Last updated: 2026-10-31
Vibrato Check ("the app") is made by Chungkyeong Lee. This policy explains what the app does with information. It applies to the app on iPhone and Android.
Nothing. The app has no accounts, no sign-up, no advertising, no analytics and no tracking, and it does not connect to any server of ours.
When you hold the record button, or tap Measure room, the app uses your device's microphone to measure the note you sing and the noise level of your room. The sound is analyzed on your device. It is never sent to us or anyone else. A recording is kept only if you tap Save.
Saved takes (their audio and measurements) and your settings (voice type, tuning, threshold, haptics) are stored only on your device. They leave it only if you share a take's audio yourself or your device's own backup includes them. Deleting a take, using "Delete all takes" in Settings, or deleting the app removes them.
The app contains no third-party SDKs that collect data. We do not sell, rent or share any information.
We keep no personal data, so there is nothing to delete on our side. If you have any request about your data, email us and we will answer within 30 days.
The app does not knowingly collect information from anyone, including children.
If this policy changes, the new version will be posted on this page with a new date.
Chungkyeong Lee · [email protected]