MIDI Magnet vs RollTab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MIDI Magnet
Transform your iPhone or iPad into a tactile control surface for MIDI hardware. Easily map and adjust every CC parameter with intuitive knobs and buttons, then save and recall presets for seamless sound design and live performance.
- Real-time CC parameter control
- Customizable knob and button layouts
- Save and recall presets
- Cloud sync for presets
- Bluetooth and USB MIDI support
- Custom device creation
- Parameter randomization and reset
Read full descriptionHide full description
MIDI Magnet — hands-on control for your MIDI hardware. Stop digging through tiny screens and cryptic menus. MIDI Magnet turns your iPhone or iPad into a control surface for your synths, drum machines, and effects units — every CC parameter laid out as a knob you can actually touch. EVERY PARAMETER AT YOUR FINGERTIPS Pick your device from a growing library of brands and models, and MIDI Magnet instantly maps its CC parameters to a clean, touch-friendly layout. Tweak filters, envelopes, LFOs, and effects in real time — values are sent to your hardware the moment you move a knob. CONNECT YOUR WAY Works over Bluetooth MIDI for fully wireless control, or plug in over USB. Connect your device and you're good to go — no drivers, no setup headaches. SAVE AND RECALL PRESETS Dial in a sound you love? Save it as a preset and recall it anytime — all parameter values and the MIDI channel are restored and sent to your hardware with a tap. Sign in to sync your presets to the cloud and keep them safe across all your devices. MAKE IT YOURS Reorder parameters with drag and drop to match your workflow • Organize controls into custom groups with their own colors • Switch any parameter between knob and button control • Edit parameter names, ranges, and CC numbers • Light and dark themes TOOLS FOR SOUND DESIGN Randomize all parameters for instant inspiration — lock the ones you want to keep • Reset to defaults with one tap • Send Program Change messages to switch patches on your hardware • Send all current values at once to bring your hardware in sync YOUR GEAR NOT LISTED? Create a custom device with your own parameter mappings — perfect for rare gear, DIY synths, or anything with a MIDI spec sheet. Whether you're shaping sounds in the studio or tweaking live on stage, MIDI Magnet puts your hardware's full potential one touch away.
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 rating: MIDI Magnet at 5.0 against RollTab's 2.0. MIDI Magnet also leads on iOS requirement (14.0 vs 18.0). On price, ratings volume, ads and in-app purchases 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.
MIDI Magnet holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | MIDI Magnet | RollTab |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 2.0 (1 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | — | Every 4 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 7 MB | 185 MB |
| Age rating | 4+ | 4+ |
| Developer | Morningstar Engineering | Simon Edwardsson |
In-app purchases
MIDI Magnet
No in-app purchases
RollTab
No in-app purchases








