Stone - The Idea

The core of Stone is a user defined tone set based on the chromatic scale.

Stone shows all chords and scales which include this tone set on an arbitrary instrument, tuning and position.

Version Information

Platform: IOS
View in ITunes

Getting Started

After installation of Stone the set of tones is empty and no chords and scales are shown. The favourite list is initial, too. First of all go to tab instruments and select an instrument or tuning you like. "Guitar (Standard)" is selected by default.

Switch to tab "Tones"(named "Set of Tones" in the following) and tap all tones you want to use. Press the Add-Button ("+") in the upper right corner to add tones of chords and scales or to add tones by tapping frets or keys on your instrument.

Switch to tab "Chords" or "Scales" to see all matching chords or scales. Select one chord or scale to show it's representation on your instrument. Swipe right on a chord or a scale on the affected tabs to use that chord or scale as "set of tones".

Tab "Instruments and Tunings"

Stone allows to represent chords and scales on the following instruments and tunings.
Tuning Description
Guitar (Standard) Six string Guitar Tuning (e, a, d, g, h, E)
with 16 frets
Piano and Keyboard Two octaves of Piano/Keyboard
Bass (Standard) Four string Bass Guitar
Tuning (e, a, d, g)
Mandolin (Standard) Mandolin Standard
Tuning (g, d, a ,e)
Guitar (Drop D) Six String Guitar Tuning with base string e tuned down to D
(d, a, d, g, h, E).
Guitar (Double Drop D) Six String Guitar Tuning with base e and upper E string tuned down to d/D. (d, a, d, g, h, D)
Bouzouki (Standard) Tuning (g, d, a ,e) similar
to Mandolin Standard Tuning

Go to tab "Instruments" and select the instrument you want to use. The selected Instrument is marked "Active". You can switch between instruments and tunings each time you like.

Tab "Set of Tones"

The Set of Tones is changed on tab "Tones". Select the tones you want to add or remove. If an unselected tone is tapped it becomes selected and vice versa. Tones which are part of the set of tones are marked "(Selected)". Stone additionally allows you to add tones by using several options. Type the Add-Button("+") in the upper right corner on tab "Tones". You can select between the following options:

Adding tones "of Chords"

By tapping the option "Add tones .. of Chord" Stone asks the user to select a Chord by specifying the chord base tone and type. Stone adds all tones of the specified chord to the set of tones.

Adding tones "of Scales"

By tapping the option "Add tones .. of Scale" Stone asks the user to select a scale by specifying the scale base tone and type. Stone adds all tones of the specified scale to the set of tones.

Adding tones "of Favourites"

By tapping the option "Add tones .. of Favourite" Stone asks the user to select a Favourite Chord from the Favourite chord list. Stone adds all tones of the specified favourite chord to the set of tones.

Adding tones "by Instrument"

By tapping the option "Add tones .. by Instrument" Stone displays the currently "Active Instrument". String based instruments are represented by a neck built by all strings of the instrument and tuning. The instrument "Piano and Keyboard" is represented by the keys of two octaves. Add or remove tones by tapping on the strings/frets or on the piano keys. Typing on already selected keys or frets removes the tone from set and vice versa. String instruments allow scrolling up and down frets by swiping up and down the touch screen.

Removing Tones

Stone allows you to delete tones by using the same options as provided by the "Add" function. Tap the Trash-Button in the upper left corner on tab "Tones". Instead of adding tones of chords, scales and favourites the tones are removed from the set of tones. The option "Remove tones .. by Instrument" works like "Add tones by Instrument". Additionally the removing function offers the option "All" to remove all currently selected tones in set of tones. Use this option to reset the set of tones.

Tab "Chords"

Tab "Chords" includes all chords that are completely part of the set of tones or include the tones completely. Chords may have less tones than defined in the set but must be completely part of the set (c, e, g) - e.g. "C5" (c, g). Chords may have additional tones but must include all tones of the set of tones - e.g. C7 (c, e, g, +Bb).

How to read the chord table

Chords whose tones are identical to the set are indented and marked with . Chords whose number of tones is less than the set are marked and displayed with an italic chord descriptor. Chords that have more tones than defined in the set are marked and displayed with a bold chord descriptor. If you want to reversely find a chord by a set the chord marked is yours.

How to Find Voicings

Select one chord in the chords table to start the instrument representation of the specified chord. The instrument representation displays all chord tones. Those tones which can be used to play the chord on the currently selected fret are coloured gray. Stone only advices voicings which include all chord tones at least once. If a chord cannot be played on a fret nothing is marked gray - e.g. all x13 chords
have seven tones but guitars only six strings. The chord base tone is coloured red or gray with white coloured text.

How to Add Favourites.

If a voicing is possible on the instruments tuning it can be added to the favourites list by tapping the Add-Button("+") in the upper right corner on tab "Chords". Voicings cannot be added twice. If a chord/fret combination is already part of the favourite list it cannot be added again.

Chord Sort Order

Chords of tab "Chords" are sorted ..
  1. ascending by the base tone (c, c#, d, ..)
  2. descending by the number of chord tones. "Bigger" chords are used first.
  3. ascending by the chord type as defined by Stone.
The sort order allows to quickly find chords by the base tones.

Tab "Scales"

Tab "Scales" displays all scales which include the set of tones completely.

Instrument Representation

Similar to tab "Chords" the instrument representation is started if one scale is selected. All tones of the scale are displayed on the instrument and all tones defined in the set are coloured gray. Scroll up and down the frets to find your position by swiping up and down the touch screen.

Tab "Favourites"

Select tab "Favourites" to display all existing Favourites. All Favourite chords are grouped by instrument. The favourite overview shows all instruments and the number of favourites defined for that instrument. Select one instrument to see all stored chords for that instrument. Favourite chords are sorted similarly to chords of tab "Chords". Swipe right on a favourite chord to use that chord as "set of tones". This function equals the swipe gesture on tabs "Chords" and "Scales". Tap the Trash-Button in the upper right corner of tab "Favourites" to remove chords from favourite list.