Guitar Tabs X is a powerful guitar tabs editor. Works with guitar, bass and ukulele.
Tabs can be exported to PDF and MIDI.
The app is intended as the guitar and bass players' notebook so you can easily write and save your ideas and songs as pro looking guitar tabs. As an addition the app supports ukulele tabs.
All tabs can be previewed and played. 
Great tool for bands, home players, song writers and guitar schools.
Guitar Tabs X exclusive features:

- Interactive tablature interface

- Special tab editing keyboard (like fretboard)

- Full screen guitar tab read and edit

- Smart bar metrics algorithms

- dedicated tab file format
- easy chord edit

- export tabs to PDF ( print ready )

- export song to MIDI (which you can import to any DAW)
other features:

- Fast tempo change

- Copy, paste, insert, delete and clear bars

- In-place edit title, artist and author

- ties
- bend up and bend down
- vibrato

- P.M.

- Bass tabs support

- Ukulele tabs support
- undo last actions

- send songs via email

- send songs to server

- guitar tabs server

- fast repeat chords
- distortion guitar and bass sounds
You can access your tabs via iCloud.