Precision Strobe Tuner 2.0 - App Store

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About Precision Strobe Tuner

Precision Strobe Tuner 2.0 A General Purpose Chromatic Musical Instrument Tuner App with special Temperament and Piano Tuning Functions. The PST combines a radial Spectrum Display with a classic Strobe Tuner and Note Dial...

Precision Strobe Tuner 2.0 A General Purpose Chromatic Musical Instrument Tuner App with special Temperament and Piano Tuning Functions. The PST combines a radial Spectrum Display with a classic Strobe Tuner and Note Dial for an ultimate visualization of pitch and tone. The Strobe Display is highly sensitive with response speed that is practically instantaneous and has long been the preferred tool for piano tuners and instrument technicians. The central Spectrum Display shows the input spectrum wrapped around the Display, with each Octave drawn in a separate color. The Note Dial is marked like a clock with the twelve notes of the Scale. All overtones of the input are shown as peaks in the Spectrum Display pointing towards their corresponding Notes. The Fundamental Indicator Tic on the Spectrum Display shows the Note of the Fundamental along the Note Dial, with the color designating the Octave. Use the Spectrum Display for coarse adjustment by tuning the Fundamental to the center of the desired Note Indicator. As the input approaches the desired Note, a Two Group pinwheel pattern becomes visible rotating in the Strobe Display. Fine tuning is accomplished by adjusting to stop rotation. The Strobe Display responds instantaneously to changes in pitch and is extremely sensitive. The outside Strobe Display works just like a classic rotating disk strobe tuner. The Two-Group pattern rotates CCW when the input is flat, and CW when sharp. When the rotation is stopped, the note is in tune. The previews show a general strobe display demonstration, an example of using the calibration function to measure the accuracy of a tuning fork and an example of guitar string tuning. The first screenshot shows the display tuning a Guitar Low E string. The Fundamental appears as an Orange peak in the Spectrum Display. This string rings bright, so the overtones are also dominant in the Display. The second screenshot shows the display for an E 440 Tuning Fork with the Calibration Dial enabled and adjusted. This Fork is 2.9 cent Flat. The PST also includes a Programmable Temperament Function with 5 user definable banks. The third screenshot shows an example of a Temperament Bank set up to a typical Piano Stretch Curve. This can also be used for tuning alternate temperaments, pedal steel guitar setups, or special guitar intonation systems. In addition, there are several Special Measurement Banks used for String Inharmonicity characterization and Piano Stretch Curve Estimation. Individual strings can be characterized by measuring the Fundamental and 2nd Harmonic separately. By careful selection of a few representative measurement points, a reasonable smooth fit Piano Stretch Curve can be generated. Any number of measurements can be used. The final screenshot shows the Input Signal Scope/Spectrum Display Page. The Detailed Operation Manual can be viewed here: www.precisionstrobe.com

Version History Updates for new device screens. 2.0 11/12/2025 Updates 1.94 11/02/2025 Updates for new devices and IOS 18. 1.93 12/16/2024 Updates for new devices. 1.92 08/17/2024 Updates for iPad and iPadOS 1.91 01/19/2023 Fixes for iOS 16. 1.9 12/10/2022 More screen size updates. 1.82 04/20/2022 Updates for newer device sizes. 1.81 04/14/2022 Added Reference Tone Output. 1.80 03/29/2022 Minor Updates. 1.72 06/16/2020 Display Refinements. 1.71 05/19/2020 - Added Tuning Bubble Meter - Display Refinements - Minor Bug Fixes 1.70 05/21/2019 Added Input Level Meter. Added TrueTemperament System Support Minor Bug Fixes 1.64 04/19/2019 Improved Note Tracking Stability. Added Low Frequency and 60Hz Noise Rejection Setting to Note Tracking Settings Page. Useful in some situations on newer iPhones with improved Low Frequency Sensitivity. Show additional information in the new Input Signal/Spectrum page to the far left of the Settings section. Previous update fixed a major bug which caused the Strobe Display to malfunction for notes lower than about A440 due to a change in hardware audio sample rates on new iPhones. Previous update fixed a bug involving the microphone permission request on IOS10. 1.63 12/13/2016 Fixed a major bug which caused the Strobe Display to malfunction for notes lower than about A440 due to a change in hardware audio sample rates on new iPhones. Fixed a bug involving the microphone permission request on IOS10. Added a Signal/Spectrum display page to the far left of the Settings section. 1.62 11/30/2016 Added Landscape Orientation Support for iPad. Added Upside Down Orientation Support for iPhone, which you can now hold with the microphone pointing away from you. Minor bug fixes. 1.61 07/06/2016 Added Auto-Calibration Function. Added Import/Export of Temperament Bank Data text through system clipboard. Added Tap in Calibration Dial for single Tic adjustment. Minor change in String Inharmonicity Measurement Operation. Several minor bug fixes. Minor layout changes. 1.6 05/14/2016 Improved Note Tracking Stability, particularly for the low strings of Guitar and Bass, as well as for the low end of Piano. New Fundamental Indicator Tic on the Spectrum Display designates input Fundamental Note and Octave directly. New Button in Setup Pages links to online Detailed Operation Manual. 1.5 04/08/2015 - iPad and iPhone5 screen size support. - Add five User Temperament Banks. - Add String Inharmonicity Measurement Functions. - Add Piano Stretch Curve Calculator Function. 1.4 06/24/2013 - Add Temperament Mode with one User Configurable Bank and several presets. - Add Instruction Manual to Setup Pages. - Fix bug causing instability of the Strobe Display in certain Note Settings. - Improve Strobe Display performance in the low two octave range. 1.3 05/11/2013 - Update for IOS 6.1 - Add calibration adjust dial with coasting. - Change octave up/down buttons and add flash display of octave. - Improve note selection to allow sliding between notes and flash frame around new note. - Add descriptions in setup pages. - Fix minor bugs and typos 1.2 04/04/2013 Update to IOS 5.0 and minor bug fixes. 1.1 06/07/2012 1.0 04/19/2011

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Previous Versions

Here you can find the changelog of Precision Strobe Tuner since it was posted on our website on 2016-09-30 15:09:48. The latest version is 2.0 and it was updated on 2026-06-10 09:50:32. See below the changes in each version.

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