Guidonian Hand vs rapDo!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Guidonian Hand
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In Medieval music, the Guidonian hand was a mnemonic device used to assist singers in learning to sight-sing. With this app you can learn how it was used and have some fun making music. This app turns images of the Guidonian hand into a keyboard which you can play. Each joint and tip of a finger is a key which plays an instrument tone, a solmization syllable or a MIDI pitch. The keys can be visualised in different ways. You can also play on photos of real hands thanks to hand recognition. Guido of Arezzo or Guido d'Arezzo (c. 991–992 – after 1033) was an Italian music theorist and pedagogue of High medieval music. Guido developed new techniques for teaching, such as staff notation and the use of the "ut–re–mi–fa–sol–la" (do–re–mi–fa–so–la) mnemonic (solmization). The idea of the Guidonian hand is that each portion of the hand represents a specific note within the hexachord system, which spans nearly three octaves from "Γ ut" (that is, "Gamma ut") (the contraction of which is "Gamut", which can refer to the entire span) to "E la" (in other words, from the G at the bottom of the modern bass clef to the E at the top of the treble clef). In teaching, an instructor would indicate a series of notes by pointing to them on their hand, and the students would sing them. The notes of the gamut were mentally superimposed onto the joints and tips of the fingers of the left hand.
rapDo!
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rapDo! is your digital rhythm coach. You don’t need an instrument and can learn and practice anytime, anywhere. You’ll learn rhythm like a language, using just five syllables. You start with simple rhythm "words" and progress to rhythm "sentences." This approach covers all possible rhythms found in classical music, pop, dance music, and jazz. rapDo! adapts to your progress: mastered rhythms are set aside, while challenging rhythms are repeated until you perfect them. At the same time, you’ll see how the spoken rhythms look in standard notation, allowing you to learn rhythm and sight-reading simultaneously. Learning with tonal syllables is a proven and globally recognized method. It is much faster and more effective than calculating with note values (quarter notes, eighth notes, sixteenth notes, etc.). The rapDo! method is scientifically grounded. Its foundation is based on the groundbreaking teaching work Learning Sequences in Music by Edwin Gordon. For more information, visit www.herbertschiffels.de
Screenshots
Verdict
The clearest difference is price: Guidonian Hand at $1.99 against rapDo!'s $2.99. rapDo!'s advantage is iOS requirement (17.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Guidonian Hand costs $1.99 and rapDo! $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Guidonian Hand | rapDo! |
|---|---|---|
| Price | $1.99 — better | $2.99 |
| Update frequency | Every 52 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 34 MB | 76 MB |
| Age rating | 4+ | 4+ |
| Developer | Dr. Garbers Softwareentwicklung | Fabian Metzger |
In-app purchases
Guidonian Hand
No in-app purchases
rapDo!
No in-app purchases









