K)YesNoSep 2026
5GM FinancialGM FinancialFree4.8★ (51K)NoNoSep 2026
6CADILLAC MARINCADILLAC MARINFree—NoNoMay 2026
7Cadillac of NOLACadillac of NOLAFree—NoNoMay 2026
8Al Mansour CadillacAl Mansour CadillacFree—NoNoMay 2026

Top Picks for Onstar Cadillac

myCadillac#1

myCadillac by General Motors

Start, Lock & Schedule Service
Editor's Choice
🌟 Lifestyle
4.8😞(161K 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
  • 🔋 Battery drain when using app
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
  • 🚀 Phenomenal

Room to Improve

  • 🔋 Constant drain
  • 🔋 Battery hog
  • 🐛 Unreliable, glitchy, & getting worse
  • 🐛 Not accurate
  • 🐛 Errors on every page just trying to create an account
  • 🐛 Meh, nice for new phones

More Onstar Cadillac apps to explore

FAQ about Onstar Cadillac

What are the best onstar cadillac apps for iPhone?
myCadillac tops our onstar cadillac apps ranking as of September 2026, with a 4.8-star average from 161K 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 September 2026.
We track 27+ onstar cadillac apps on the iOS App Store as of September 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.