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A–440: Pro Tuner Tuning Fork

A–440: Pro Tuner Tuning Fork

for musicians with ears

184 ratings
22 reviews
🔧 Utilities
🎵 Music
Free
In-App Purchases

Details

  • Released
  • Updated
  • October 23, 2010
  • July 16, 2026

Features

Developer

Paul Richardson
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About

Easily generate a tuning tone with a single tap. Enhance convenience by setting up Siri Shortcuts for quick access, even adding them to your Home Screen or widgets. Adjust the frequency to your needs and enjoy a fuss-free tuning experience.

✓Single-tap tone generation
✓Adjustable frequency (435–445 Hz)
✓Siri Shortcut integration
✓Home Screen and widget shortcuts
✓iPad Slide Over compatibility
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What's New in A

2.6.2

July 16, 2026

NEW: - Localization en-GB - Haptic feedback - Privacy manifest

More
2

In-App Purchases

$4.99

A–440 Premium

The full range of benefits.

User reviews

Most RecentHighest RatedLowest Rated

DDobler

Works quite well
D DoblerD Dobler

The Lost Art Of Tuning By Ear

Using tuner pedals for decades severely impaired my ability to tune by ear. But this great little app on my phone has brought it back up to snuff. Plus I now always have tuner in my pocket!
VWorks userVWorks user

Response from developer

Hallo VWorks user, thanks for your feedback. It's great to hear that another pair of ears have been happily returned to service.

Good for a while

Stopped working, right in the middle of a church service when I needed it. Nice while it lasted.
Chilean Angry bird loverChilean Angry bird lover

Response from developer

Hi Chilean Angry bird lover, thanks for your feedback. If you can explain what 'Stopped working' means exactly, we may be able to do something to help.

Developer email fails

Developer email fails. Therefore there is no support for this app.
OnlyMyRatings 72OnlyMyRatings 72

Response from developer

Thanks for your feedback. This issue has been fixed in version 2.5.6

Not actually free

Stop doing this people
cmcgeemancmcgeeman

Response from developer

Hallo cmcgeeman, thank you for your feedback.

See 17 more reviews

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FAQ

What does the A–440 Tuning Fork app do?

This app generates a pure tone at a specific frequency, primarily used for tuning musical instruments. It offers a simple interface with a single tap to produce the sound and allows for adjustable frequencies.

How can I access the tuning tone quickly?

The app allows you to set up Siri Shortcuts, which can be added to your Home Screen, Dock, or the Shortcuts Widget. This enables you to start and stop the tone without needing to open the app directly.

Is the A–440 Tuning Fork app free to use?

The app offers a 14-day trial which is activated via a no-cost purchase in the App Store. After the trial, the app will be disabled until a license is purchased.

What devices is this app compatible with?

The app is designed for mobile devices and is noted to be useful with iPad's Slide Over feature. It leverages Siri Shortcuts, indicating compatibility with iOS devices that support this functionality.

Can I tune to frequencies other than A–440?

Yes, the frequency is adjustable within a range of 435–445 Hz. This allows you to tune to A–440 as well as other common tuning pitches like A–443.