smcFanControl

This app is AWESOME! Total control of my fans, left and right side individually, who could ask for more? Three category default settings for AC power, battery, or charging, with the ability to create my own personal default profiles in each category, just amazing! The function is flawless on my MBPr 15. Now I can set it on my bare legs, and the bottom of my laptop stays cool (max speed both sides) to tepid (Med speed both sides), depending on fan sped "I CHOOSE," not Apple. Menu bar info is easy-to-read and exactly accurate.

As one who uses constantly running air purifiers in my home/work office, I know that these type of fans run for years with no issues. They are designed to run 24-7-365 and never wear out for years. I know Apple uses the same quality type fans or even superior, so I never worry about replacing fans prematurely in my MacBook. Moreover, even if I needed to in two or three years, that's a fraction in cost of replacing my SSD or multi core processors due to heat, not to mention that cooler processors run infinitely better than overheated ones. All high graphic use 3D gamers know this, I'm told.

Worked well on my 2015 Macbook Pro. My computer started getting really hot lately due to a number of programs I am running for a school project. I cleaned the fans but nothing worked to keep the temp down. I can control each fan separately and there is an ability to change the modes for higher fan speed for when I am running on batter, on log-in and when charging. Simple and well done.

Didn't work on my Mac - had to find a substitute

I love this application, but, very very sadly, it no longer works on the 2018 MacBookPro...
To the Developer, i'm sure some of us faithful users would be willing to pay for an update capable of working on the 2018+ Macs...

Great app. Solved my IMac 27 cooling problems.

At login I must enter my user code 2 times: very annoying. And the app does not control the minimum speed: only show the actual speed. I am in 2018!!!. I have an iMac, 3 years old, OSX 10.13.5

smcFanControl works well for me. Today, I have a colleague in Asia where it is hot. She has it installed and chose 'Higher RPM'. It was a bit unstable... fan runs, then not, etc. Here, I could not hear the fan. (Haven't run the app in a long, long time.) I hear no difference fan is quiet. FAQ says to choose Info & Support > Reset, then restart. Did so and relaunched smcFanControl. Now works great. I believe I have had a couple macOS upgrades since I last worked with it. Bottom Line? It works great for what we need.

Had to fix video card on my mid 2011 iMac and when I put back together the fans would go full blast. This solved the problem. Not sure why my iMac was doing this. Probably a sensor got messed up. I took it back apart and checked everything.

My SMC always asking for password after every login. after every screen lock.. How to clear that.

Use the V 1.4.8.1 on My imac 2017 i5-7600K, 3.8 GHz, with Turbo Boost up to 4.2 GHz. Use it on the boot camp windows 10 and it’s the best out there.