# 432 & 528 Tuner — Tune to 432Hz and 528Hz

> Musical instrument tuner for 432Hz, 528Hz, and 440Hz frequencies. (iPhone/iPad app by Ophir Paz.)

- Source: https://appshunter.io/ios/app/432-and-528-tuner/id807438648 (this page in markdown: same URL + `.md`)
- Developer: [Ophir Paz](https://appshunter.io/developer/633600719)
- Category: Music
- Price: $5.99
- Rating: 3.50/5 from 85 App Store ratings · 87 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 1 MB
- Languages: American English
- Released: 2014-02-04
- Data updated: 2026-08-29
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/432-and-528-tuner/id807438648/reviews.md

## What is 432 & 528 Tuner?

Introducing the 432 Tuner, an app designed to assist you in tuning your musical instrument to the A=432hz tuning, as well as A=444Hz (C5=528Hz) and the Standard 440Hz. With this tool, tuning to A=432hz has never been easier.

The 432 Tuner also offers the ability to tune to A=444hz, which uses the 528hz scale, as well as the Standard A=440hz.

Although our initial goal was to keep our inventions free of charge, we have come to the realization that we need to sustain ourselves while continuing to develop new and existing projects.

All of our creations are made from the heart, with a focus on Love, Light, and Meditation.

## Key features

- Tune to 432Hz
- Tune to 528Hz (444Hz scale)
- Tune to standard 440Hz
- Easy instrument tuning

## What do users think of 432 & 528 Tuner?

Overall sentiment: mixed

**Pros**

- 👍 Works as a tuner
- 💡 Offers alternative frequencies (432Hz, 528Hz)
- 👍 Intuitive and easy to use
- 👍 Accurate tuning
- 👍 Good for tuning ukuleles
- 👍 Works well for guitar
- 👍 Useful for recording
- 👍 Free (mentioned by one user)
- 👍 Good layout and easy to read
- 👍 Sensitive enough for fine tuning
- 👍 Works with 12-string guitars
- 👍 Can be used as a voice tuner

**Cons**

- 🐛 Inaccurate input/sound detection
- 🐛 Jumpy and unstable readings
- 🐛 Not working on newer iPhones (iPhone 11, XS)
- 🐛 Interface changed after update
- 🐛 App doesn't work at all for some users
- 🐛 Microphone function not working
- 🐛 App is just a picture/doesn't tune
- 🐛 Waste of money/rip-off
- 🐛 Poor performance after updates
- 🐛 Overly sensitive
- 🐛 Requires quiet environment
- 🐛 Not precise, picks up ambient noise
- 🐛 Incompatible with older iOS versions (iOS 8x, 13.2)

**Commonly reported bugs**

- Update changed format, app doesn't keep tune
- Not as responsive or accurate after recent update
- Doesn't work with iPhone XS
- Interface is different (compass-like)
- Bug fix works brilliantly (implies previous bugs)
- Bugs fixed, works great now (implies previous bugs)
- Microphone function doesn't work
- Input not accurate
- App doesn't detect anything on iPhone 11
- Hasn't been picking up sound since last update
- App doesn't register sound on iPhone 11 Pro
- Does not work on iPhone 11
- Microphone not working
- App has not worked since the update
- Wheel is black, too sensitive, doesn't stop for readings
- App doesn't show tuning frequencies
- App not compatible with iOS 8x upgrades
- App not compatible with iOS 8
- App not compatible with iOS 13.2
- App jumps all over the place, impossible to get it to stay green
- App is jumpy and unstable
- App is twitchy and fine tuning requires stable reading
- App is too sensitive
- App doesn't pick up sound on iPhone 11
- App doesn't work on iPhone 11
- App doesn't work on iPhone 11 Pro
- App doesn't work on iPhone XS
- App doesn't work on iOS 13.2
- App doesn't work on iOS 8
- App doesn't work on iOS 8x

**Most requested features**

- Update app for compatibility with newer iPhones
- Make app downloadable to phone directly (not just through App Store)
- Add tone generator
- Allow settings to be frozen, not revert to default
- More in-depth instructions on use

## Recent user reviews (10 of 87)

All indexed reviews: https://appshunter.io/ios/app/432-and-528-tuner/id807438648/reviews.md

### 4/5 — Sharps changed to Flats?

*2025-04-12*

Yesterday I went to tune my guitar and noticed for example that A# is now called Bb and so on. I welcome this change but somehow this appears to have been done without an actual App Store update. Wish I knew in advance because I didn’t notice the change until after I broke a string while tuning lol!

### 1/5 — SCAM ALERT

*2024-06-09*

It doesn’t look like it but as soon as you downloaded it it charges you $9.99

### 1/5 — Don’t buy it

*2024-03-27, version 5.0.0*

Crappy! Period no exclamation point!!!

