iImprov vs pttrN for drummers
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
pttrN for drummers
This app generates and plays an infinite variety of one-bar drum grooves in various time signatures. Customize snare placement, note density, and add a virtual bass player for a complete rhythmic experience.
- Random pattern generation
- Multiple time signatures (4/4, 3/4, 5/4, 12/8, 7/8)
- Customizable snare placement
- Adjustable note density
- Virtual bass player
- Auto-change for continuous grooves
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« pttrN for drummers » is a random pattern generator. It creates and plays an infinite number of one bar grooves in 4/4, 3/4, 5/4, 12/8 and 7/8. Choose your Hi-Hat figure, pttrN takes care of everything else ! Settings : - You can add a snare drum on 2 and 4, or 3. In « FREE » mode, the snare placement is random. - You can choose the maximum number of notes in a row (2 by default). - Choose the level : « EASY » mode generates 8th note grooves. MEDIUM, NORMAL and HARD modes generate 16th note grooves with different note density in one bar. (« NORMAL » means that the probability for a snare, a kick or a silence is equal). PttrN plays the patterns, and for even more FUN, you can have a virtual bass player ! Set your own mix between the metronome, the drums sound and the bass. Don’t stop drumming : Use the AUTO-CHANGE and set the number of bars before pttrN generates a new groove ! Let’s groove !!
Screenshots
Verdict
The clearest difference is rating: pttrN for drummers at 5.0 against iImprov's 3.0. pttrN for drummers also leads on update cadence (every 7 months vs every 28 months) and review sentiment (83% vs 68%). iImprov's advantage is price ($3.99 vs $4.99). On ratings volume, 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
iImprov costs $3.99 and pttrN for drummers $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
pttrN for drummers holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 68% of iImprov's written reviews are positive against 83% of pttrN for drummers's.
iImprov ships an update every 28 months, pttrN for drummers every 7 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | iImprov | pttrN for drummers |
|---|---|---|
| Price | $3.99 — better | $4.99 |
| Rating | 3.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 68.2% of reviews | 83.3% of reviews — better |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 28 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12 — better |
| Further details — not scored | ||
| Size | 8 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Jazz Apps Mobile LLC | Didier Ottaviani |
Customer experience
iImprov
pttrN for drummers
In-app purchases
iImprov
No in-app purchases
pttrN for drummers
No in-app purchases









