KP Viewer vs StajPilot
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KP Viewer
This app provides a clear, at-a-glance display for Kemper Profiler Player users during live performances. It shows current bank, rig name, effect status, morph status, and an automatic tuner, turning older devices into a dedicated stage display.
- Live performance display
- Bank and Rig information
- Rig name display
- Effect status indicators
- Automatic tuner
- Dedicated stage display
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BEFORE PURCHASING KP Viewer requires a Kemper Profiler Player or Profiler Stage and a direct USB connection. • Lightning iPhone or iPad: USB-B-to-Lightning cable • USB-C iPhone or iPad: USB-B-to-USB-C cable Connect the cable, allow the Kemper to power on completely, then open KP Viewer. The app will not function without a compatible Kemper device and cable. KP Viewer gives Kemper Profiler Player users a clear, easy-to-read display for live performance. Connect your iPhone or iPad to your Kemper Player and KP Viewer provides the information you need at a glance, without navigating through menus. KP Viewer displays: • Current Bank and Rig • Rig Name • Effect status for A, B, C, D, X, MOD, DLY, and REV • Morph status • Automatic tuner display The interface is designed to be simple, highly visible, and useful on stage, making an older iPhone or iPad a practical dedicated display for your Kemper Player. KP Viewer is an independent application and is not affiliated with or endorsed by Kemper GmbH.
StajPilot
Control and edit your KEMPER PROFILER amplifier with two distinct modes for performance and detailed parameter adjustments. Organize songs, manage effect presets, and utilize a custom tuning feature. Supports various KEMPER models for a streamlined music workflow.
- Performance display and controller (STAY MODE)
- Detailed parameter editing (PILOT MODE)
- Song organization and editing
- Customizable tuning profiles
- Tap tempo and direct tempo entry
- Bluetooth MIDI foot-controller support
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StajPilot brings two connected workflows to your KEMPER PROFILER: STAJ mode for performance and PILOT mode for editing. It is not just for Player. Supported device profiles include PROFILER Player and MK1/MK2 models such as Stage, Head/Toaster and Rack, with available controls adapted to your hardware and Player level. STAJ MODE: YOUR PERFORMANCE DISPLAY AND CONTROLLER See rig names, effect names and on/off states, bank/slot positions, amplifier information, gain, tempo and pedal Morph status in a clear landscape interface. Switch rigs and supported effects with touch controls. View Effect I-IV assignments and Player FX1/FX2 assignments on the corresponding effect blocks where supported. SONG MODE AND SONG EDITING Organize your own song names, slot labels and sub-labels with multilingual text and emoji support. Song Mode works with Player banks and the Performance slots of supported larger PROFILER models. Quickly choose a song from Song Select, or long-press a song to edit it directly. Manage amp-image assignments alongside your song data. Import and export local Song data, and use the companion web Song Editor on a larger screen. Song labels do not rename rigs on the PROFILER. STAGE 2: PILOT MODE Select an effect block, change its effect type and supported preset, and adjust detailed parameters using knobs, switches, selection lists, a focused slider and direct numeric entry where available. Edit supported RIG, INPUT, AMP, CABINET, OUTPUT and Fixed FX settings. Copy and paste FX settings between blocks and rigs. Save, rename and delete local user FX presets, and choose User or Factory preset sorting. Controls and effect availability follow the selected device and Player level. PILOT mode is unavailable in Browser mode on MK1/MK2. CUSTOM TUNING Use Standard tuning or three editable Custom Tuner profiles with individual E-A-D-G-B-E offsets from -15.0 to +15.0 cents. Rename your profiles and choose the one you need. Custom offsets apply to needle mode, with the standard note/cents reference available for comparison. Needle, decimal needle and strobe displays are available, along with a full-screen tuner option. MORE CONTROL Tap tempo, direct tempo entry, configurable bank limits, amp images and in-app information panels support everyday use. Optional Bluetooth MIDI foot-controller support includes the M-VAVE Chocolate controller and is separate from the wired PROFILER connection. A reserved app MIDI channel can keep app-specific commands from being forwarded to the PROFILER. BEFORE USING PILOT MODE Select the correct device type and Player level in Settings. To keep changes permanently, press STORE on the KEMPER itself. Calibration has been extensively checked and verification continues, but some displayed values may differ from the hardware. Read the in-app PILOT notice before editing. Synchronization combines incoming MIDI data with targeted requests to limit unnecessary traffic; it is not completely bidirectional, so avoid simultaneous editing on the PROFILER while using PILOT mode. CONNECTION AND COMPATIBILITY A compatible KEMPER PROFILER and a reliable USB MIDI data connection are required for hardware control. Supported functions vary by model, firmware and Player level. The app uses USB MIDI, not the proprietary Rig Manager protocol. Core USB functions require no account or subscription. Demo mode lets you explore the interface without hardware. Test your complete setup before an important performance. Hardware, firmware and operating-system changes may affect compatibility. StajPilot is an independent third-party app, not affiliated with or endorsed by Kemper GmbH. KEMPER and PROFILER are trademarks of Kemper GmbH.
Screenshots
Verdict
The clearest difference is price: KP Viewer at $19.99 against StajPilot's $29.99. On review sentiment, update cadence, 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
KP Viewer costs $19.99 and StajPilot $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 4 days. Both last shipped on November 6, 2026.
| Parameter | KP Viewer | StajPilot |
|---|---|---|
| Price | $19.99 — better | $29.99 |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 3 — better | — |
| Update frequency | Every 4 days | Every 4 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | DEREK BERNARD | JONGWOONG AN |
Customer experience
KP Viewer
StajPilot
In-app purchases
KP Viewer
No in-app purchases
StajPilot
No in-app purchases