### 5/5 — Excellent

*2023-10-15*

Perfect for when I’m not in reach of a tuner, out and about where there’s a guitar around

### 2/5 — リニューアル後　性能が酷くなってしまった

*2023-06-15*

リニューアル後、3回か4回弦を弾いて
その弦をまともに認識出来なくなってしまってます。

早期の改善を求めます。

よろしくお願いします。

### 1/5 — Update Ruined the App

*2023-05-04, version 5.0.0*

I don’t know why they did this, but their update changed the format and now it doesn’t keep any tune. They killed the app and I paid money for it. Unfortunate

### 3/5 — Better before the update

*2023-05-01*

Love that you added 528hz but it’s not as responsive or accurate than it was before the recent update. Slightly disappointed.

### 5/5 — Great app!

*2023-03-27*

I’ve been using this app for a while especially to tune up my ukuleles for recording and the finished tracks always sound cleaner and much warmer when recorded at 432 rather. than in 440hz. 
The 528hz tuning sounds much brighter with more clarity and tends to fit much better with vocal tracks too! 
Is there any way the app can be downloaded to the phone so I don’t have to keep returning to the App Store to open it?

### 1/5 — Waste of money. Doesn’t work properly

*2021-03-30*

Doesn’t even tune correctly. I’d like my money back. I’d have been better off buying some lunch! Rip off.

### 5/5 — App works

*2021-01-14*

432 is better for you

## Frequently asked questions about 432 & 528 Tuner

### What does the 432 & 528 Tuner app do?

This app allows you to tune your musical instrument to specific frequencies. You can select between A=432Hz, A=444Hz which utilizes the 528Hz scale, and the standard A=440Hz tuning.

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

The primary features include the ability to tune to A=432Hz, A=444Hz (528Hz scale), and the standard A=440Hz. It is designed to make tuning to these frequencies straightforward.

### Is this app free to use?

Yes, the app is currently offered for free. The developers initially aimed to provide their creations at no cost and continue to offer this tuning tool without charge.

### Who is this app designed for?

This app is intended for musicians and individuals who wish to tune their instruments to specific frequencies, particularly A=432Hz and the 528Hz scale, or the standard A=440Hz.

## Version history (last 5 releases)

### 5.0.0 — 2023-04-24

New View
More Stable Tuning Experience
More Accurate Tuning Ability

### 4.3 — 2020-09-03

Bug Fixes
Should work fine on IPhone 11 Pro now

### 4.1 — 2020-02-02

Bug fixes

### 4.0 — 2019-10-21

- Upgraded the whole Tuner
- Less bounces around
- Clean View and Design

### 3.0 — 2017-05-16

* Bug fixes
* Tune to the 528hz (A=444hz)
* Tune to the standard A=440hz

## Apps similar to 432 & 528 Tuner

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Pro Guitar Tuner](https://appshunter.io/ios/app/pro-guitar-tuner/id687934254) | 4.7 (10,132) | Free | Music |
| [ChordBank: Learn Guitar Chords](https://appshunter.io/ios/app/chordbank-learn-guitar-chords/id397602509) | 4.7 (6,277) | Free | Music |
| [Tuner Lite by Piascore](https://appshunter.io/ios/app/tuner-lite-by-piascore/id635828559) | 4.5 (9,949) | Free | Music |
| [Guitar Tuner - Ukulele & Bass](https://appshunter.io/ios/app/guitar-tuner-ukulele-and-bass/id662890455) | 4.4 (7,464) | Free | Music |
| [n-Track Tuner](https://appshunter.io/ios/app/n-track-tuner/id409786458) | 4.7 (3,166) | Free | Music |
| [Metronome+](https://appshunter.io/ios/app/metronome-plus/id434136233) | 4.5 (1,199) | Free | Music |

## More apps by Ophir Paz

- [432 Player](https://appshunter.io/ios/app/432-player/id633600716)
- [Dreamworld - Music Album](https://appshunter.io/ios/app/dreamworld-music-album/id765054887)
- [Says Φ](https://appshunter.io/ios/app/says/id860252168)
- [Medidate - Book Studio Classes](https://appshunter.io/ios/app/medidate-book-studio-classes/id1082464022)
- [528 Player](https://appshunter.io/ios/app/528-player/id1317604903)

All apps by Ophir Paz: https://appshunter.io/developer/633600719

## Related topics

[528 hz tuner](https://appshunter.io/ios/topics/528-hz-tuner) · [432 tuner](https://appshunter.io/ios/topics/432-tuner) · [432 hz tuner](https://appshunter.io/ios/topics/432-hz-tuner) · [528 player plus](https://appshunter.io/ios/topics/528-player-plus)

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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 2026-08-29.*