# Tuner!!

> Accurate visual chromatic tuner for musical instruments with cent-level precision. (iPhone/iPad app by Peter Deelstra.)

- Source: https://appshunter.io/ios/app/tuner/id469313616 (this page in markdown: same URL + `.md`)
- Developer: [Peter Deelstra](https://appshunter.io/developer/400038854)
- Category: Music, Utilities
- Price: $0.99
- Rating: 4.40/5 from 8 App Store ratings · 50 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 4 MB
- Languages: American English
- Released: 2011-10-06
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/tuner/id469313616/reviews.md

## What is Tuner!!?

An easy-to-use accurate visual chromatic tuner for your instruments.  Best for higher pitch instruments such as the violin, flute, clarinet, trumpet, or oboe, but will also work well using the harmonic frequencies of lower pitch instruments too.

Provides a simple interface to visually check whether the pitch for a note is low or high, and lets you "see" the pitch change as you make adjustments. Tuning has never been easier. 

Shows exactly how many cents (1/100ths of a semitone) a note is out-of-tune.  This app listens to your instrument.  It does NOT play a tone.

- Developed in Austin, Texas, the "Live Music Capital of the World". 
- Extremely accurate - within 1 cent (1/100th of a semitone) of each note with sub-second response time. 
- Supports transposed tunings for instruments in the key of E-flat, F, B-flat and A 
- 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)
- Doesn't directly pickup fundamental frequencies below 120 Hz (B2) because of iOS device hardware limitations, but will pickup the harmonic frequencies which will tune more accurately.
- Great for the violin, flute, clarinet, trumpet, or oboe.

## Key features

- Visual chromatic tuning
- Accurate to within 1 cent
- Sub-second response time
- Supports transposed tunings
- Adjustable pitch reference
- Harmonic frequency detection

## Recent user reviews (10 of 50)

All indexed reviews: https://appshunter.io/ios/app/tuner/id469313616/reviews.md

### 3/5 — Eh

*2020-02-26, version 1.6*

Was ok when b4. Upgraded phone didn’t get upgraded app and now everything is $$. Sadly disappointed:/

### 4/5 — Rick

*2016-12-23, version 1.6*

Great app!

### 5/5 — 10/10 would tune again

*2016-01-04, version 1.5*

I love this tool. I had a guitar tuner but I use this instead. Faster and easier.

### 5/5 — Great Tuner!

*2015-03-20, version 1.5*

I'm a pro and this tuner is great for showing all the important values needed for tuning in a innovative design. I Love it for all the info it displays. It's a beautiful looking design too. It's my favorite non-strobe tuner.

### 4/5 — New and different

*2014-11-25, version 1.5*

Great little product.  The pitch analysis seems dampened or buffered so that the needle isn't twitching all over the place like most other products.  Instead the harmonics are displayed graphically, rather than the wheel or needle chasing harmonics instead of the primary note. I love this thing and use it mostly for my Cello.

### 4/5 — Works surprisingly well!

*2014-10-05, version 1.5*

The only reason I left a star out is because I think that it could be greatly improved if the note you were we're playing was shown on a stave. If you could do that I would be very grateful, thank you for a great app!

### 3/5 — Nope

*2014-10-03, version 1.5*

I downloaded it and it didn't work I call to delete or or don't get it I give it a 3 star

### 5/5 — Amazing

*2014-08-22, version 1.5*

I absolutely love this app! It's very helpful and it's so cheap!

### 5/5 — Simple, easy to use, and wonderful!

*2014-01-22, version 1.5*

Great little tuner. It is very simple and easy to use and it really helps!

### 5/5 — Great for checking the tuning of Native American flutes

*2013-11-14, version 1.5*

This has been a great app to use to check the tuning of Native American flutes, I checked all the flutes in my collection and they all matched their tunings they were marked with.

## Frequently asked questions about Tuner!!

### What does this app do?

This app provides an accurate visual chromatic tuner for musical instruments. It helps you see if your instrument's pitch is too high or too low, and how far off it is in cents (1/100ths of a semitone). It's designed for easy adjustments and precise tuning.

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

Key features include extremely accurate tuning within 1 cent with sub-second response, support for transposed tunings (E-flat, F, B-flat, A), and the ability to adjust the pitch reference from 400 to 480 Hz. It visually displays pitch changes as you tune.

### Is this app free to use?

Yes, the application is free to use. There are no in-app purchases or advertisements mentioned, suggesting a completely free experience for users.

### What instruments is this app best suited for?

This app is best for higher pitch instruments such as the violin, flute, clarinet, trumpet, or oboe. It can also work well for lower pitch instruments by picking up their harmonic frequencies.

### How does the app measure tuning accuracy?

The app measures tuning accuracy in cents, which are 1/100ths of a semitone. It displays exactly how many cents a note is out-of-tune, allowing for very precise adjustments to achieve perfect pitch.

## Version history (last 5 releases)

### 1.6 — 2016-11-04

This app has been updated by Apple to display the Apple Watch app icon.

iOS 10 Support

### 1.5 — 2012-01-19

Fixed key of A and B♭ mix-up on iPad and added key D and G.

### 1.4 — 2011-12-07

Fixed bug where app gets stuck on settings screen in iOS 5

### 1.3 — 2011-12-02

Transposed tuning for instruments in the keys of D and G

### 1.2 — 2011-10-13

Added accuracy scale.
Recalls settings.

## Apps similar to Tuner!!

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [A–440: Pro Tuner Tuning Fork](https://appshunter.io/ios/app/a440-pro-tuner-tuning-fork/id335593282) | 4.4 (184) | Free | Music |
| [Precise Strobe Tuner:StroboPro](https://appshunter.io/ios/app/precise-strobe-tunerstrobopro/id6455632707) | 4.8 (63) | Free | Music |
| [Greenwich Sentinel](https://appshunter.io/ios/app/greenwich-sentinel/id1551403123) | 4.3 (6) | Free | Music |
| [Touch Tuner](https://appshunter.io/ios/app/touch-tuner/id714823553) | 4.1 (7) | $0.99 | Music |
| [Mini Piano Pro](https://appshunter.io/ios/app/mini-piano-pro/id1628299461) | 4.9 (28) | $1.99 | Music |
| [Flute Tuner - LikeTones](https://appshunter.io/ios/app/flute-tuner-liketones/id6470743443) | 4.9 (784) | Free | Music |

## More apps by Peter Deelstra

- [Guitar Tuner!](https://appshunter.io/ios/app/guitar-tuner/id400038851)
- [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

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*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 2026-06-10.*