Support
Help for every Grey Horse Software app. Answers to common questions are below, and we are one email away for everything else.
Get help
The fastest way to reach us is email. We read every message, and replies come from the engineers who build the apps.
support (at) greyhorsesoftware (dot) comTo help us help you quickly, please tell us which app you are using, your OS and app version, and what you expected to happen versus what actually happened. Screenshots are always welcome.
Automotive Diagnostics
RevOBD2
macOS · iPadOS
OBD-II vehicle diagnostics with live gauges, trouble codes, and module data. Learn more.
Which adapters work with RevOBD2?
RevOBD2 works with Bluetooth Low Energy and classic Bluetooth OBD-II adapters, including the OBDLink MX+ and CX and common ELM327-compatible dongles. On iPadOS, classic (MFi) adapters such as the OBDLink MX+ must first be paired in the iPad's Settings → Bluetooth. Some features that need a second vehicle bus (for example, Ford MS-CAN) require an adapter that supports it, such as the OBDLink MX+.
How does the trial and unlock work?
RevOBD2 is free to download and fully functional for a 7-day trial. After the trial, a one-time purchase unlocks the app permanently. On the App Store the purchase is a universal unlock: buy once and it applies to both your Mac and your iPad when signed in with the same Apple ID. Use "Restore Purchases" if an unlock doesn't appear on a device.
Can I try it without a car or adapter?
Yes. Turn on Demo Mode in Settings and choose the "Demo Adaptor" in the connect screen to explore live gauges, trouble codes, and module data using a simulated vehicle. No hardware required.
The adapter won't connect.
Check that Bluetooth is on and the adapter is powered (plugged into the OBD-II port with the ignition in the run position). On iPadOS, pair classic/MFi adapters in Settings → Bluetooth first, then pull to refresh the device list in the app. If it still fails, try the adapter with the engine running, and email us a diagnostic export (Settings → Export Diagnostic Data).
Is my vehicle data private?
Yes. All data RevOBD2 reads (VIN, trouble codes, live readings, logs, module info) stays on your device and is never transmitted to us or anyone else. See our Privacy Policy.
Which platforms are supported?
macOS and iPadOS. The gauge editor and the local automation (MCP) interface are macOS-only features.
Secure File Transfer
RelaySFTP
macOS · Windows · Linux
A modern, cross-platform file transfer client with a dual-pane browser and a fast, reliable transfer engine. Learn more.
Which protocols and services are supported?
SFTP, FTP, FTP-SSL, and S3-compatible storage including Amazon S3, Backblaze B2, Wasabi, and Cloudflare R2.
How does licensing work?
RelaySFTP carries a seven-day, full-featured evaluation. After that, a one-time license purchase from our purchase page keeps it running. No subscription.
Where are my server credentials kept?
Connection details you enter are stored only on your device and are used only to connect to the servers you configure. Transfers go directly between your machine and your servers; nothing passes through us.
Productivity
Dock-It
macOS
A dock-based launcher for the Mac. Create as many docks as you'd like, anchored or floating, across monitors and Spaces. Learn more.
How does licensing work?
Dock-It carries a seven-day, full-featured evaluation. After that, a one-time license purchase from our purchase page keeps it running. No subscription.
My docks disappeared after an update or restart.
Dock configurations are stored locally on your Mac and normally survive updates. If a dock goes missing, email us with your macOS and Dock-It versions and we'll get you sorted out.
Looking for our data practices? See the Privacy Policy. RevOBD2 is not affiliated with, or endorsed by, Ford, General Motors, or any vehicle manufacturer.