Tunabelly Software

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TG Pro 2.18

Peek inside your Mac with fan control, monitoring & detailed temperatures.

Special promo: Add Disk Diet to clean your Mac's drive.

Compatible with Mac OS X 10.7 and higher.
Already have a license and need to download TG Pro? Click here.

Take a look at what's going on inside your Mac with TG Pro - no other app shows more temperature sensors or has as many options for notifications and fan speeds.

Find out which components are getting hot (and potentially overheating), turn up the fan speeds to cool down your Mac, get notifications for temperature alerts along with many other fantastic features. Plus, see if any sensors or fans are defective with the built-in hardware diagnostics.

See why thousands of people trust TG Pro as the go-to app for temperatures and fan control. Download the free trial today.

An in-depth TG Pro tutorial is also available to help get you started.
This is the Rolls Royce of fan control and temp monitoring apps.
MacUpdate Review from Ryans
If you want to keep an eye on the temperature of the battery in your laptop...for Mac my choice would be TG Pro.
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Of the very few number of Mac apps which monitor temperature and manage fans, TG Pro is the one I prefer.

Jeffrey Mincey from mac360.com

TG Pro helped diagnose a problem I suspected I was having with my fans and it was helpful to have it confirmed.

Mac App Store Review from Ylanthe
See the current and maximum recorded temperatures (in Celsius or Fahrenheit) for every temperature sensor in your Mac.
View and control the speeds for every fan. With Auto Boost, have the fans go to a specific speed when a predefined temperature is hit.
Always available status icon menu includes all temperatures, fans and manual controls.
Show a notification if a sensor or the Mac gets too hot, or when the fans are turned up with Auto Boost.
Monitor remote servers by having an email sent instead of a local notification.
Discover faulty fans, temperature sensors and batteries with the built-in diagnostics.
Log all temperatures, fan speeds, diagnostics and notifications to a CSV file.
Run in the background with configurable info displayed in the menu bar.
Fix iMac fan noise after HD replacement. See how using TG Pro.
Supports all Macs, including the new Mac Pro 2013 model as well as all MacBook Pros (including 2015 models), iMacs, Mac Minis, MacBook Airs and older Mac Pros.

Click here to see what's changed in TG Pro 2.18 (October 6, 2016) and previous versions

