iClef vs Music Theory 101
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iClef
Learn to identify and practice fundamental music notation skills across various clefs. This tool is designed to accelerate learning for students and sight-readers, helping to differentiate pitches on the stave.
- Learn treble and bass clefs
- Practice less common clefs
- Improve pitch differentiation
- Accelerate notation skills
- Optimize learning process
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We created iClef for our students to accelerate and optimize the learning process. iClef helps you learn and practice fundamental notation skills. For sight-readers, iClef is a great tool. Whether you want to learn treble or bass clef or interested in less commonly known clefs like Soprano, and Mezzo Soprano, iClef will help you train your eyes for seamless differentiation of various pitches on the stave. iClef has six clefs: Treble: Treble clef can also be called violin clef, or G clef, because the curl of the clef encircles the line where the note G falls. This clef is used for high-sounding instruments, such as violin, guitar, mandolin, flute, oboe, English horn, clarinet, saxophone, horn, and trumpet. The upper staff of keyboard instruments also use treble clef. Bass: Bass clef may also be referred to as F clef, because the note F is found on the line in between the two dots of the clef’s symbol. This clef is used for low-sounding instruments, such as bass guitar, cello, double bass, bassoon, trombone, tuba, and timpani. The bottom staff of keyboard instruments also use bass clef. Alto: Alto clef is often called viola clef, or sometimes C clef, since the middle line of the staff is the note C. The viola and the alto trombone are generally the only instruments that use this clef. Tenor: Tenor clef is not seen very often; it is occasionally used to represent the upper ranges of the cello, double bass, bassoon, and trombone. Its symbol is identical to the alto clef, but is moved higher on the staff. Mezzo Soprano: When the C-clef is placed on the second line of the stave, it is called the mezzo-soprano clef. The mezzo-soprano clef is specifically popular in Azerbaijan music. It is widely used in music sheets written for Tar. However, it is very rarely used in modern contexts. It was traditionally used for mezzo-soprano voices in operatic roles, notably by composer Claudio Monteverdi. This clef was also used for certain flute parts during renaissance, especially when doubling vocal lines. Soprano: When the C-clef is placed on the first line of the stave, it is called the soprano clef. This clef was used for the right hand of keyboard music (particularly in France; see Bauyn manuscript) as well as in vocal music for sopranos, and sometimes in high viola da gamba parts alongside the alto clef.
Music Theory 101
An interactive music theory training app covering classical fundamentals. It features 19 units with audio, exercises, and definitions, mirroring AP Music Theory exam curriculum. Practice skills with over 90 exercise types.
- Interactive music theory course
- 19 comprehensive units
- Audio samples and key definitions
- Skill practice exercises
- AP Music Theory exam curriculum
- Over 90 exercise types
- Aural recognition and dictation
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Welcome to a new, interactive music theory training app. We offer a comprehensive course presenting the fundamentals of classical music theory. Our course includes 19 interactive units with audio samples, interactive exercises, and key definitions. Alongside this, we offer a streamlined set of skill practice to test core knowledge. This app matches the curriculum of the AP Music Theory exam, which is designed to reflect a knowledge at the introductory college level. We're excited to help you learn. And if you’re a student… good luck with your upcoming exam! Lessons include: - Pitch and Rhythm - Scales, Meters, and Modes - Intervals, Triads, and Seventh Chords - Harmonic Progressions and Cadences - Four-Part Chorale Writing and Two-Part Counterpoint - Embelleshing Notes, Tonicization, and Melodic Techniques The app includes over 90 different exercise types, including aural recognition, melodic/harmonic dictation, and single, two-voice, and four-part composition. Our app is still new! Found something that needs to be fixed? Have an idea for what to add next? We'd love to hear from you as we build out the next features. There are buttons across the app for you to submit feedback or take a quick survey to share your thoughts.
Screenshots
Verdict
The clearest difference is price: Music Theory 101 at Free against iClef's $2.99. Music Theory 101 also leads on rating (4.8 vs 4.2) and update cadence (every 5 days vs every 2 months). iClef's advantage is review sentiment (100% vs 83%). 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
Music Theory 101 is free to download; iClef costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Music Theory 101 holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Music Theory 101 has 71 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 100% of iClef's written reviews are positive against 83% of Music Theory 101's, so the app with the better star average is not the one people write more warmly about.
iClef ships an update every 2 months, Music Theory 101 every 5 days. Both last shipped on November 3, 2026.
| Parameter | iClef | Music Theory 101 |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.2 (6 ratings) | 4.8 (71 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 82.9% of reviews |
| Number of ratings | 6 | 71 — better |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Anousha Kafashian | Poesie Inc |
Customer experience
iClef
Music Theory 101
In-app purchases
iClef
No in-app purchases
Music Theory 101
No in-app purchases








