Lemon Lens: Voice Monitor

Lemon Lens is a real-time voice monitor. We can't call it a lie detector, but it's the closest thing to one. Tap the big red button and watch how each voice in the room changes as the conversation goes on. LIVE VOICE-CHANGE METER - A 0-10 meter shows how far the voice that is speaking has moved from that same voice's normal - It learns each voice from its first few lines, then compares pitch, pitch swing, volume, pace and the pause before answering - Tells you why it moved: "pitch up 5.9 · pace down 2.4" - Finds two voices on its own (lower and higher) and compares each one only with itself LIVE GRAPH - The last 60 seconds of pitch for each voice, with that voice's usual range shaded - A loudness strip underneath - Flag markers where a voice shifted FLAGS - A running list of the moments worth another listen, with the time and the reason RECORD, SAVE, SHARE - Big red record button with a timer and mic level - Recordings and a notes file save to Downloads/Lemon Lens - Share a recording to your computer, email or cloud storage in one tap - Open the recording in The Lemon Lens desktop app for a full transcript and report YOUR LOOK - Three themes (Lemon, Studio, Counsel), three layouts (Classic, Control Room, Focus), light and dark mode PRIVATE BY DESIGN - No account, no ads, no analytics, no internet connection - Nothing leaves your phone unless you tap Share IMPORTANT We can't call Lemon Lens a lie detector, because no app can tell for certain whether someone is telling the truth. But it's the closest thing to one: it shows you the moments a voice changes. Stress, excitement, anger, emphasis and a bad line all move the meter. Use it to decide where to listen again or what to ask next. Phones do not let apps hear the audio of a phone call, so Lemon Lens records what the microphone hears: people in the room, or a call on speakerphone. Some places, including California, require everyone in a conversation to agree before it is recorded. The app asks you to confirm this each time.

First release of Lemon Lens: a live voice-change meter, pitch graph and flags with a big red record button. Recordings stay on your phone.