  • [Improvement] Most updates will no longer require entering the administrator password multiple times.
  • [Fixed] Issue where it was possible that the fan speed would not be lowered after an Auto Boost rule turned off.
Version 2.17
  • [New] Using specific sensor lists and labelling for 2006 MacPro (including 8x core), Early 2008 MacPro, Early 2009 MacPro, and Mid 2010-2012 MacPro models.
  • [Improvement] Changed the under-the-hood logic for fan Auto Boost to be more reliable.
  • [Improvement] Auto Boost rules now start from the current rpm instead of always going to the minimum first.
  • [Improvement] Temperatures and fan speeds will not be checked for a few seconds after the system wakes up from sleep. This should help with abnormal temperatures being reported by the sensors in this situation.
  • [Improvement] Turned off any type of anonymous analytics from HockeySDK which includes any network connections it was making.
  • [Fixed] Issue where after waking from sleep the manual or Auto Boost rules to lower a fan would no longer work.
  • [Fixed] Issue where setting override system control could set it for all fans instead of just one.
  • [Fixed] Issue where some Auto Boost rules wouldn't be triggered.
  • [Fixed] Issue where a separator could be missing between the CPU and logic board sensors in the status menu.
  • [Fixed] Updated Paddle framework to fix their bug where some licenses would revert back to trial mode.
Version 2.16
  • [Improvement] Optimized three different areas for slightly lower CPU usage when updating temperaures and fan speeds.
  • [Fixed] Issue that would happen in OS X 10.10.2, preventing the app from launching correctly.
Version 2.15
  • [Fixed] Issue where a bug in OS X 10.9 was causing a crash on app launch.
Version 2.14
  • [Fixed] Improved app stabilty by resolving a few infrequent crashes.
  • [New] Folder creation is now availble when choosing the location of the log file.
  • [New] Show an alert if there is a problem when writing to the log file. Example: If the disk is out of space.
  • [New] Added message in both the main window and the status menu when the hardware has turned off the fan. This can occur when the temperatures are low enough on 2015 MacBook Pro 13 inch models.
Version 2.13
  • [Fixed] Updated Paddle framework to resolve potential crash when purchasing using PayPal.
  • [Improvement] Minor tweaks under the hood and to the UI.
Version 2.12
  • [Fixed] Updated Paddle framework to resolve issue where it was possible to have an older license revert back to a trial.
Version 2.11
  • [New] Working around an issue in the Paddle framework where for a small number of customers the license could be lost.
Version 2.10
  • [Fixed] Updated the Paddle framework which resolves a bug in it where a small percertange of customers had to re-enter their license key after updating the app.
  • [Fixed] Issue where it would sometimes show "Invalid Fan" in the menubar.
  • [Fixed] Issue where the daily log file would be re-created each time the app started up. Now it will simply append to the log.
  • [Fixed] Issue where choosing a fan to display in the menubar would revert to Average RPM.
  • [New] Using clearer wording for the battery health.
  • [New] On Mac models where there are no fans (ex: 2015 MacBook), the fan controls are now hidden in both the main window and the status menu for a cleaner look.
  • [New] Minor UI tweaks and fixes.
Version 2.9.12
  • [Fixed] Issue where battery health wouldn't appear right away for licensed versions of the app.
  • [Fixed] Issue where temperature sensor diagnostics would show a green circle even when a sensor was bad.
  • [Fixed] Potential crash on app startup.
Version 2.9.11
  • [Fixed] Issue where Manual and Auto Boost fan modes might not be saved properly when the app quit.
  • [New] Added battery health under Diagnostics for Macs with an internal battery. This provides the condition of the battery, any reported hardware issues and the number of charging cycles left according to the battery design.
  • [New] Paddle framework has been updated which resolves numerous issues related to app stability and purchasing.
  • [New] Removed the ability to show the main window when an Auto Boost rule is activated.
Version 2.9.10
  • [Fixed] Improved app reliability (fixed potential crashes on app startup).
  • [Fixed] Issue where using a new log file each day could leave the previous day's log empty.
  • [Fixed] Issue where in rare cases the menubar/menu item text wouldn't display.
  • [Fixed] Issue where the check for updates frequency popup was disabled.
  • [New] Using a custom control so the fan mode buttons display correctly when using a dark menubar.
  • [New] Added feature where you can have the app create and securely upload a support package to Tunabelly. This includes a basic system profiler report (no serial number), console log (with any urls removed), screenshot of the main window, app preferences, crash logs and temperature/fan info.
