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Yes! You will purchase the same Fret Zealot and install it in the same method as our right-handed players! The “spine” of Fret Zealot will be on the bottom (ground side) of the neck for left-handed guitars. On the app, go to the Settings section (gear in the top right corner) and choose “left handed” to make sure the lights are correct! This means you can use one Fret Zealot and seamlessly switch between right and left-handed players! 

Yes! We show a lot of electric guitar action in the videos, but Fret Zealot works on all full size guitars. Check the scale length of your guitar make/model, and if it’s between 24.75″ and 25.6″, there’s a Fret Zealot that will fit your guitar! If you’re unsure about the sizing/application, simply send us an email and we’ll help you figure out which size to purchase and how to install your Fret Zealot! 

Please note, there are certain wide-neck classical guitars that Fret Zealot will not work perfectly on. While you’ll be able to install Fret Zealot, the lights will not line up exactly underneath each string, so some players may find this confusing. We’ve had other classical guitar players that continue to use Fret Zealot without issue! 

Nope! The adhesive we use is removable (similar to how sticky notes work) and will not damage your guitar should you decide to remove Fret Zealot at some point.

You can remove Fret Zealot from your guitar (see FAQ 3 above!), but you cannot re-apply Fret Zealot on another guitar. Fret Zealot is a one-time installation only due to the adhesive’s properties and to ensure that Fret Zealot doesn’t ever lift up at the corners (a seemingly small, but very important consideration).

Some people have re-applied a Fret Zealot with double-sided adhesive tapes. The hold won’t be as good, and we wouldn’t recommend this as a strategy because the edges of Fret Zealot likely won’t hold as well.

If you want Fret Zealot for two of your guitars and already have a battery pack, you can purchase the LED strip portion here.

Yes! You just need a full size guitar (i.e. not a “junior” guitar). Fret Zealot was designed to be compatible with all mass market normal guitars. The two most common scale lengths are 24.75” (e.g. Gibson) and 25.5” (e.g. Fender). Fret Zealot is manufactured to fit both of these sizes and anywhere in-between. On the smallest scale lengths, the LED strip is situated directly/flush behind the fret, whereas with the slightly larger scale-lengths, there is a small gap in the higher frets, but the LED indication is still very clear and intuitive.

Please note, there are certain wide-neck classical guitars that Fret Zealot will not work perfectly on. While you’ll be able to install Fret Zealot, the lights will not line up exactly underneath each string, so some players may find this confusing. We’ve had other classical guitar players continue to use Fret Zealot without issue! 

Necks with a nut width below 2″ work best. Super wide necks like those on some classical acoustic guitars will not work well with Fret Zealot for guitar.

Chords, scales, and tuning are super easy and the app will have anything you can possibly want to play. If it’s somehow missing, let us know (email [email protected]) and we’ll push an update immediately! We’re even making the chords and scales automatically update according to any custom tuning you set up on your guitar. Imagine how cool that’s going to be! The new scales on the specific tuning will be displayed instantly instead of you having to transpose or look them up.

You can also upload your own songs (in Midi or Guitar Pro 3/4/5 format ) here. You can rate each tab so that you and other users can find the best tabs for various songs. We guarantee you will not feel limited by the selection of songs in the app :-).
Watch our tutorial of the upload process here.

Fret Zealot Song Upload Link

(To upload songs to your private library, please login here and then navigate to ‘Upload Song’)

If you have GPX files, you can use TuxGuitar to convert them to a compatible format.

Fret Zealot does not need to be paired with a device in the traditional sense, so we recommend connecting to the Fret Zealot directly from the App, instead of through the System Settings.

Since you have already paired the Fret Zealot via System Settings:

  • Go into System Settings → Bluetooth, Select ‘Fret Zealot’ and ‘Forget’.
  • Disable / Enable Bluetooth in the System Settings.
  • Open your Fret Zealot app, select Scan, and your Fret Zealot should show up ready to connect!

If you still can’t see the Fret Zealot in the App, try verifying the ‘Location’ permission is granted:

  • Go into System Settings → Apps & Notifications –> Fret Zealot
  • Toggle “Location” permission, which is used to connect to Bluetooth devices.

Make sure you’ve charged your battery module for a few hours. Are the connectors plugged in completely? Try unplugging them and re-plugging. If none of that works, please email [email protected] and we’ll help you out!

Please email [email protected] or fill out the contact form here. We usually respond within 24 – 48 hours!

One year from date of purchase for any manufacturing defects.

Android: Fret Zealot will work on devices running Android 6.0 or newer, and which support Bluetooth 4.0 Low Energy (BLE). If unsure, GSMArena is a great resource for finding device details.

iOS: Every iOS device since iPhone 5 is supported by Fret Zealot and running iOS 10 or newer.

To ensure that any personal identifying information (PII) that Fret Zealot is removed with your request, please send an email with the subject “Close My Account” to [email protected] including the account email, and an Administrator will service your request and provide confirmation within one business day.

Subscribed users can view their subscription status from:
In case this page is not available, you may manage subscription status directly will billing partner here:

Not sure which size to get?

Fret Zealot Sizing Guide

Looking for tips on how to install Fret Zealot?