Pitch calibration upgrades and European tour: Teüna 1.3

iPhone 3.5-Inch Screenshot 1

New settings pane includes keyboard input for concert pitch

Teüna 1.3 is available on the App Store now. The concert pitch wheel is now a “spiral” — as you rotate it with the plus/minus buttons it just keeps going. It’s now adjustable from 220 – 880 Hz (a full octave below or above 440 Hz) and with keyboard input on the Settings pane, allows fractional settings like 440.5 Hz.


Teüna help screen for the Swedish iTunes App Store

Localization also continues with Chinese (Traditional) and twelve European languages that use Latin script: Croatian, Czech, Danish, Dutch, Estonian, Finnish, Hungarian, Norwegian, Polish, Romanian, Slovak, and Swedish. Music teacher Kaisa Nõges deserves special thanks for help with the Estonian translation.

Thanks again for using Teüna! Please help support ongoing development by sharing it with your friends, especially music teachers for whom I’m offering it for free, and consider leaving a positive review on the iTunes store. Your voice will really help.

Special thanks also to French music teacher Nicolas OLIVIER who blogged about Teüna last month and made some simple Vine animations showing it in action.

Transposing and translating: Teüna 1.2

Teüna 1.2 is available today on the App Store, including a transposing feature requested by a French horn player named Aimee. Thanks again for writing, Aimee! I hope players of wind instruments will enjoy using my chromatic tuner app for intonation practice as much as string players do.


The other big news in this release is support for Chinese, German, Portuguese, Italian, and French languages. With English, Japanese and Spanish that makes 8 languages so far.

I will continue adding languages where I see interest, so please email me if you’d like to see Teüna in another language. I know very few people who don’t speak primarily English! So I will need your help.

And as always, if you enjoy Teüna please rate and review it on the App Store. Each new version and language has its own ratings and they are very important for visibility to new users.

Teüna begins internationalization with 1.1.1 release

Teüna has always been designed to be international, with simple controls on the main screen, but today update 1.1.1 adds the ability to change to one of four international notation schemes.


3.5in help jp

Good design is humane and obvious, so it has to speak the user’s native language. I have started internationalizing Teüna’s user interface and App Store page with two languages I studied in school, Japanese and Spanish. I hope to add more languages soon.

I hope Teüna finds more happy users around the world. As always, if you enjoy Teüna please take the time to rate and review it on the App Store. It helps other users find it and that helps me to keep developing it!

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Announcing Teüna

An elegant chromatic tuner for iPhone, iPad, and iPod Touch

Teüna running on an iPhone 5

After months of late night work I’m thrilled to announce Teüna, my first iOS app. Teüna is a chromatic tuner, for tuning any musical instrument or voice.

It’s useful for tuning the instrument right out of the case or for setting on your music stand to give you visual feedback on your intonation while you practice or play.

While there are many tuners available on the App Store, I’ve tried hard to make Teüna excel in three dimensions:


Inspired by the pocket watches of the 17th century, this is a tuner Bach or Mozart wouldn’t mind carrying. I’ve sought elegance and the feel of beautiful live tones–the colored background responds to tones instantly.


Almost every tuner I’ve ever used are more accurate than my ears, but they often fail to “hear” quiet tones and especially low tones. As a 5-string bass player I have a vested interest in tuning the low notes (which are also hardest for me to tune by ear), and I think Teüna succeeds for them. It’s the best microphone-based bass tuner I’ve ever tried at least.


Detecting pitch quickly is obviously important, and Teüna does it well. But I still use an iPhone 4 and we have a first generation iPad. These older devices can still be useful, but not if you want to throw them across the room before they finish loading your app. Even with its beautiful graphics, Teüna’s launch time is competitive compared to other apps.

Teüna is available on the App Store now. I’m planning to write more about developing it. Look around, join my mailing list or subscribe to this blog or Twitter for announcements, and let’s stay in touch, okay?