Comparison

myChevrolet vs OnStar Guardian

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

Head to head
About

myChevrolet

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.

Highlights
  • Remote start and climate control
  • Vehicle location and directions
  • Fuel, tire pressure, and oil monitoring
  • Odometer tracking
  • Service scheduling
  • Roadside Assistance requests
Features
Currently charting
Read full description

Stay connected to your Chevrolet from the palm of your hand with the myChevrolet app. Use your phone to locate your vehicle from anywhere, check its health, manage charging, prepare your cabin before you leave, and get help when you need it. Download the app that is always with you to make every drive easier. With the myChevrolet app, you can: • Remotely start, lock, and unlock your vehicle. • Check fuel level, tire pressure, oil life, and more. • Set your preferred cabin temperature. • View charging status and locate charging stations. • Plan trips and navigate with maps. • Request help with Roadside Assistance. • Schedule service, find your dealership, and more. Disclosures: Mobile app functionality is available on select devices and requires data connection. Services availability, features and functionality vary by vehicle, device and the plan you are enrolled in. Roadside service availability and providers vary by country. Map coverage, features and functionality varies by country. See onstar.com for details and limitations.

About

OnStar Guardian

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.

Highlights
  • Mobile Crash Response
  • Roadside Assistance
  • Family Location Status
  • Emergency Services
  • Share with Family
Features
Read full description

SAFETY SERVICES RIGHT ON YOUR PHONE   Get family safety services — Roadside Assistance, help in a crash, family locator and Emergency Services — with the OnStar Guardian® app. No matter where you are, we're with you and your family – in any vehicle, even on your motorcycle. Eligible OnStar Members receive the OnStar Guardian app as part of their plan. A standalone plan is only $15 a month. Plus, you can share the app with up to 7 friends or family members at no additional cost.   FAMILY SAFETY THAT GOES WHERE YOU GO   Mobile Crash Response •      Crash detection that can send for help automatically •      Smartphone sensors can detect a car accident and alert an OnStar Advisor •      Help in a crash in any vehicle — or on your motorcycle   Roadside Assistance •      Don't get stranded. Get help on the road, jump a dead battery, get assistance with a flat tire — you can even get fuel delivered or request a tow •      Roadside Assistance for any vehicle or motorcycle   Location Status •      Togetherness when you're apart. The family locator that lets you share and save real-time locations, view a live map, even send departure and arrival notifications   Emergency Services •    Help when it's needed. The red Emergency button provides priority access to an OnStar Emergency Advisor 24/7 •    Get specially trained assistance with medical issues, severe weather and more — all while our Advisors send First Responders to your exact location     LIMITATIONS   Price subject to taxes and fees. See onstar.com/plans/guardian-app for details and limitations.   U.S. and Canada only. Available on select Apple devices. OnStar Guardian service plan, cell reception, GPS signal and device data connection required. May not transmit all crash data. You may cancel at any time by calling 1.888.4ONSTAR (1.888.466.7827).   Location Status services designed to locate compatible smartphones with Location Services permission enabled. Functionality varies by mobile device and plan. Data rates may apply. Terms and limitations apply.   Roadside services provided by third-party providers. Roadside services are for passenger vehicles (cars and trucks) and motorcycles only. Limitations and restrictions apply. Towing services can be used four times per year then additional charges apply. Additional charges apply to tire changes when a spare tire is not provided.     Up to seven additional individuals can be added to the “My Family” section within the app.

Screenshots

myChevrolet4 screens
OnStar Guardian4 screens

Verdict

The call

The clearest difference is ratings volume: myChevrolet at 968K against OnStar Guardian's 23K. myChevrolet also leads on update cadence (fortnightly vs every 5 weeks) and monetization model (ad-supported vs free with in-app purchases). On price, rating, review sentiment and ads 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 — 4.8 for myChevrolet against 4.8 for OnStar Guardian. That said, the two scores are not equally well evidenced: myChevrolet has 968K ratings behind it against 23K, so its average is the more settled of the two. Written reviews are what separate them: 37% of myChevrolet's written reviews are positive against 32% of OnStar Guardian's.

UpkeepUpdate frequency

myChevrolet ships an update fortnightly, OnStar Guardian every 5 weeks. Both last shipped on September 24, 2026.

Scorecard4 real differences · 7 level
myChevrolet versus OnStar Guardian: the parameters behind the verdict, then further details
ParametermyChevroletOnStar Guardian
PriceFreeFree
Rating4.8 (968K ratings)4.8 (23K ratings)
Positive reviews37.0% of reviews — better32.1% of reviews
Number of ratings968K — better23K
Update frequencyFortnightly — betterEvery 5 weeks
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported — betterFree with in-app purchases
Best chart rank#51 — better
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS16.416.0 — better
Further details — not scored
Size288 MB171 MB
Age rating17+4+
DeveloperGeneral Motors CompanyOnStar, LLC

Customer experience

myChevrolet

All ratings968,400 ratings
Positive95.9%
Neutral1.6%
Negative2.4%
Written reviews2,868 reviews
Positive37.0%
Neutral11.0%
Negative52.0%

OnStar Guardian

All ratings22,559 ratings
Positive94.5%
Neutral2.1%
Negative3.3%
Written reviews221 reviews
Positive32.1%
Neutral10.0%
Negative57.9%

User reviews

myChevrolet

From 968K App Store ratings

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
  • 🤔 Confusing app navigation and UI changes
  • 🔒 Frustrating login and authentication issues

OnStar Guardian

From 23K App Store ratings

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

Bugs and requests

myChevrolet

Reported bugs

3 issues
  • Scheduled service appointments not syncing with dealerships
  • Charge status and battery range data inaccuracies
  • Apple Watch app functionality issues and unreliable connectivity

Requested features

4 requests
  • Ability to control climate settings remotely
  • Trip planning and charging station integration
  • Comprehensive vehicle history and maintenance tracking
  • Family sharing and multi-user support

OnStar Guardian

Reported bugs

4 issues
  • Location not accurate
  • Keeps logging out
  • Crashes regularly
  • Incompatible with older devices

Requested features

2 requests
  • Customizable notifications
  • Advanced analytics dashboard

In-app purchases

None

myChevrolet

No in-app purchases

None

OnStar Guardian

No in-app purchases

Questions

Is myChevrolet free?
myChevrolet is free to download, with no in-app purchases.
Is OnStar Guardian free?
OnStar Guardian is free to download, with no in-app purchases.
Which has better reviews, myChevrolet or OnStar Guardian?
myChevrolet and OnStar Guardian are both rated 4.8 out of 5 on the App Store, from 968K and 23K ratings respectively.
Do myChevrolet or OnStar Guardian have ads?
Both myChevrolet and OnStar Guardian show ads.
Which is updated more often, myChevrolet or OnStar Guardian?
myChevrolet ships an update fortnightly, and OnStar Guardian every 5 weeks. Most recently, myChevrolet was updated on September 24, 2026 and OnStar Guardian on September 24, 2026.

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