PianoMeter – Piano Tuner 4.0.0

PianoMeter is a professional piano tuning application designed for Android devices. It offers a unique approach to tuning, aiming to replicate the nuanced adjustments made by skilled piano tuners. The free version is limited to evaluating notes between C3 and C5, with full piano tuning capabilities available through in-app purchases.

The app stands out by meticulously measuring the tonal qualities of each note and calculating custom tuning adjustments based on factors like fifths, fourths, octaves, and twelfths. This personalized tuning method results in a precise tuning tailored to your piano's characteristics.

Functionalities are segmented into three tiers: a free evaluation version, a paid "plus" version with basic tuning functions, and a "professional" version catering to seasoned piano tuners. Extra features can be accessed through one-time in-app purchases.

The Free version includes:

• Tuning for the mid-range of the piano
• Automatic note detection
• Comparisons of current tuning with ideal tuning curves
• Live frequency spectrum display

Upgrading to the "Plus" version unlocks:

• Tuning functionality for the entire piano range
• Support for various frequency standards and temperaments
• Calibration to external frequency sources

The Professional version includes all "Plus" features and offers:

• Save and load tuning files functionality
• Pitch raise mode for initial rough tunings
• Create custom tuning styles
• Access to all future updates and enhancements

Upgrade costs are as follows:

• Free to Plus: Approximately US$25
• Free to Pro: Approximately US$300
• Plus to Pro: Approximately US$275

Note on permissions: PianoMeter requires access to your device's microphone and file system for proper functionality.