Guitar Tuner - Simply Tune

• Free

Last verified 30 Aug 2026

• Free to download

Last verified 7 Aug 2026

4.8 102634 ratings · App Store

1. 5/5Better than others

   I was a fan of Guitar Toolkit, before it was abandoned by the developer and stopped functioning. That app cost $10, which I still consider a worthy investment considering the length of time I used the app. I downloaded GuitarTuna, and deleted it immediately when I opened it for the first time as saw it had a monthly subscription signup required to use it at all. Not cool. I would have paid a one-time fee, but a subscription doesn’t make sense for a tool that should operate standalone on my phone. This app works, and it appears to actually be free. Don’t listen to the reviewers who claim they broke a string trying to tune with this app. Definitely a user malfunction, if not trolling. As far as the aesthetics of the app, I would prefer an analog-style needle to the horizontal line guide, but it doesn’t change the function. The green box indicating “in-tune” is a bit loose, but the center line is on pitch. I recommend this app because it works as advertised within the limits of the iPhone microphone, and it’s actually free with no subscription paywall bullish¡t.

   Oskar473 · 30 Aug 2026

2. 4/5Great App!

   A great tuning app! I'm personally a beginner in electric guitar, so I have to rely solely on tabs, since I do not yet know my notes. This app contains a multitude of different tunings, which I think will be very helpful to those who want to play songs not exactly in standard tuning! I instantly think of Nirvana songs, which having tunings that range from a full step down to just a half step. This app makes it super easy to tune to these, even when you have little knowledge. For people on acoustic (or electric, it applies to both), this app is able to teach many common chords, which i think is super cool! The only issue I have with this app is that it cannot detect low strings. At all. Whenever i'm tuning my low E (standard tuning), no matter how how low i turn the dial on my guitar, it says that it's too high, sometimes glitching out before it does so. Even when I'm tuning for different tunings—for this case i'll use a full step down—it cannot detect the low(er) strings like D and G. This causes me to have to rely solely on my ears to tune my strings. Not too annoying, but it'd be way more helpful if this was fixed. Overall, this app is great! been using it since December and haven't faced any major issues!

   LiquidC0rium · 30 Aug 2026

3. 5/5It is so good

   I got the app last year and I have been using it ever since. I honestly don’t have any problems with the app. The app listens to it so nicely, and I even got my guitar teacher to check if it was tuned and IT WAS!!! I love it so much, if you are deciding to download the app do so. Tbh I had my doubts and thought that it wasn’t listening or just didn’t tune it right, but I was shocked that the app was made so nicely. Thank you Simply Tuner for making Tuning much easier. 🙏 I have no need to try to learn the cords because I have classes but if you do there are tons of other Reviews to read from. Hopefully you find what you are looking for..

   😎😚✌️ · 30 Aug 2026

4. 3/5It’s a little overly complicated.

   For free, of course I expect some catch, and there were some basic questions and it took some time to get to the tuner. When I did, it was set to a guided tuning mode or something but it wanted me to start at the high strings, which is not the way to go, but touching the corresponding tuning peg on screen sets it to the right string. Next it is a little too fast to move to the next string. I like that it plays a pitch for each string, but it moves to the next string immediately as soon as it reads the note in tune; which means if you overshoot then it’s moving on to the next pitch while the previous isn’t quite there yet. It often takes a few tries to get there, so it should need the note to be in pitch for at least a few seconds, before jumping to the next. Otherwise if you refuse to pay for a tuner, this is a fine option, but a $50 pedal tuner will be much more convenient. The burst of notifications asking for a review immediately upon starting tuning is also not appreciated.

   ishsisosbwoa · 30 Aug 2026

5. 3/5My opinion

   I have learned more on the app Gibson than I do here. I have to pay an exorbitant amount of money just to learn and few small things. They teach you the wrong thing at the wrong time.I feel like the lessons are too hard for the mid part of you journey when first trying the app out. I did not look forward to playing my guitar the only thing that kept me going was the fact that I was gonna be able to get an electric guitar if I played my acoustic one. I’m not saying that I hate this app. There are some really good features about this app like the encouragement the teachers give you along the way. Or the easy navigation and the somewhat simple like terms they use instead of big words. I colors make it seem a lot more vibrant and happy than some others. Over all I’m the biggest fan because of the bad timing for teaching certain things, but also this is my opinion.

   BAKA!!123 · 30 Aug 2026

4.8 39022 ratings · Google Play

No store reviews collected for Google Play · US

Privacy

Accessibility

No accessibility labels collected yet.

Privacy

• Data collected — Analytics — Device or other IDs Developer declared
• Data collected — App functionality — App activity — App interactions Developer declared
• Data collected — App functionality — Audio — Voice or sound recordings Developer declared
• Data collected — App functionality, Analytics — App info and performance — Crash logs Developer declared
• Data collected — App functionality, Analytics — App info and performance — Diagnostics Developer declared
• Security practices — The developer doesn’t provide a way for you to request that your data be deleted — Data can’t be deleted Developer declared
• Security practices — Your data is transferred over a secure connection — Data is encrypted in transit Developer declared

Accessibility

No accessibility labels collected yet.

• 1.5.6 · 8 Jul 2026