FORScan Viewer vs Key Genius
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FORScan Viewer
This application allows users to read and view information about the on-board network of Ford, Mazda, Lincoln, and Mercury vehicles. It supports various OBD adapters and displays diagnostic trouble codes for all modules.
- Read vehicle on-board network configuration
- View Diagnostic Trouble Codes (DTC)
- Supports Ford, Mazda, Lincoln, Mercury vehicles
- Compatible with OBDLink MX+, vLinker adapters
- Displays module information
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FORScan Viewer is an application that allows users to connect to a compatible OBD adapter and view information about the on-board network of Ford, Mazda, Lincoln and Mercury vehicles. FORScan Viewer is an independent third-party application and is not affiliated with, endorsed by, sponsored by, or approved by Ford Motor Company, Mazda Motor Corporation, or their affiliated brands. Ford, Lincoln, Mercury, and Mazda are trademarks of their respective owners and are used solely to describe vehicle compatibility. The application communicates only with compatible third-party OBD-II adapters owned and operated by the user. The application does not control, modify, or operate any equipment manufactured by Ford, Mazda, Lincoln, or Mercury. SUPPORTED OBD ADAPTERS - OBDLink MX+ (recommended) - vLinker FS Bluetooth (recommended) - vLinker FD BLE (recommended) - other ELM327-compatible WiFi or BLE adapter (not recommended). Attention! Some ELM327 adapters are not fully compatible with this application and may not work properly. COMPATIBILITY FORScan Viewer is designed to display information for the following vehicles: Ford, Lincoln, Mercury: 1996-2022 models, some 1994-1995 models - Mazda: 1996-2022 models. Important note: Mazda 7G models (new Mazda 3, CX-30, MX-30, CX-50, etc) have limited or no support! - Other vehicle manufacturers are NOT supported FEATURES - Reading and displaying information about the on-board network configuration of the connected vehicle (modules), including Diagnostic Trouble Codes (DTC) for all modules - More functions are available in FORScan Lite LEGAL NOTICE FORScan Viewer does not contain proprietary vehicle software, firmware, service manuals, or other copyrighted materials owned by vehicle manufacturers. Vehicle data displayed by the application is obtained through standard diagnostic interfaces and user-authorized connections.
Key Genius
Easily program new car keys at home using your smartphone. Compatible with thousands of vehicle models, this app guides you through the DIY installation process after receiving a pre-cut key.
- DIY car key pairing
- Compatible with thousands of vehicles
- Step-by-step phone instructions
- Home installation
- Pre-cut key delivery
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The Key Genius lets you easily “pair” new car keys using an app on your phone. The “do-it-yourself” installer is compatible with thousands of vehicle makes and models. Skip the dealership, add new keys to your car at home. Just purchase a key from CarKeysExpress.com/store, submit a photo of your key, and we’ll ship you the key pre-cut and ready for pairing. Then, download the app, plug the installer into your vehicle’s diagnostic port, and follow simple instructions on your phone.
Screenshots
Verdict
The clearest difference is monetization model: FORScan Viewer at free against Key Genius's free with in-app purchases. On price, rating, review sentiment and ratings volume 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.
FORScan Viewer holds the better App Store score, 2.7 against 2.5. Both are backed by a comparable volume of ratings — 105 and 73 respectively. Written reviews complicate that: 32% of FORScan Viewer's written reviews are positive against 33% of Key Genius's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.
| Parameter | FORScan Viewer | Key Genius |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (105 ratings) — better | 2.5 (73 ratings) |
| Positive reviews | 31.6% of reviews | 33.3% of reviews — better |
| Number of ratings | 105 — better | 73 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 9.0 — better | 10.0 |
| Further details — not scored | ||
| Size | 80 MB | 161 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleksei Savin | Autel Intelligent Technology Co., Ltd. |
Customer experience
FORScan Viewer
Key Genius
Bugs and requests
FORScan Viewer
Reported bugs
8 issues- App fails to detect OBD2 adapters despite successful pairing
- Bluetooth connection drops and fails to reconnect
- WiFi adapter detection not working after updates
- Error code clearing functionality non-functional
- Vehicle identification fails on certain models
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- App crashes during connection attempts
- Permission settings not persisting correctly
- Incompatibility with specific adapter models (iCar Pro, Vgate, etc.)
Requested features
8 requests- Bluetooth Low Energy (BLE) adapter support
- Full feature parity between iOS and Windows versions
- Turkish language support
- Improved UI scaling for modern iPhones
- Expanded vehicle compatibility
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- Programming capabilities in iOS version
- Better adapter compatibility documentation
- Support for non-Ford vehicle manufacturers
Key Genius
Not enough reviews yet to summarise bugs or requests.
In-app purchases
FORScan Viewer
No in-app purchases
Key Genius
No in-app purchases
Questions
Is FORScan Viewer free?
Is Key Genius free?
Which has better reviews, FORScan Viewer or Key Genius?
Do FORScan Viewer or Key Genius have ads?
Which is updated more often, FORScan Viewer or Key Genius?
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