Comparison

iImprov vs Music Theory Rhythms

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

Head to head
About

iImprov

This app helps jazz musicians of all levels master modal improvisation. It offers detailed explanations of theory, scale relationships, and practical exercises with audio and JAM-A-longs in various keys and styles. Tailored for modal tunes, it covers minor modal, 7 sus 4, and Major 7#4 progressions.

Highlights
  • Modal improvisation theory
  • Scale and chord relation explanations
  • Pentatonic scale usage
  • Audio and visual scale examples
  • Interactive JAM-A-longs
  • Adjustable tempo and instrument balance
  • Transposition selection
Features
Read full description

iImprov-Modal is the 2nd release from Jazz Apps Mobile LLC. It is part of a series created for jazz musicians of all levels to help them take on specific challenges that any improvising musician will encounter. Each one contains a full explanation of all the concepts and theory involved as well as written and audio examples and exercises. Each app contains JAM-A-longs in all keys with adjustable tempo and control of instrument balance. Each iImprov app also allows you to select the correct transposition for your instrument. iImprov-Modal specifically provides the tools for confidently playing over modal tunes. The main focus of the app is playing over minor modal tunes, however we have also covered playing over 7 sus 4 modal tunes and Major 7#4 tunes. Exercises and JAM-A-longs specific to each of these types of tunes are included. Features- Full explanation of the concepts involved. Detailed theory of note to chord relations and use of modal scales. Detailed theory of how to use pentatonic scales, including how to play “outside.” Audio and visual representation of the related scales. Audio playback of the scales played over the appropriate chords. Exercises that include live audio examples from saxophonist Tony Bray. JAM-A-longs for Minor Modal (Swing and Funk). JAM-A-longs for 7 sus 4. JAM-A-longs for Major 7#4. Each JAM-A-long was recorded individually in order to give variation for each key. Mixer control for the JAM-A-Long instruments. Tempo control for each JAM-A-long. Unlimited JAM-A-long loop length.

About

Music Theory Rhythms

Enhance rhythmic and polyrhythmic skills with customizable exercises. Practice hand independence and improve sight-reading with adjustable parameters. Save and print detailed performance results.

Highlights
  • Rhythmic and polyrhythmic skill development
  • Hand independence exercises
  • Customizable time signatures and measures
  • Adjustable note/rest values
  • Tempo control with accuracy adjustment
  • Grade Book for saving and printing results
Read full description

Teachers, students and professional musicians: Work on your rhythmic and polyrhythmic skills. Develop better hand independence with two lines of rhythms. From very simple to nearly impossible. Sight reading rhythms won't be a problem anymore. Includes a 'Grade Book' list of all saved results that you can print or send. Customize: • Time signatures: 2/4, 3/4, 4/4 or 5/4. • Number of measures: 4 to 16. • One or two lines of rhythms. • One, two, or three pitches per line. • With or without rests. • Any combination of note/rest values you want: Whole, Half, Quarter, Eighth, Sixteenth, Dotted Half, Dotted Quarter, Dotted Eighth, Triplet Half, Triplet Quarter, and Triplet Eighths. • Exclude grading note durations to better test percussionists or to focus on accuracy alone. • Listen to the rhythm before and after you attempt playing it. • Tempo 30 to 150 bpm. The required accuracy of attacks and sustains changes with the tempo selected, so if you slow down the rhythm, you need to be more accurate. Likewise, faster tempos will give you a bigger 'window' but it'll be going by faster. • On/Off scrolling line of current location. The Grade Book is filterable by name. Grades include the name, date and time the quiz was taken, all relevant settings (note values included, rests, length, etc.), and score (percentage and letter grade).

Screenshots

iImprov4 screens

Verdict

The call

The clearest difference is rating: Music Theory Rhythms at 5.0 against iImprov's 3.0. Music Theory Rhythms also leads on review sentiment (80% vs 68%). iImprov's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 26.0). On price, ratings volume, update cadence and ads 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

iImprov costs $3.99 and Music Theory Rhythms $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Music Theory Rhythms holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 68% of iImprov's written reviews are positive against 80% of Music Theory Rhythms's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 28 months. The most recent releases landed on October 28, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 6 level
iImprov versus Music Theory Rhythms: the parameters behind the verdict, then further details
ParameteriImprovMusic Theory Rhythms
Price$3.99$3.99
Rating3.0 (2 ratings)5.0 (2 ratings) — better
Positive reviews68.2% of reviews80.0% of reviews — better
Number of ratings22
Update frequencyEvery 28 monthsEvery 28 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS15.6 — better26.0
Further details — not scored
Size8 MB40 MB
Age rating4+4+
DeveloperJazz Apps Mobile LLCPatrick Q. Kelly

Customer experience

iImprov

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews22 reviews
Positive68.2%
Neutral4.5%
Negative27.3%

Music Theory Rhythms

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

None

iImprov

No in-app purchases

None

Music Theory Rhythms

No in-app purchases

Questions

Is iImprov free?
iImprov costs $3.99, with no in-app purchases.
Is Music Theory Rhythms free?
Music Theory Rhythms costs $3.99, with no in-app purchases.
Which has better reviews, iImprov or Music Theory Rhythms?
Music Theory Rhythms is rated higher. iImprov averages 3.0 out of 5 from 2 ratings, while Music Theory Rhythms averages 5.0 from 2 ratings.
Do iImprov or Music Theory Rhythms have ads?
Neither iImprov nor Music Theory Rhythms shows ads.
Which is updated more often, iImprov or Music Theory Rhythms?
iImprov ships an update every 28 months, and Music Theory Rhythms every 28 months. Most recently, iImprov was updated on October 28, 2026 and Music Theory Rhythms on October 5, 2026.

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