Comparison

TEMPO vs KP Viewer

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

Head to head
About

TEMPO

Create beats and build songs with this pocket-sized sampler groovebox and mini DAW. It allows you to play, sample, and sequence music, then arrange your patterns into full songs.

Highlights
  • Sampler groovebox and mini DAW
  • 12 voices with modeled drums and samples
  • 64-step patterns with advanced shaping
  • Standalone Song Mode for arrangement
  • Audio track recording and import
  • AUv3 instrument compatibility
  • Stereo WAV and stem export
Features
Read full description

Make a beat. Build a song. TEMPO-1 is a sampler groovebox and a mini DAW in your pocket. Play, sample and sequence on iPhone and iPad, then turn your patterns into an arrangement with the new standalone Song Mode. BUILD THE GROOVE Play 12 voices with modeled drums and samples. Create patterns up to 64 steps and shape each hit with velocity, probability, microtiming, ratchets, conditions and pitch. Record pads or MIDI, add swing, and bring movement to your patterns with effects and automation. TURN PATTERNS INTO SONGS Bring saved Patterns straight into a timeline with up to eight Pattern/MIDI, Audio and Instrument tracks. Build sections, add markers and tempo changes, and use FILL to repeat whole clips into empty gaps. Keep reusable ideas in the Pattern Library and saved clip banks. RECORD, LAYER AND PLAY Record an Audio track from your microphone or a compatible connected interface. Trim takes, adjust gain and fades, and reuse phrases. Import compatible audio through the bottom Bank pattern chooser bar, then place it on a Song Audio track. Add separately installed compatible AUv3 instruments. SHAPE YOUR SOUND Record, import, edit and resample WAVs for the pads. Balance Song tracks with level, pan, mute and solo, then shape the mix with EQ, effects and track automation. TAKE THE IDEA FURTHER Export a stereo Song WAV or a mix with Song-track stems. Choose the entire Song, a loop or a selected time span, or share a Song project package. Pattern workflows retain loop WAV export, MIDI export and live WAV capture. CONNECT YOUR SETUP Use MIDI learn and external MIDI output, or run TEMPO-1's Pattern groovebox as an AUv3 in a compatible host. Gillespie Audio Built by a musician, for musicians.

About

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.

Highlights
  • Live performance display
  • Bank and Rig information
  • Rig name display
  • Effect status indicators
  • Automatic tuner
  • Dedicated stage display
Features
Read full description

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.

Screenshots

TEMPO4 screens
KP Viewer1 screens

Verdict

The call

The clearest difference is price: TEMPO at $9.99 against KP Viewer's $19.99. KP Viewer's advantage is rating (5.0 vs 4.3) and iOS requirement (15.0 vs 17.0). On review sentiment, ratings volume, update cadence and ads 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

TEMPO costs $9.99 and KP Viewer $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

KP Viewer holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

Scorecard3 real differences · 7 level
TEMPO versus KP Viewer: the parameters behind the verdict, then further details
ParameterTEMPOKP Viewer
Price$9.99 — better$19.99
Rating4.3 (3 ratings)5.0 (3 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings33
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size354 MB3 MB
Age rating4+4+
DeveloperRichard GillespieDEREK BERNARD

Customer experience

TEMPO

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

KP Viewer

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

TEMPO

No in-app purchases

None

KP Viewer

No in-app purchases

Questions

Is TEMPO free?
TEMPO costs $9.99, with no in-app purchases.
Is KP Viewer free?
KP Viewer costs $19.99, with no in-app purchases.
Which has better reviews, TEMPO or KP Viewer?
KP Viewer is rated higher. TEMPO averages 4.3 out of 5 from 3 ratings, while KP Viewer averages 5.0 from 3 ratings.
Do TEMPO or KP Viewer have ads?
Neither TEMPO nor KP Viewer shows ads.
Which is updated more often, TEMPO or KP Viewer?
TEMPO ships an update every 4 days, and KP Viewer every 4 days. Most recently, TEMPO was updated on November 5, 2026 and KP Viewer on November 6, 2026.

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