Upload or paste
Upload your own recording — an MP3, a band demo or a voice memo — or paste a chart in ChordPro.
Every song you play, in one place.
Your personal practice toolkit for guitar, bass and uke. Learn a song, loop the parts that trip you up until they stick, and keep it all in a songbook that’s yours.
Illustrative product examples. Ongoing AI use requires Pro.From “what was that song?” to playing it
Get a chart you can play
Audio analysis estimates the key, tempo and chords. Review the chart and save it. Add lyrics yourself or try the optional transcription feature.
Practice it, keep it
Save your chart to your songbook. With audio analysed on this device, loop a passage and adjust or mute the separated tracks.
Your chart and practice tools, together
Upload a track, loop any part
Analyse a browser-supported audio file to estimate its key, tempo and chords. On the device that processed it, select a passage to loop while you practise.
Lyrics transcription, when you need it
Try one free transcription attempt, then continue with a Pro subscription. Enable transcription when adding a recording or choose Transcribe afterwards. Review the words and chord timing for mistakes.
Ask it like you’d ask a teacher
Ask about theory or technique, or use Pro to have the AI assistant look up and edit charts in your cloud library. It can show chord and scale diagrams for your instrument. These are illustrative examples; answers and edits can vary.
Try Fmaj7 instead of F in the verse
Swapped F for Fmaj7 and saved V2. This changes the harmony, so check it against your melody.
What can I solo with over Harbor Lights?
A minor pentatonic — start in the box at the 5th fret. Roots are marked.
Move it to E minor for my voice
Done — Am F C G becomes Em C G D. No capo needed.
Play for free. Go further with Pro.
Practice tools and on-device audio analysis are free. Try the AI assistant and lyric transcription with Free; ongoing use requires a Pro subscription.
Free
On your device$0to use
- Tuner, metronome and theory tools
- Unlimited on-device audio analysisStem separation, key, tempo and chord estimates
- Up to 5 saved songsCharts and edits stay in this browser
- Demo usage
Pro
Cloud features$7.99per month
Pro upgrades will be available soon.
- Everything in Free
- AI assistant and lyric transcriptionShare a monthly usage allowance
- Unlimited saved songsSave new charts to the cloud and open them on another device
- Cloud audio syncStems analysed on one device play on every other
- Premium AI model
Questions, answered
Something else? Get in touch.
Which instruments does it work with?
Guitar, bass and ukulele. Choose your default instrument for chord and scale diagrams, or switch instruments while practising.
Where do my songs come from?
From you. Paste lyrics and chords in ChordPro format, or analyse your own recording to estimate its key, tempo and chords. Optional lyric transcription includes one free attempt; further use requires a Pro subscription and is subject to its monthly allowance. We never pull songs from the web.
How accurate is audio analysis?
Stem separation and chord detection run on your device. Results depend on the recording and can contain mistakes: instruments may bleed into other stems, and chords, key or timing may need correcting. You can edit the chart before saving and afterwards.
What if a chord is wrong?
Edit it on the sheet and save your changes. With Pro, you can also ask the AI assistant to edit charts saved in your cloud library. Saving chart changes creates a new version; you can view and restore earlier versions from the version menu.
How does the Pro allowance work?
AI chat and lyric transcription share your Pro monthly allowance. Usage varies by request, so the allowance does not guarantee a fixed number of answers or recordings. It resets on the first day of each month.
I’m a complete beginner. Is it for me?
You can explore chord diagrams, use the tuner and metronome, and ask the AI assistant for easier voicings or a simpler strumming pattern. AI suggestions can be wrong, so listen and check that they fit your song.
Does it work on my phone?
Fretline works in a browser on phone and desktop. Audio processing speed and supported file formats depend on your device and browser.
Where are my songs stored?
Free songs and edits stay in this browser. Pro can save new charts to the cloud for access on other devices. Upgrading does not automatically move existing local songs. On Free, analysed recordings, stems and playback timing stay on the device that processed them; clearing browser data can remove local songs and audio. Pro uploads the stems of a cloud song as MP3 and the analysis beside them, so the song plays on every signed-in device. Transcription sends audio for cloud processing.
Bring the song you’re learning.
Start with the free tools, add the songs you’re learning, and save your charts and lyrics in your songbook. No card needed.
Try for free