Comparison

MIDI Aid vs StajPilot

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

Head to head
About

MIDI Aid

Features
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MIDI Aid is a MIDI monitor: connect your MIDI devices and see every incoming event in one clean, technical view. Whether you are debugging a synth patch, checking a controller mapping, or just curious what your gear is sending, MIDI Aid shows you what is really happening on the wire. CAPTURE • Live event log with precise timestamps • Start, pause, and resume capturing at any time • Clear the log with one tap • Follow mode keeps the newest events in view UNDERSTAND • Every event decoded into plain language: notes with names and velocities, controllers with their standard names, program changes, aftertouch, pitch wheel, and more • Raw status and data bytes side by side with the decoded event • Hex or decimal display, your choice • Tap any event for a detail view including the full raw bytes FILTER • Focus on what matters: filter by device, event type, and MIDI channel • Channel events, system common events, and system real time events can be toggled individually • Mute noisy events like Timing Clock or Active Sensing with one tap DEVICES • Works with USB MIDI devices out of the box • Network MIDI sessions and Bluetooth MIDI devices set up at system level appear automatically MIDI Aid supports all 16 MIDI channels, running status, and System Exclusive messages. No account, no ads, no tracking. Your MIDI data never leaves your device.

About

StajPilot

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StajPilot is an independent performance display and wired USB MIDI controller for the KEMPER PROFILER Player and supported MK1/MK2 PROFILER models, including Stage, Head and Rack. Designed for live performance, StajPilot keeps essential rig information clearly visible while providing fast access to the controls you need on stage. FEATURES • Large landscape display optimized for stage visibility • Selectable Player, MK1 and MK2 device profiles • Performance and Browser layouts for MK1/MK2, including Performance slot names and inactive-slot indicators where available • Responsive wired USB MIDI connection • Most display information is driven by real-time MIDI streaming data • Two-way MIDI communication for many supported controls • StajPilot does not use continuous millisecond-interval polling to imitate real-time streaming. Features that genuinely require periodic polling remain disabled by default and can be enabled only when needed, avoiding unnecessary load on the PROFILER • Eight rig effect blocks with on/off status, detailed effect names and touch control • Fixed FX status and Touch/Always controls where supported; unavailable controls are disabled • Five Performance slots with bank navigation where supported, plus Browser navigation for MK1/MK2 • Rig name, amplifier information, gain level and tempo display • Optional Amp Gallery with images assigned to Song bank and slot positions • Pedal Morph support with morph level display • Needle and strobe tuner displays • Tap tempo and direct tempo entry • StajPilot's built-in Song Mode for creating and editing custom song, slot and sub names • Configurable bank limits and bank wrapping • Interactive demo mode for exploring the interface without connected hardware PHYSICALLY TESTED DEVICES • KEMPER PROFILER Player (LV3) • KEMPER PROFILER Stage MK1 USB CONNECTION Connect your iPhone or iPad to the USB-B port of a supported KEMPER PROFILER using a data-capable USB cable. A compatible USB OTG adapter can improve connection compatibility, but the quality of the adapter itself also matters. We strongly recommend both a short, high-quality data-capable USB cable and a high-quality, compatible adapter from reputable manufacturers. An adapter alone does not guarantee a stable connection; the cable, adapter and physical connector fit all matter. During testing with many cables and adapters, we encountered connection errors with a considerable number of combinations on iPhone and iPad. Symptoms included failure to recognize the device, incomplete rig or effect information, interrupted MIDI streaming and failed reconnection. A connection that works with another device may not be reliable with your iPhone or iPad. If information is missing or the connection is unstable, try a different short cable and compatible adapter. Insert all connectors firmly and avoid tension or sideways pressure on the plugs. Compatibility may also vary with connector orientation and connection order. StajPilot does not require an account, subscription or internet connection. COMPATIBILITY NOTICE StajPilot is an independent third-party application and is not affiliated with or endorsed by Kemper GmbH. Compatibility and proper operation with any KEMPER PROFILER model are not guaranteed. Changes to device hardware, firmware, communication protocols or operating systems may affect, limit or discontinue some or all functionality. Before relying on StajPilot at an important performance or event, thoroughly test your complete setup in advance, including your PROFILER, iPhone or iPad, cable, adapter and every function you plan to use. KEMPER and PROFILER are trademarks of Kemper GmbH. All trademarks belong to their respective owners.

Screenshots

MIDI Aid3 screens
StajPilot4 screens

Verdict

The call

The clearest difference is price: MIDI Aid at $0.99 against StajPilot's $29.99. StajPilot's advantage is update cadence (every 2 days vs every 35 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

MIDI Aid costs $0.99 and StajPilot $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

MIDI Aid ships an update every 35 months, StajPilot every 2 days. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

Scorecard2 real differences Ā· 4 level
MIDI Aid versus StajPilot: the parameters behind the verdict, then further details
ParameterMIDI AidStajPilot
Price$0.99 — better$29.99
Update frequencyEvery 35 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.015.0 — better
Further details — not scored
Size26 MB40 MB
Age rating4+4+
DeveloperTobias WissmuellerJONGWOONG AN

In-app purchases

None

MIDI Aid

No in-app purchases

None

StajPilot

No in-app purchases

Questions

Is MIDI Aid free?
MIDI Aid costs $0.99, with no in-app purchases.
Is StajPilot free?
StajPilot costs $29.99, with no in-app purchases.
Do MIDI Aid or StajPilot have ads?
Neither MIDI Aid nor StajPilot shows ads.
Which is updated more often, MIDI Aid or StajPilot?
MIDI Aid ships an update every 35 months, and StajPilot every 2 days. Most recently, MIDI Aid was updated on October 7, 2026 and StajPilot on October 15, 2026.

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