If you take singing seriously — whether you’re in weekly vocal lessons, practicing at a karaoke booth, or drilling breathing exercises at home — you already know the problem: feedback disappears the moment the session ends. You walk out with a head full of notes from your trainer, record yourself on your phone, and then never actually go back and connect the two.
I built Vocal Recorder because I kept losing that connection. I wanted one place where the recording and the annotations lived together, so that when I replayed a take, I could see exactly where my breath broke, where my pitch drifted, and what my trainer had flagged — without digging through a separate notes app.
What It Does
- Waveform recording with inline annotations. Every recording generates a waveform, and you can drop timestamped markers directly onto it across seven categories: breath, emphasis, pitch, caution, nailed it, feeling, and lyrics. When you play back, the markers sit right where the moment happened.
- Sheet music viewer built into the player. Attach a PDF score to any track and it opens side-by-side with the waveform player. Pinch to zoom, swipe between pages — you can follow along with your own recording without leaving the app.
- Folder and tag organization. Three default folders — Personal Practice, Karaoke, and Vocal Lesson — cover the most common contexts out of the box. You can also create your own tags for things like genre, key signature, or trainer name.
- Practice streak tracking. The library header shows how many consecutive days you’ve practiced. It’s a small nudge, but it makes a real difference when you’re trying to build a daily habit.
- Import existing audio and full backup. Already have recordings on your device? Import m4a or mp3 files and annotate them the same way. When you’re ready to move phones, export your entire library as a zip and restore it on the new device.
Everything stays on your device. There’s no account, no login, and no data sent to a server. Ads are served through Google AdMob, but your recordings and annotations never leave your phone.
This app is for anyone who treats singing as a skill to be systematically improved rather than just enjoyed in the moment. That means vocal students who want to revisit their trainer’s feedback between lessons, karaoke regulars who actually want to analyze their recordings instead of just deleting them, and self-taught singers who are trying to build an honest, data-rich picture of where they stand. If you’ve ever listened back to a recording and wished you could mark the exact second where something went wrong, this is built for you.
Vocal Recorder — originally released under the Korean name 노래 녹음·메모 — is version 1.0, which means it’s lean and focused. The core loop of record, annotate, review is solid, and I’m planning to build on it based on real usage. If you give it a try, I’d genuinely love to hear what’s missing.
Download on Google Play: Vocal Recorder – 노래 녹음·메모
Official page: reactiveworks.dev/apps/6764782243
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