Audio Compressor & MP3 Cutter

Cut the chorus, save it as your ringtone, convert anything to MP3 — all on your phone.

HOW IT WORKS
1. Pick your audio file 2. Convert or cut 3. Save to Music or Ringtones — done

WHY PEOPLE USE IT
• An audio converter for MP3, M4A/AAC and WAV, at 96, 128, 192 or 256 kbps
• An mp3 cutter that trims by copying frames — no re-encoding, no quality loss, instant
• A ringtone maker: drag the handles, nudge to the exact tenth of a second, save
• Convert audio to mp3 from voice notes, recordings and downloads
• Trim audio down to just the part you actually want to keep
• Preview the result in a mini-player before you save anything
• Extract audio from video — MP4, MOV, MKV and WEBM go straight into the same converter

CONVERT BETWEEN FORMATS
MP3, M4A/AAC and WAV, at 96, 128, 192 or 256 kbps. Pick the format the app or device you are sending to actually accepts, and the bitrate that fits the size you need. Video files work too — drop in an MP4 and the audio track comes out on its own.

MORE THAN RINGTONES
Alarm tones, notification sounds, podcast clips, lecture recordings, WhatsApp voice notes you want to keep as a proper file. Anything you can play, you can cut down and convert.

MADE FOR RINGTONES AND VOICE NOTES
Drag two handles across the waveform, fine-nudge them, and save straight into your Ringtones folder. You choose it in Android Settings yourself — the app never changes your system settings for you.

FORMATS IT CONVERTS
M4A to MP3 · WAV to MP3 · AAC to MP3 · AMR to MP3 · OPUS to MP3 · FLAC to MP3
Video to MP3 from MP4, MOV, MKV and WEBM

COMMON QUESTIONS

How do I convert M4A to MP3?
Pick the file, choose MP3 and a bitrate, and save. Voice memos and iPhone recordings arrive as M4A, which is the usual reason people need this.

How do I convert a WhatsApp voice note to MP3?
WhatsApp saves voice notes as OPUS. Open one here, choose MP3, and it converts without going online.

How do I turn a song into a ringtone?
Cut the section you want, then save straight to Ringtones. Trimming copies frames rather than re-encoding, so there is no quality loss.

How do I get the audio out of a video?
Drop in an MP4, MOV, MKV or WEBM and the audio track comes out on its own.

Does it work offline?
Yes. Nothing is uploaded, so it works in airplane mode.

PRIVATE BY DESIGN
Your files are processed entirely on your phone — never uploaded.
No account needed. Works offline.
The free version is ad-supported — short reward ads you choose to watch, plus an occasional brief ad while longer jobs process. No banner ads. Pro removes every ad.

GO PRO — no ads, no limits
$4.99/month · $19.99/year with a 3-day free trial · or $29.99 once, yours forever.
Subscriptions renew automatically unless cancelled in Google Play at least 24h before the period ends. Manage anytime in Play Store → Subscriptions.

Support: [email protected] · Privacy: https://jacoblikestosleep.github.io/privacy.html