シンプル音階解析ツール

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A simple tool for visualizing sound — Simple Scale Display Tool
"What note is that sound?" Instantly see it. Whether it's a voice or an instrument, it detects it in real time using your smartphone's microphone and displays it in Do-Re-Mi. Perfect for checking tuning, ear training, or practicing live. No complicated setup is required, and it's super simple to use.

### Main Features

* Real-time sound detection
Audio captured by your smartphone's microphone is analyzed internally. Detection is performed in real time, and the scale (Do/Re/Mi...) is displayed large on the screen. We aim for a sleek, low-latency experience.
* Highly visible display
Large scale and frequency (Hz) displays let you see the "current note" at a glance. Supports both portrait and landscape orientations for easy viewing.
* Simple sound history display
View recent notes by scrolling horizontally. Follow the flow of short phrases. (Expanded history will be available in a future update.)
* Works offline
Audio analysis is completed within the device. Recorded data and analysis results are never sent to a server (there is no mechanism for sending data outside the device). Privacy-conscious users can rest assured.
* Sound Playback (Reference Sound)
Reference sounds corresponding to detected sounds are played from audio files on the device (controlled to prevent continuous overlap).
* Ads
To provide the service free of charge, Google Mobile Ads (banner ads) are displayed. Ads are fixed at the bottom of the screen.

### How to Use (Super Easy)

1. Launch the app → Request microphone permission the first time (required).
2. Tap "Start Analysis" to analyze the microphone sound, and the musical scale and Hz will be displayed in the center of the screen.
3. Press "Stop" to stop, or "Reset" to clear the history.

### Required Permissions

* Microphone (Recording): Required for audio input. Analysis is performed only within the device and is not sent to an external server.

### Technical Points (for those interested)

### Notes

* Analysis is not possible without microphone permission. Please be sure to grant permission.
* Detection accuracy varies depending on ambient noise, the environment, and the microphone's performance. For precise tuning, we recommend using dedicated equipment.
### Future Plans (Example)

* Detailed history logging (including export)
* Pitch deviation display (in cents) and tuning assistance mode
* More diverse sound source playback and sample sound additions

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If you like the app, please rate and provide feedback. Bug reports and "I wish I had this feature" requests are welcome. Including your device model, Android version, and the issue you're experiencing is extremely helpful (the developer will fix it with a smile).

Now, let's "visualize" your ears and go on a Do-Re-Mi adventure. —

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