CSMT vs Linear Access Control App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CSMT
This mobile tool assists General Motors dealer service personnel with various tasks. It allows for pre-authorization of repairs, efficient part returns using photos, and submission of detailed reports. Users can also look up vehicle recalls and access the Service Workbench.
- Pre-authorize warrantable repairs
- Photo-assisted part return process
- Submit part information for traceability
- Submit detailed field product reports
- Lookup and view vehicle recalls
- Access Service Workbench
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Certified Service Mobile Toolbox (CSMT) is a mobile tool for General Motors Dealer Service personnel. Within it you can: • Pre-authorize specific warrantable repairs (PRA) • Use photos to improve efficiency of the Part Return Process (PPR) • Send part information for traceability (RPT) • Submit detailed Field Product Reports (FPR) • Lookup and view recalls on vehicles (Recall) All modules have the ability to include embedded images and video of the vehicle in question.
Linear Access Control App
This app allows your iPhone to function as an electronic access credential for systems with compatible readers. Download, manage, and use your mobile access credentials securely, eliminating the need for physical cards. It leverages your smartphone's built-in security features for enhanced protection.
- iPhone as electronic access credential
- No sensitive personal information disclosure
- Eliminates physical access credentials
- Leverages smartphone security
- Stores multiple access credentials
- Color-coded credential labels
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The Linear Access Control App is designed to operate on an Apple iPhone, and in conjunction with electronic access control systems making use of Linear mobile-ready readers, allows the iPhone to be the access credential. This app allows a system user to download, manage and use their Linear mobile access credentials in an intuitive and practical manner. With the Linear Access Control App enabled and valid Linear Mobile Access Credentials loaded, an iPhone user may now enter into any authorized access system. FEATURES: - Use the iPhone as an electronic access control credential - No requirement for disclosure of sensitive personal information - Eliminate the need to carry physical access credentials - Protect credentials behind strong smartphone security protocols - Leverages biometric and multi-factor authentication built-in to the smartphone - Bluetooth Low Energy (BLE) removes the hassle of pairing - Add new credentials with the touch of a button - Store multiple access credentials in one convenient app - Apply color-coded labels identifying between multiple credentials
Screenshots
Verdict
The clearest difference is rating: CSMT at 4.6 against Linear Access Control App's 1.0. CSMT also leads on update cadence (every 3 months vs every 30 months) and ratings volume (450 vs 2). Linear Access Control App's advantage is monetization model (free vs ad-supported). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CSMT holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: CSMT has 450 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 18% of CSMT's written reviews are positive against 0% of Linear Access Control App's.
CSMT ships an update every 3 months, Linear Access Control App every 30 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | CSMT | Linear Access Control App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (450 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 18.2% of reviews — better | 0.0% of reviews |
| Number of ratings | 450 — better | 2 |
| Update frequency | Every 3 months — better | Every 30 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 91 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | General Motors Company | Nice North America LLC |
Customer experience
CSMT
Linear Access Control App
Bugs and requests
CSMT
Reported bugs
17 issues- Battery drain since app download
- Incompatible with older iOS versions
- Cannot log in after Microsoft entry
- App never sends email
- Login broken after update
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- No notifications when response is given
- PRA disappears from history, reappears after reload
- App won't zoom properly to take photos
- Cannot submit parts
- Cannot add photos taken outside the app
- Cannot upload previously taken pictures/videos
- Feedback option does not lead to next screen
- App does not allow sending to GM
- Accessing camera roll for pictures removed
- Service workbench inaccessible
- App crashes after entering username and password
- No link to change forgotten password and username
Requested features
5 requests- Allow choosing mail app for submission
- Submit without using email
- Allow submission using phone's internet
- Improve video application functionality
- Allow submitting more than one part at a time
Linear Access Control App
Not enough reviews yet to summarise bugs or requests.
In-app purchases
CSMT
No in-app purchases
Linear Access Control App
No in-app purchases
Questions
Is CSMT free?
Is Linear Access Control App free?
Which has better reviews, CSMT or Linear Access Control App?
Do CSMT or Linear Access Control App have ads?
Which is updated more often, CSMT or Linear Access Control App?
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