Version 2.9.9
  • [New] Added preference to optionally disable fan control when the Mac goes to sleep. This is especially helpful for iMacs where the HD has been replaced and the fan speed is being lowered.
Version 2.9.8
  • [Fixed] Issue where using the override fan control wouldn't always be immediately active.
  • [Fixed] Issue where the log file path wouldn't be visible if logging was disabled.
  • [Fixed] Issue where an empty TG Pro Log.csv would be created when it shouldn't have been.
  • [New] Updated Sparkle framework to 1.14.0 to resolve potential security risk (see article on Arstechnica for more info).
  • [New] Added preference to use ISO8601 dates (YY-MM-DD) for the log file names.
  • [New] Replaced Average CPU notification with Highest CPU.
  • [New] Added ability to turn individual notifications types on or off.
  • [New] Improved the way Auto Boost configs are stored for future updates if more sensors become available.
  • [New] Showing license email and key in the about TG Pro dialog.
Version 2.9.7
  • [New] Added feature to override the system to lower fan speeds. This new feature can be turned on/off per fan.
  • [New] Added feature to easily copy all Auto Boost settings from one power source to the other.
  • [New] Improved overall reliability of fan control.
  • [New] Improved CPU usage slightly.
  • [New] Improved sensor naming for some Macs.
  • [Fixed] Issue where the previous manual fan control setting wouldn't be restored on app startup.
  • [Fixed] Issue with menu bar icon overlapping the text.
  • [Fixed] Issue where Auto Boost might not come on when expected.
  • [Fixed] Issue where some of the menu bar preference checkboxes were slow to update when clicked.
Version 2.9.5
  • [Fixed] Auto Boost not working.
Version 2.9.4
  • [Fixed] Issue with manual fan control settings not persisting across app re-launches.
  • [Fixed] Issue where switching from manual to Auto Boost would sometimes keep the manual setting.
  • [Fixed] Issue with text including separators not appearing in the menu bar in dark mode.
  • [New] Improved app stability (translation: less crashes).
  • [New] Improved CPU usage (translation: less CPU usage).
Version 2.9.3
  • [Fixed] Issue with fan control sometimes not working after updating.
  • [Fixed] Issue with menu bar text not displaying properly.
Version 2.9.2
  • [Fixed] Issue with menu bar text not displaying properly in dark mode.
  • [Fixed] Improved sesnor naming for Early 2011 MacBookPro models.
Version 2.9.1
  • [Fixed] Launching app on systems with less than OS X 10.10.
Version 2.9
  • [New] Fan control is now simpler. There are three options - System, Manual and Auto Boost.
  • [New] Added option to use colors for the menu bar temperatures.
  • [New] Added ability to increase specific fans (instead of all) in Auto Boost rules.
  • [New] Added Highest and Highest CPU temperature options for use in both the menu bar & Auto Boost rules.
  • [New] Added tooltip for the menu bar icon with descriptions of what's being shown.
  • [New] Improved sensor naming for some Mac models.
  • [Fixed] Issue where nothing would update after registering.
  • [Fixed] Issue where "Invalid Fan" would show in the menu bar.
  • [Fixed] Issue where it was possible that some Auto Boost rules would not work correctly.
  • [Fixed] Issue where drive temperatures were not available in Auto Boost rules.
  • [Fixed] Issue where only one Auto Boost notification would ever appear.
  • [Fixed] Potential crash on app launch.
  • [Fixed] Potential crash when checking drive temperatures.
Version 2.8.8
  • [New] Improved support for the 15" "2015 MacBook Pro graphics temperatures.
  • [New] Improved the user experience on first launch.
  • [New] App analytics (anonymous things like os/app version, etc.) can now be turned off in the preferences.
  • [Fixed] Sequential numbering of memory sensors on certain Mac Pro models.
  • [Fixed] Updated Paddle framework which resolves a potential crash on app startup and the licensing window not closing on El Capitan.
Version 2.8.7
  • [New] Improved compatibility with El Capitan (10.11), including when installing future updates.
Version 2.8.5
  • [Fixed] Potential issue where the license might not be stored properly.
Version 2.8.3
  • [Fixed] Potential crash when showing the main window on OS X 10.7 and 10.8.
  • [Fixed] Issue where the fan helper might not install properly.
  • [Fixed] Issue when running on OS X 10.11 (El Capitan).
  • [New] Improved shutdown code descriptions.
  • [New] Icons for some of the preference tabs.
Version 2.8.3
  • [Fixed] Issue that was causing custom support for the 2015 MacBookPro 15" and 2013 MacPro models to not work.
  • [Fixed] Issue relating to showing a log file error dialog when a custom folder was used.
