Jazz Improviser vs RollTab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jazz Improviser
Read full descriptionHide full description
Create new melodies based on your chosen chord progressions and edit the results in the piano roll. Use the rhythm and melodic contour curves to shape the structure, movement, and variation of your phrases. Features: • Well-known jazz and blues chord progressions • Automatically generated melodies • Control over rhythm and melodic movement • Editable piano roll • Support for different numbers of measures and tempos • Random seeds for creating new variations • Instant playback of melody and harmony
RollTab
This app transforms your device into an AI-powered piano partner. It listens to your musical phrases and generates real-time continuations using an advanced on-device AI model. You can control various aspects of the AI's output and export your creations as MIDI files.
- AI piano accompaniment
- Real-time music generation
- MIDI keyboard integration
- Adjustable AI parameters
- Live piano-roll view
- MIDI file export
Read full descriptionHide full description
RollTab turns your iPhone or iPad into an AI piano partner. Connect a USB or Bluetooth MIDI keyboard, play a phrase, and pause. RollTab continues your performance in real time with a 125M-parameter music model running entirely on your device. • Automatic mode answers after you pause • Explicit mode lets you decide when to generate • Live piano-roll view separates your notes from the AI’s continuation • Adjust temperature, continuation length, timing, and pitch range • Pause, continue, start a new session, and export the result as a MIDI file • No account, cloud processing, or internet connection required A MIDI keyboard is required for live input. You can also generate from silence in Explicit mode. Created by Simon Edwardsson — simedw.com
Screenshots
Verdict
The clearest difference is update cadence: RollTab at every 4 days against Jazz Improviser's every 3 weeks. Jazz Improviser's advantage is iOS requirement (15.0 vs 18.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Jazz Improviser ships an update every 3 weeks, RollTab every 4 days. The most recent releases landed on November 10, 2026 and November 13, 2026 respectively.
| Parameter | Jazz Improviser | RollTab |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 64 MB | 185 MB |
| Age rating | 4+ | 4+ |
| Developer | Atte Tenkanen | Simon Edwardsson |
In-app purchases
Jazz Improviser
No in-app purchases
RollTab
No in-app purchases
Questions
Is Jazz Improviser free?
Is RollTab free?
Do Jazz Improviser or RollTab have ads?
Which is updated more often, Jazz Improviser or RollTab?
Other comparisons
