The language of Nashville Numbers, in your pocket
NNS Pro helps bands, worship teams, and session musicians communicate faster and play better together.
Used by bands, session players, and worship teams
Everything you need on stage and in studio
Built by musicians for musicians. Every feature solves a real problem we faced in rehearsals and live performance.
iOS & Android
NNS Pro runs on every device in your bag — iPhone, iPad, Android phone, and Android tablet. Your whole band, regardless of platform, stays covered.
Instant Transposition
Prefer chords over numbers? Write a chart once, play it in any key. Tap the key badge and every chord re-maps in real time — mid-song, mid-rehearsal, no rewrites, no second copies.
Industry-Standard NNS Notation
Full support for chord qualities, inversions, rhythmic pushes, dynamics, hairpins, repeat structures, numbered endings, and navigation marks — the complete Nashville toolkit.
Annotate Without Leaving the App
Draw, highlight, and add text directly on any chart — including image and PDF chart types. Annotations stay anchored to their measures and mean that you don't have to move them each time you resize your chart or switch notation style.
Stage-Ready Performance Mode
Swipe through your setlist song by song, transpose and resize on the fly. No awkward searching for your next song. Need help with the count-in or song speed? Just tap the metronome icon to see the live beat indicator, ensuring you're always playing the right tempo.
Practice Along with the Recording
Link a YouTube video or attach a local audio file to any chart and play it as you practice. Want a cleaner playback experience? Play back MIDI chords with the current chord highlighted as it plays. Nothing else in a charting app comes close.
Real-Time Cloud Sync
Your charts live in the cloud and can be synced across all your iOS and Android devices. Never worry about losing a device. Want to share your charts with a bandmate? Just create a shared login and sync up on the same account — no need to export, email, or import files.
Setlist Management & Sharing
Quickly add, remove, and reorder songs and labeled breaks in any setlist. Export the whole bundle as a single shareable file so your band is always on the same page.
Import Your Existing Charts
Bring your existing library with you. NNS Pro imports .1ch, .1nb, and .nns files, validates the structure, and converts automatically so you pick up right where you left off.