Version 2.8.2
  • [Fixed] Issue where the AMD Radeon GPU would always show N/A (on 2015 MacBook Pro 15").
  • [Fixed] Reduced number of file accesses when checking if the trial is over.
  • [Fixed] Only show a log file error dialog once.
  • [New] Improved and more accurate naming of temperature sensors.
  • [New] Improved numbering when there are multiple temperature sensors of the same kind.
  • [New] Improved support for MacBookPro11,5 models (2015 MacBook Pro 15")
Version 2.8.1
  • [New] Mac Pro relative (prochot) CPU sensors are now in a separate area and not included in temperature averages.
  • [New] Added link to the new TG Pro app tutorial.
  • [Fixed] Potential issue where GPU temperatures could be incorrect (on 15" 2015 MacBook Pros).
  • [Fixed] Issue where the AMD Radeon R9 M370X would always show N/A (on 15" 2015 MacBook Pros).
  • [Fixed] Duplicate fans in the preferences popup.
Version 2.8
  • [New] All sensors are now available for Auto Boost rules. Now it's possible to link a fan increase to a particular sensor.
  • [New] If a fan is defective, a help popover is visible to describe what that means.
  • [New] Added a menu item to manually re-install the fan helper app.
  • [Fixed] Only show a shutdown notification once per machine restart.
  • [Fixed] Hide the battery Auto Boost rules on Macs where there isn't a battery.
  • [Fixed] Issue where it was possible to get a notification for an abnormally hot Intel Iris Pro sensor.
  • [Fixed] Issue where it was possible the app would quit when switching from normal to background mode.
  • [Fixed] Duplicate prompts to install the fan helper app.
  • [Updated] The UI of the diagnostic section.
Version 2.7.4
  • [Fixed] Issue where Auto Boost fan speed would always increase.
  • [Improved] Reliabilty of temperature validation.
Version 2.7.3
  • [Fixed] Issue where Auto Boost fan speed would go above what was set in the preferences.
Version 2.7.2
  • [Fixed] Fan control issues with 2015 MacBook Pros.
  • [Improved] Further reduced the amount of console logging.
Version 2.7.1
  • [New] Fan control support for 2015 MacBook Pros.
  • [New] Added preference to allow an empty password for email notifications.
  • [New] Added preference to toggle extra console output.
  • [Fixed] Preferences window no longer closes when switching to background mode.
  • [Improved] Reduced the amount of console logging.
Version 2.6
  • [UPDATED] Many new temperature sensors + better naming for 2013 Mac Pro.
  • [UPDATED] Improved names for battery temperature sensors.
  • [FIXED] Resolved issue where switching between power sources could cause Auto Boost to not work.
  • [FIXED] Resolved issue where it was possible that Auto Boost would not start.
  • [NEW] Added extra minimum fan speed safeguard./li>
  • [UPDATED] Main window area icons invert when clicked./li>
Version 2.5.1
  • [FIXED] Ambient sensor on iMacs now shows the correct temperature.
  • [UPDATED] Paddle framework to resolve issues with activations + misc bug fixes.
Version 2.5
  • [FIXED] Potential crash when updating drive temperatures using SMART.
  • [NEW] Added menu item for registering TG Pro during the trial.
  • [UPDATED] The Paddle framework to resolve minor issues.
Version 2.4.3
  • [NEW] Added options for SMTP port and connection type for email notifications.
  • [NEW] Filling in the email username will auto fill the server, port and connection type for most addresses.
Version 2.4.2
  • [FIXED] Issue when moving TG Pro to a different Mac that has less fans.
Version 2.4.1
  • [FIXED] Checking drive temperatures with SMART now works on more Mac models.
  • [FIXED] Potential crash while logging.
  • [FIXED] Potential crash if the fan helper app connection is invalid.
Version 2.4
  • [UPDATED] Lower CPU usage, especially when the main window is visible.
  • [FIXED] Potential crash when Auto Boost is running.
  • [FIXED] Minor memory leak.
Version 2.3.1
  • [FIXED] Crash when clearing the percent text field for an Auto Boost configuration.
  • [FIXED] Potential crash when Auto Boost was running.
Version 2.3
  • [NEW] Added ability to send crash reports directly from the app.
  • [NEW] Added OS X version and model to feedback emails.
  • [FIXED] Auto Boost can now decrease fan speeds.
Version 2.2.2
  • [FIXED] Launching on Lion (OS X 10.7)
  • [FIXED] Potential hang when sending an email notification.
  • [FIXED] Status menu fan button being on when Auto Boost is enabled.
Version 2.2.1
  • [FIXED] Issue with fan control potentially not working.
  • [FIXED] Possible crash on startup.
Version 2.2
  • [NEW] Added active GPU name to the status menu.
  • [NEW] Added ability to have email notifications. This is a great new feature for remote server monitoring.
  • [FIXED] Status menu and icon in Yosemite dark mode.
  • [FIXED] Updated diagnostics string when there is one or no fans.
