Comparison

Music Theory Basics vs 5ths Machine

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Music Theory Basics

Learn and test your knowledge of music theory concepts including notes, key signatures, intervals, chords, and rhythms. Save and print your quiz results with a built-in grade book.

Highlights
  • Tests notes, key signatures, intervals, chords, and rhythms
  • Supports multiple clefs (Treble, Alto, Tenor, Bass)
  • Customizable quiz options
  • Detailed grade book for saved results
  • Printable and shareable results
Read full description

Music theory covering Notes (Notation / Piano), Key Signatures, Intervals, Chords, and Rhythms, that tests basic musicianship skills. Includes a 'Grade Book' list of all saved results that you can print or send. • All pitched quizzes support Treble, Alto, Tenor and Bass clefs. • Interval and chord roots can be random or user set for each question. • Set a specific number of questions or grade only the number answered. Notes module tests music notation and piano keyboard knowledge. Key Signatures covers major and minor keys. Set separate maximum number of sharps or flats for the quiz. Intervals includes simple intervals played harmonically, melodically up or down. Intervals covered are major, minor, diminished, augmented 2nds, 3rds, 6ths, 7ths, and diminished, perfect, and augmented 4ths, 5ths, and octaves. You can include or exclude diminished and augmented 2nds, 3rds, 6ths and 7ths. Chords include triads and seventh chords played harmonically, melodically up, down or broken. Triads are major, minor diminished and augmented. Seventh Chords are dim7, min7(b5), min7, min(maj7), dominant7, maj7, dominant7(#5), maj7(#5). Rhythms tests your rhythmic skills. - Customizable options include; up to 16 measures in 2/4, 3/4, 4/4 or 5/4, up to 3 pitches, include specific note/rest values, and exclude grading durations (for percussionists). - Included note/rest values: Whole, Half, Quarter, Eighth, Sixteenth, Dotted Half, Dotted Quarter, Dotted Eighth, Triplet Half, Triplet Quarter, and Triplet Eighth. The Grade Book is filterable by name. Grades include the name, date and time the quiz was taken, all relevant settings (clef, number of questions, etc.), and score (percentage and letter grade).

About

5ths Machine

Explore the theoretical intricacies of key signatures with an interactive quiz. Learn about the 12-position equal temperament system and discover how to identify keys with an unusual number of sharps. Understand music theory through a unique perspective.

Highlights
  • Key signature quiz
  • Equal temperament system explanation
  • Theoretical key signature exploration
  • Background information on music theory
  • Quiz tips and strategies
  • Chronology of music theory concepts
Features
Read full description

Think you know your key signatures cold? Answer this: which key has 41 sharps? The equal temperament system is a circle with 12 positions, just like a clock. And, just like on a clock, the hands keep going around and around forever. The key signature of 41 sharps is theoretically consistent with the Western diatonic system ― learn why, and learn how to find out what key it is. The Background Information and the Quiz Tips explain the system in detail, and Chronology puts it all in perspective. Enjoy the “Perpetual 5ths Machine Boogie” while key signatures you’ve never seen before pass by on parade. Then, buckle down and solve the Quiz questions. NOW you understand music theory the 5ths Machine way!

Screenshots

Music Theory Basics4 screens
5ths Machine4 screens

Verdict

The call

The clearest difference is rating: 5ths Machine at 5.0 against Music Theory Basics's 4.3. 5ths Machine also leads on price ($1.99 vs $3.99) and device support (3 vs 1). Music Theory Basics's advantage is ratings volume (6 vs 1). On update cadence, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Music Theory Basics costs $3.99 and 5ths Machine $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

5ths Machine holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Music Theory Basics has 6 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Music Theory Basics ships an update every 34 months, 5ths Machine every 24 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Music Theory Basics versus 5ths Machine: the parameters behind the verdict, then further details
ParameterMusic Theory Basics5ths Machine
Price$3.99$1.99 — better
Rating4.3 (6 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings6 — better1
Update frequencyEvery 34 monthsEvery 24 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS26.012.0 — better
Further details — not scored
Size48 MB18 MB
Age rating4+4+
DeveloperPatrick Q. KellyLucy Hudson

Customer experience

Music Theory Basics

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

5ths Machine

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Music Theory Basics

No in-app purchases

None

5ths Machine

No in-app purchases

Questions

Is Music Theory Basics free?
Music Theory Basics costs $3.99, with no in-app purchases.
Is 5ths Machine free?
5ths Machine costs $1.99, with no in-app purchases.
Which has better reviews, Music Theory Basics or 5ths Machine?
5ths Machine is rated higher. Music Theory Basics averages 4.3 out of 5 from 6 ratings, while 5ths Machine averages 5.0 from 1 ratings.
Do Music Theory Basics or 5ths Machine have ads?
Neither Music Theory Basics nor 5ths Machine shows ads.
Which is updated more often, Music Theory Basics or 5ths Machine?
Music Theory Basics ships an update every 34 months, and 5ths Machine every 24 months. Most recently, Music Theory Basics was updated on November 1, 2026 and 5ths Machine on November 3, 2026.

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