Originally Posted by: Mikael_Z_Guitarist_123

Are there other ways to tune your guitar aside from downloading a guitar tuning app on your gadget and buying a clamp-on tuner?

[p]Yes! Two of the oldest ways to do it are completely mechanical, require no batteries or electrical power.

Pitch pipe

https://www.guitarcenter.com/Kratt/SN10-Guitar-Pitch-Pipe-1274228071684.gc

Tuning fork

https://www.guitarcenter.com/DAddario-Planet-Waves/Tuning-fork.gc

These great old school options require you to learn pitch matching. They don't explicitly show you that you are in tune, you have to judge for yourself by the sound of the tuner & the sound of your guitar string. But they provide a reliable, external reference source for tuning.

Hope that helps!