Guitar Tuner: Pitch Tune

🎸 Guitar Tuner — pitch check for standard guitar strings on your phone

Need to tune before practice, lock a single string, or nudge A4 for the room? Guitar Tuner listens through the mic, shows the nearest note, and a cents needle so you can see flat, sharp, or in tune at a glance.

No accounts and no cloud — on-device pitch when you need a quick tune-up.

🔊 How it works
1️⃣ Tap Listen and pluck a string near the mic
2️⃣ Watch the note name and cents needle (green when close)
3️⃣ Use Auto or lock E2–E4 for a fixed target
4️⃣ Nudge A4 (430–450 Hz) if your reference isn’t 440

⚠️ Approximate mic tuner. Quiet room works best. Not a studio strobe or rack tuner.

🛠 Key features
🎸 Live note + cents stage
📏 Auto detect or lock a string
🎚 A4 reference 430–450 Hz
▶️ Sticky Listen / Stop
⚙️ English and Russian
📴 Core tuning works offline (after install)

🏠 Perfect for
✔ Quick tune before practice
✔ Checking one string at a time
✔ Standard EADGBE setup
✔ DIY players who want a clear flat/sharp cue

⚠️ Important notes
Does NOT replace a calibrated studio tuner
Does NOT teach chords or play backing tracks
Does NOT work without microphone permission
Phone-mic estimate — environment and phone mic quality matter

🔐 Privacy first
🔒 No accounts
🔒 Pitch processing stays on-device
🔒 No cloud required for tuning

📱 Guitar Tuner — a clear cents needle when the string has to sit right