Comparison

iImprov vs AloneQuartet Prepaid

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

AloneQuartet Prepaid

Easily create multi-panel videos by recording footage in up to four separate sections. Switch cameras, overlay recordings, and adjust individual audio levels for each panel. Save and import videos from your camera roll with no time limits.

Highlights
  • Record in 4 separate panels
  • Switch between front/rear cameras
  • Overlay new recordings
  • Import/export videos
  • Individual volume control
  • Video trimming
  • Built-in metronome
Features
Read full description

This is the prepaid version of the app with the same name. Please use this version if you need prepayment for Apple School Manager, etc. AloneQuartet is an app that makes it super easy to create 4-panel split videos. ◆Features - Record videos in each of the 4 panels using the camera - Switch between front and rear cameras - Record new videos while watching previously recorded panels - Save recorded videos to camera roll - Import videos from camera roll - No time limit for long recordings - Real-time microphone feedback during recording - Bluetooth headphone and speaker support - AirPlay device compatibility - Built-in click function (simple metronome) - iPad large screen support - Individual volume control for each panel - Video trim function to set start/end times ◆How to use ◆◆Preview Tap any of the 4 panels to display camera preview. ◆◆Camera switching Press CAMERA on the right to switch between front and rear cameras. ◆◆Recording Press REC on the right while in preview mode to start recording. ◆◆Overlay recording When you start recording, previously recorded panels will play back while the target panel records. ◆◆Playback Press PLAY on the right to start playback. ◆◆Stop Press STOP on the right to stop recording/playback. ◆◆Mix Press MIX on the right to go to the MIX screen. Select the mix format and press preview or save to mix. ◆◆Volume control Adjust individual volume for each panel with volume sliders. Create balanced audio during mixing. ◆◆Video trim Set start/end times for recorded videos. Extract only needed parts for precise editing. ◆◆Data saving Save data to Photos app. Press the button at the top right of a panel and select save to Photos. ◆◆Data loading From an empty panel, press the top right button and select load from Photos. ◆◆Metronome function From SETTINGS, turn on click sound and set volume, tempo, etc. Click sound starts when recording begins. ◆◆Audio feedback function From SETTINGS, turn on audio feedback and set volume, etc. You can hear input audio through headphones. ◆◆iPad support Supports iPad sizes with wider, more visible screens. Also supports iPad Pro multiple screens. ◆◆Multi-language support Supports Japanese, English, Chinese (Simplified/Traditional), Korean, French, and Spanish. Thank you for reading. We plan to add more convenient features in the future, so please look forward to it.

Screenshots

iImprov4 screens
AloneQuartet Prepaid4 screens

Verdict

The call

The clearest difference is review sentiment: iImprov at 71% against AloneQuartet Prepaid's 0%. iImprov also leads on rating (3.0 vs 2.0). AloneQuartet Prepaid's advantage is update cadence (every 3 weeks vs every 28 months) and price ($2.99 vs $3.99). 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

CostPrice · In-app purchases · Ads · Monetization

iImprov costs $3.99 and AloneQuartet Prepaid $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

iImprov holds the better App Store score, 3.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 71% of iImprov's written reviews are positive against 0% of AloneQuartet Prepaid's.

UpkeepUpdate frequency

iImprov ships an update every 28 months, AloneQuartet Prepaid every 3 weeks. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

Scorecard4 real differences · 6 level
iImprov versus AloneQuartet Prepaid: the parameters behind the verdict, then further details
ParameteriImprovAloneQuartet Prepaid
Price$3.99$2.99 — better
Rating3.0 (2 ratings) — better2.0 (1 ratings)
Positive reviews71.4% of reviews — better0.0% of reviews
Number of ratings2 — better1
Update frequencyEvery 28 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size8 MB3 MB
Age rating4+4+
DeveloperJazz Apps Mobile LLCNaoto Sasaki

Customer experience

iImprov

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews21 reviews
Positive71.4%
Neutral4.8%
Negative23.8%

AloneQuartet Prepaid

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

iImprov

No in-app purchases

None

AloneQuartet Prepaid

No in-app purchases

Questions

Is iImprov free?
iImprov costs $3.99, with no in-app purchases.
Is AloneQuartet Prepaid free?
AloneQuartet Prepaid costs $2.99, with no in-app purchases.
Which has better reviews, iImprov or AloneQuartet Prepaid?
iImprov is rated higher. iImprov averages 3.0 out of 5 from 2 ratings, while AloneQuartet Prepaid averages 2.0 from 1 ratings.
Do iImprov or AloneQuartet Prepaid have ads?
Neither iImprov nor AloneQuartet Prepaid shows ads.
Which is updated more often, iImprov or AloneQuartet Prepaid?
iImprov ships an update every 28 months, and AloneQuartet Prepaid every 3 weeks. Most recently, iImprov was updated on October 23, 2026 and AloneQuartet Prepaid on October 17, 2026.

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