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Simple and powerful, this double bass tuner is both in one! You can listen the sound of each tuning string as well check & fine-tune the strings with the help of the chromatic tuner, placed in the middle of the app window!
App-features:

• Chromatic tuner with audio-input and microphone support,
• Tone generator with authentic double bass sound,
• Automatic repeating of the playing sounds,
• 11 pitches modes:

• Baroque,
• Scientific,
• France1859,
• New Philharmonic,
• Concert Pitch,
• Boston Symphony Orchestra,
• New Berliner Philarmoniker,
• Moscow Theater,
• Old Berliner Philharmoniker,
• Old Philharmonic,
• Renaissance.