SOS to Sing: Key Finder

🎤 Maybe you're not off-key. Maybe you're just singing in the wrong key.

Plenty of people sing well and still sound out of tune. The reason is almost never a lack of voice: it's singing at a pitch your voice can't reach. Your throat tightens, you run out of air and the note slips — and the listener doesn't think "this song is too high for her". They think you sang OUT OF TUNE.

The original chord sheet is in the original singer's key, and their voice isn't yours. Nobody has to fit into someone else's voice.

SOS to Sing is a must-have for anyone who sings for fun or professionally, church musicians and worship teams. It gives you what you need for a performance everyone will enjoy — no embarrassment, no imitating anybody. It will be your performance, with your soul, your voice, in YOUR key.

SOS to Sing finds YOUR key by listening to you sing, and rewrites the whole chord sheet from it.

🎯 HOW IT WORKS — THREE SIMPLE STEPS

1. Search for the song right in the app: type the song or artist name, pick it from the list and the chords come in ready. (Prefer your own chords? Just paste the text.)
2. The app shows the lyrics like a teleprompter, and you sing a few lines at whatever pitch feels natural. No need to be in tune or hit any key — and there are no chords on screen, so nothing influences your voice.
3. The app analyzes what you sang, compares it with the song's original key and shows the whole chord sheet rewritten in your exact key.

No counting half steps on your fingers. No trial and error. No straining. No music theory needed.

📚 YOUR CHORD LIBRARY, ALREADY IN YOUR KEY (full version)

Every chord sheet you adjust is saved automatically, so you can play and sing it again without repeating the process. On the main menu, tap "Open chords from your history", type the song or artist name and it opens right away, in your key. Can't remember the name? It searches the lyrics too.

And the finished chords leave the app however you want: WhatsApp, email, print or file.

🎼 TRANSPOSITION DONE RIGHT

SOS to Sing knows the difference between a chord and a word: the lyrics stay intact and every chord stays right above the syllable where it belongs. It also cleans out tabs and clutter, giving you a clean, readable chord sheet. Want it a little higher or lower? Use the half-step buttons on the result screen.

🎧 PLUS THE LIVE DETECTOR

For when you just want to tune up or find out what key a song is in:

• Note and key in real time, from your voice or whistling
• Chromatic tuner accurate to the cent
• All the chords of the detected key
• Harmonic GPS: chords that fit, dominants and borrowed chords
• Dictionary with over 1,700 chord voicings for guitar and keyboard

🔒 PRIVACY FIRST

Microphone audio is analyzed only on your device and discarded instantly. Nothing is recorded, stored or sent to servers: no sign-up, no login, no ads. Your chord library stays on your own phone, not in the cloud.

🎵 FOR PEOPLE WHO REALLY SING

• Singing at church without slipping up in front of everyone
• Grabbing the mic at a party, a birthday or around the guitar with friends
• Not giving up on a beautiful song just because it goes too high
• Accompanying someone on guitar and finding their ideal key

Singing in the right key doesn't turn you into someone else — it just frees the voice you already have.

You don't need to know music theory. You just need to sing.

SOS to Sing gives you 2 free songs to try. The Live Detector is free for 7 days. Full, unlimited access is a one-time purchase — lifetime access, no monthly fees.

Recent changes:
The app is now available in English.
Free version: 2 songs to try.