  • [FIXED] Ranges of Fahrenheit converting incorrectly to Celsius.
  • [FIXED] Reduced number of console messages.
  • [UPDATED] PCI, Northbridge and GPU area icons.
Version 2.1
  • [NEW] Fan control is suspended when the Mac sleeps and restored on wake.
  • [FIXED] Manual fan control switch is turned off when fan Auto Boost is active.
  • [FIXED] Fan Auto Boost configurations changes take effect without an app restart.
  • [FIXED] Fan Auto Boost configurations are only used once editing is finished.
  • [FIXED] Fan Auto Boost algorithm works properly for low percentage values (ex: 10%).
Version 2.0.2
  • [FIXED] Manual fan control switch in the status menu updates in sync with the one in the main window.
  • [FIXED] Using every day log option on systems where the date has slashes in it.
  • [FIXED] Auto Boost sometimes not turning on when on battery power.
  • [FIXED] Prompt for launching on login was appearing every time the app started in rare cases.
Version 2.0.1
  • [FIXED] Send anonymous report preference is now working correctly.
Version 2.0
  • [NEW] Support for Mac Pro 2013 models.
  • [NEW] More sensors for almost all Mac models.
  • [NEW] Completely re-designed status menu. It now includes all temperatures and fans, plus manual controls.
  • [NEW] Completely new options for fan Auto Boost. Choose the fan percent, temperature to trigger, the type of trigger and whether it’s for plugged in or battery power.
  • [NEW] Added ability to link fan speeds when using manual control.
  • [NEW] Added ability to choose the location of the log file.
  • [NEW] Added ability to de-register a license.
  • [NEW] Added preference to adjust the gradual time for Auto Boost control.
  • [NEW] Added preference for how often a new log file is created.
  • [NEW] Added preference for global hot keys to show main window and turn manual fan control on/off.
  • [NEW] Added diagnostics to log files.
  • [UPDATED] Significantly better naming of some sensors.
  • [UPDATED] Better descriptions for common shutdown codes.
  • [UPDATED] Better numbering of sensors where there are multiple ones of the same type.
  • [UPDATED] Completely re-designed preferences UI.
  • [UPDATED] Updated sensor area icons.
  • [FIXED] Discrete GPU will now show “N/A” when it’s been turned off by the OS.
  • [FIXED] Columns no longer shift when the discrete GPU is turned on/off by the OS.
  • [FIXED] Faster app startup.
  • [FIXED] Less console noise on app startup.
  • [FIXED] Removed some duplicate sensor names.
  • [FIXED] TGFanHelper app now uses less file handles.
  • [FIXED] Clicking a notification will show the main window.
  • Version 1.8.4
  • Updated for Mac OS X 10.10 (Yosemite) compatibility.
  • Version 1.8.3
  • Resolved issue with the message in the diagnostics when the shutdown code was STOP_CAUSE_INIT_CODE.
  • Version 1.8.2
  • Resolved issue with a notification when the shutdown code was STOP_CAUSE_INIT_CODE.
  • If a bad fan is detected, an expanded name is used. Ex: “ODD” becomes “Optical Disc Drive”.
  • Less console logging when fan speeds are adjusted.
  • Version 1.8.1
  • Resolved issue where temperatures would only log as Celsius.
  • Resolved issue where HD temperatures would not be logged.
  • Updated Paddle framework.
  • Version 1.8
  • Added preference to show the main window when Auto Boost is active.
  • Fan status icon is now orange when there is an issue with a fan.
  • Version 1.7
  • Resolved potential crash on launch.
  • Resolved potential crash when checking drive temperatures.
  • Resolved issue with sensors in the LCD area.
  • Resolved issues related to showing drive temperatures in the status bar.
  • Log file is only created if logged is enabled.
  • Updated the name of the TCGc sensor.
  • Version 1.6
  • Added support for gradual fan speed increases with Auto Boost.
  • Resolved issue where the manual fan speeds would not be restored when waking from sleep or a system restart.
  • Move to Applications folder on first launch.
  • Version 1.5
  • Resolved issue with manual fan settings when waking from sleep.
  • Work around for bug in Mavericks (10.9) when showing the trial window.
  • Log file is called TG Pro Log.txt.
  • Version 1.4
  • Clearer fan Auto Boost notification text.
  • Reduced the size of the app.
  • Improved the trial and purchasing experience.
  • Version 1.3
  • Resolved crash the fan or sensor diagnostics showed an issue.
  • Improved the trial and purchasing experience.
  • Version 1.2
  • Resolved potential crash when enabling fan control.
  • Switching to Fahrenheit shows the correct temperatures in the Fan preferences.
  • Fan control sliders will properly resize when the window width is small.
  • Fan alerts can be turned off.
  • Auto updater works.
who we are
Tunabelly Software Inc. is a Canadian software development company.
contact us
what we do
Specialize in making amazing macOS, tvOS and iOS apps.