Kaira Apps for Android

Decibellum

A focused audio converter for turning everyday recordings, voice notes, and music files into the format you actually need.

View the app Privacy policy

Local-first conversion

Your audio stays on your device.

Practical presets

Voice Note, Podcast, High Quality Music, and Small Size presets give you a sensible starting point before you fine-tune.

Flexible output

Choose format, bitrate, sample rate, and channel options where the target format supports them.

Built for longer work

Pro unlocks batch conversion, background queues, longer files, custom output folders, and filename templates.

Supported exports

The formats people actually ask for.

MP3 AAC WAV FLAC OGG M4A Opus

Interface

Small controls, clear decisions.

Decibellum home screen with file selection and batch conversion controls — Start with a single file or a Pro batch queue.

Decibellum conversion screen with waveform, format controls, and audio tools — Preview, trim, normalize, and choose output settings.

Decibellum Pro screen with one-time purchase and premium feature list — One-time Pro upgrade for heavier conversion workflows.

Free and Pro

Start free. Upgrade when conversion becomes routine.

Free

Ad-supported conversion for everyday files up to 25 minutes.

Single-file conversion
Core export formats
Playback and sharing

Decibellum Pro

A one-time purchase for users who convert often.

No advertisements
Longer audio files
Batch conversion and background queue
Custom folders and filename templates

Privacy

Designed around local audio processing.

Decibellum does not upload selected audio files to Kaira Apps servers. Advertising, diagnostics, and purchase processing are handled through Google services and are described clearly in the privacy policy.

Read privacy policy