Music notation is made simple with this shorthand system which puts chords into numbers 1 though 7 and streamlines the page into a simple and clean format. Forget about pencil, erasers and photocopy! This app combines technology with tried and tested methods; allowing users to create song charts with the ease and speed of pen and paper.

For over 60 years, the Nashville Number System has been the standard for musicians in live performance, recording sessions, and teaching environments. The published book has become required reading in many of the most prestigious music schools, including Belmont, ETSU, Lee and Liberty University, while also being required reading for anyone when they get their first gig in music city.

This innovative app brings the must-read instructional book by Chas Williams, with well over 50,000 copies sold, into our digital age by seamlessly allowing charts to be written on your digital device!

Please give feedback of a 5 star review, or contact us directly. If you’re not happy with the app, we will issue a full refund of your purchase price (in exchange for not writing a bad review) and insure your issues are reviewed and fixed. You can keep your version and be notified when an update has been made.

Thank you for your business. My name is Leland and I’m on the development team along with Chas. My personal email is so you can contact me with issues or great musical stories!

Chart Everything My Friends!!!

What’s New

Version 1.6.4

Improvements and updates

Ratings and Reviews

4.7 out of 5
55 Ratings

55 Ratings

Chris in Nashville ,


I just started using the app this weekend and it’s the only thing I’ve seen that actually works for the number system. I showed it to a friend who’s a long time studio guitarist and a charting master and he was very impressed. The only issue I’ve found is while it’s very intuitive I haven’t been able to get different bass number in a chord like in the samples. I’m sure it’ll be easy once you found out how. Maybe ad that to the tutorial.

Developer Response ,

Hi Chris! Thanks for the great review!
The INV (Inversion) button is how you get a different bass note. Enter the chord, hit INV, then enter the bass note.

montiver ,

Copy paste bug

Just bought this app today. Using it on a brand new iPad Pro 12.9”. The app is good but there is a significant bug with the copy paste section feature. It seems to work for a bit then crashes the app. copy paste section saves a lot of time when it works. a deal breaker for me until it gets fixed. If the app owner wants I can send a screen recording of the issue

Developer Response ,

Yes there is a copy and paste bug once you’ve charted past the “1st page” of your iPad. I have never written a chart that long, so I was surprised to see the problem. However, glad to know about it.
We are working on getting it fixed. Meanwhile, I’ve offered montiver a refund and thanks for making us aware of the bug.

sethhajek ,

Thank You!

Finally an App that gets it. I’m a professional musician in Nashville that needs to be able to make charts quickly using he Nashville number system. This is it! Very intuitive, and saves so much time compared to old fashioned paper charting and scanning. Also the ability to instantly change it to traditional chord charts for those who prefer copies in that format is priceless.

App Privacy

The developer, Music City Apps, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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