# Guitar Tuner!

> Accurate audio-visual guitar tuner with standard and alternate tuning support. (iPhone/iPad app by Peter Deelstra.)

- Source: https://appshunter.io/ios/app/guitar-tuner/id400038851 (this page in markdown: same URL + `.md`)
- Developer: [Peter Deelstra](https://appshunter.io/developer/400038854)
- Category: Music, Utilities
- Price: $2.99
- Rating: 4.80/5 from 355 App Store ratings · 246 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 13 MB
- Languages: American English
- Released: 2010-11-02
- Data updated: 2026-09-03
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/guitar-tuner/id400038851/reviews.md

## What is Guitar Tuner!?

An easy-to-use accurate audio/visual tuner for your guitar.  

Provides a simple interface to visually check whether the pitch for each string is low or high, and lets you "see" the pitch change as you wind/unwind the string tuning machines.  Tuning has never been easier.

Shows exactly how many cents (1/100ths of a semitone) a note is out-of-tune.

- Extremely accurate - within 1 cent (1/100th of a semitone) of each note with sub-second response time.
- Developed in Austin, Texas, the "Live Music Capital of the World".
- Use the standard tuning E-A-D-G-B-E or one of many alternate tunings: regular tunings such as Minor Third, special tunings such Drop D, open tunings such Open C, lower tunings, higher tunings.
- Adjust pitch incrementally from 400 to 480 Hz or up/down a half/full step from A440. (The International Organization for Standardization specifies the frequency for the note A in the treble stave as 440 Hz.  ISO 16:1975).
- Tap to hear an accurate note if tuning by ear instead of using visual tuning.
- Enable/disable Auto-string-detect (not recommended for noisy environments).

## Key features

- Accurate audio/visual tuning
- Visual pitch change indicator
- Cent-level accuracy (within 1 cent)
- Supports standard and alternate tunings
- Adjustable pitch reference (400-480 Hz)
- Tap to hear reference notes
- Auto-string-detect option

## What do users think of Guitar Tuner!?

Overall sentiment: positive

**Pros**

- 👍 Easy to use
- 🚀 Quick way to check tuning
- 🎨 Excellent design and performance
- 💯 Accurate and precise
- 🎸 Works great for guitars and other instruments
- 🔍 Helpful visual feedback
- 📚 Lots of tuning options and settings

**Cons**

- 🐛 Occasionally stops working or freezes
- 🔊 Struggles to pick up certain strings (e.g. low E)
- 📱 Compatibility issues with newer devices

**Commonly reported bugs**

- Microphone not recognized after iOS 13 update
- App crashes or freezes on some devices

**Most requested features**

- Add more alternate tuning options
- Implement auto-detect string feature
- Improve battery life optimization

## Recent user reviews (10 of 246)

All indexed reviews: https://appshunter.io/ios/app/guitar-tuner/id400038851/reviews.md

### 5/5 — 10 years+ later, still amazing

*2026-02-01*

Great app, thanks for all you do. I just learned about open tuning and of course this app supports that. I also just learned about playing 415hz, which this app supported me in learning more about and tuning into these different ways to play. Thanks for keeping it going.

### 5/5 — Great app

*2025-10-10*

Quick way to check tuning I use it to check trombone intonation also guitar

### 5/5 — Very useful

*2025-09-13, version 2.4*

The excellent design and performance of this app makes using it transparent.

### 1/5 — Tunes Sharp

*2025-02-05, version 2.4*

I went back to a headstock tuner— way more accurate.

### 5/5 — Great app!👍

*2024-07-31, version 2.4*

Outstanding tuner. I would recommend it to any Guitarist 👍

### 5/5 — All you need

*2024-04-10*

Love it! Pay $2.99 and be done with it. No annoying ad videos or pricey monthly subscriptions. This is all the guitar tuner you need.

### 1/5 — GuiTune

*2024-03-11*

Why has this app stopped working for tuning my guitar. - used tobe brilliant  - now won’t work at all  on my  iPhone SE 20  - has it been updated to something else ?

### 5/5 — So worth a few bucks

*2023-09-06*

Way, way better than the alternatives, especially with respect to alternate tunings but even just for getting standard dialed to within a cent or two

### 5/5 — Good App With One Flaw

*2021-10-06*

This is a very good app but if you don’t remove it from memory after you done using it, it will drain your battery.

### 5/5 — GREAT TOOL

*2021-09-26, version 2.4*

Appreciate the app.  Always tuned by ear, but getting older and tuning abilities a little off 😊. This is perfect for me!

## Frequently asked questions about Guitar Tuner!

### What does this guitar tuner app do?

This app provides an accurate audio and visual tuner for your guitar. It features a simple interface to visually check if a string's pitch is too high or low, allowing you to see pitch changes as you adjust the tuning machines. It also shows the exact deviation in cents.

### What are the key features of this guitar tuner?

Key features include extreme accuracy within 1 cent with sub-second response, support for standard tuning (E-A-D-G-B-E) and numerous alternate tunings like Drop D and Open C. It also allows for adjustable pitch reference from 400 to 480 Hz and a tap-to-hear function for tuning by ear.

### Is this guitar tuner app free to use?

Yes, this guitar tuner app is completely free to use. The provided data indicates no in-app purchases or advertisements, suggesting a free monetization model.

### What tunings does the app support?

The app supports the standard guitar tuning E-A-D-G-B-E. Additionally, it offers a wide variety of alternate tunings, including regular tunings like Minor Third, special tunings such as Drop D, and open tunings like Open C, as well as lower and higher tunings.

### How accurate is the tuner?

The tuner is extremely accurate, achieving within 1 cent (1/100th of a semitone) of each note with a sub-second response time. This high level of precision ensures precise tuning for your guitar.

## Version history (last 5 releases)

### 2.4 — 2017-12-11

This update from Apple will improve the functionality of this app. No new features are included.

Bug fix for temporary freezing when note played on iOS 11

### 2.3 — 2016-11-04

iOS 10 support and bug fixes.

### 2.2 — 2016-11-03

Updates for iOS 10.

### 2.1 — 2013-11-07

Message for disabled microphone.

I love your feedback.  Please send any suggestions or questions to peterdeelstraapps+guitartuner@gmail.com

### 2.0 — 2013-10-23

- Update for iOS 7
- Additional tuners
- Remembers settings
- iPhone 5/5S/5C screen size support
- Faster performance

## Apps similar to Guitar Tuner!

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Tuner by Piascore](https://appshunter.io/ios/app/tuner-by-piascore/id635644097) | 4.8 (1,447) | $4.99 | Music |
| [Guitar Scales Power](https://appshunter.io/ios/app/guitar-scales-power/id589291541) | 4.6 (77) | Free | Music |
| [Acoustic Tuner](https://appshunter.io/ios/app/acoustic-tuner/id1413511646) | 3.9 (290) | Free | Music |
| [Guitar Tuner＋](https://appshunter.io/ios/app/guitar-tuner/id1553432239) | 4.7 (1,876) | Free | Music |
| [Tempo - Metronome with Setlist](https://appshunter.io/ios/app/tempo-metronome-with-setlist/id304731501) | 4.8 (4,759) | $2.99 | Music |
| [Acoustic Guitar Tuner Basic](https://appshunter.io/ios/app/acoustic-guitar-tuner-basic/id588151563) | 4.6 (563) | Free | Music |

## More apps by Peter Deelstra

- [Tuner!!](https://appshunter.io/ios/app/tuner/id469313616)
- [Tone Generator!](https://appshunter.io/ios/app/tone-generator/id479273838)
- [Metronome!!](https://appshunter.io/ios/app/metronome/id486275329)

All apps by Peter Deelstra: https://appshunter.io/developer/400038854

## Related topics

[peter deelstra](https://appshunter.io/ios/topics/peter-deelstra) · [my pocket guitar tuner](https://appshunter.io/ios/topics/my-pocket-guitar-tuner) · [guitar tuner liketones](https://appshunter.io/ios/topics/guitar-tuner-liketones) · [classical guitar tuner pro](https://appshunter.io/ios/topics/classical-guitar-tuner-pro) · [432hz guitar tuner](https://appshunter.io/ios/topics/432hz-guitar-tuner) · [guitar tuner spanish](https://appshunter.io/ios/topics/guitar-tuner-spanish) · [classical guitar tuner basic](https://appshunter.io/ios/topics/classical-guitar-tuner-basic) · [tuner app for guitar](https://appshunter.io/ios/topics/tuner-app-for-guitar) · [guitar tuner free classical](https://appshunter.io/ios/topics/guitar-tuner-free-classical) · [my tune guitar](https://appshunter.io/ios/topics/my-tune-guitar) · [guitar tuner easy tune chords](https://appshunter.io/ios/topics/guitar-tuner-easy-tune-chords) · [yamaha guitar tuner free](https://appshunter.io/ios/topics/yamaha-guitar-tuner-free) · [learn guitar tuner](https://appshunter.io/ios/topics/learn-guitar-tuner) · [app guitar tune](https://appshunter.io/ios/topics/app-guitar-tune)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*