Comparison

NullPerator vs Scouter Synth

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

Head to head
About

NullPerator

Create music with a focused tracker workflow on your iPhone and iPad. Compose patterns, arrange songs, and record samples using touch controls or a game controller. Projects are stored locally via the Files app.

Highlights
  • Tracker composition and playback
  • Touch controls
  • Game controller input
  • MIDI routing
  • Sample recording
  • Local project storage
Features
Read full description

NullPerator brings the focused tracker workflow to iPhone and iPad. Compose patterns, arrange songs, record samples, and play them back through a compact interface designed around the NullPerator hardware. Use the on-screen controls or connect a compatible game controller. Route MIDI, keep projects in the Files app, and continue working without an account. Features: • Tracker composition and playback • Touch controls optimized for portrait and landscape layouts • Compatible game controller input • MIDI routing, including supported Bluetooth MIDI devices • Sample recording through the current iOS audio input • Local project and sample storage through the Files app • iPhone and iPad support Your projects and settings stay on your device. NullPerator does not include advertising, analytics, or account tracking.

About

Scouter Synth

Create music with a retro handheld console interface. Compose melodies, add synth sounds or samples, and mix tracks with effects. Perform live with a touch-sensitive pad and punch-in effects.

Highlights
  • Eight-track music composition
  • Multiple synth voices and sample playback
  • On-board effects and mixing console
  • Performance pad for live parameter control
  • MIDI and Bluetooth controller support
  • Import and record audio samples
Features
Read full description

ScouterSynth is a music tracker built like a handheld console. Eight tracks, a D-pad, two buttons, and no menus — every operation is a chord you can play with your thumbs. WRITE Phrases of sixteen rows, chains of phrases, and a song made of chains. Write a bassline once and place it four times with different transposes; change it later and every one of those places changes with it. Phrases can be shorter than sixteen rows, so six-eight is as easy as four-four. SOUND A synth voice per track — saw, pulse with PWM, triangle and sine, through a resonant filter and an envelope — or a sample, played whole or sliced. Wavetables for the sounds a plain oscillator cannot make. Per-tick tables for automation that runs faster than a row. SAMPLE Import from anywhere on your phone, or record straight into a slot from the microphone. MP3, AAC, M4A, AIFF and WAV are all converted on the way in. Whatever you choose is copied into your project, so a saved song carries its audio with it. MIX Ten lanes on one screen — eight tracks and two send buses — with level, pan, mute and solo, and three effect slots on each: filter, bitcrush and a tempo-synced delay. Watch the desk as a set of numbers or as ten live traces. PLAY A performance pad wires any two parameters to an X and a Y axis and moves every track at once. A grid of twelve pads holds six punch-in effects — an octave down, tape slow, a stutter, a bitcrush, a high pass and a low pass — held rather than latched, so nothing can be left on by accident, and six one-shot samples to fire over the top. SEE A radar sweep that reads the mix by frequency, a scope on the output, and six palettes to put it all in. INTEGRATE MIDI in and out with clock. A Bluetooth game controller, mapped button by button to whatever pad you own. Export the whole arrangement to a WAV. Songs, samples and exports all sit in the Files app where you can reach them. No accounts. No subscriptions. No network. The manual is inside the app — press SELECT and B on any screen.

Screenshots

NullPerator1 screens
Scouter Synth4 screens

Verdict

The call

The clearest difference is update cadence: NullPerator at daily against Scouter Synth's every 4 weeks. On price, rating, ratings volume 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for NullPerator against 5.0 for Scouter Synth. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

NullPerator ships an update daily, Scouter Synth every 4 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard1 real difference · 8 level
NullPerator versus Scouter Synth: the parameters behind the verdict, then further details
ParameterNullPeratorScouter Synth
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyDaily — betterEvery 4 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size3 MB7 MB
Age rating4+4+
Developer203 SystemsAndrew Scott

In-app purchases

None

NullPerator

No in-app purchases

None

Scouter Synth

No in-app purchases

Questions

Is NullPerator free?
NullPerator is free to download, with no in-app purchases.
Is Scouter Synth free?
Scouter Synth is free to download, with no in-app purchases.
Which has better reviews, NullPerator or Scouter Synth?
NullPerator and Scouter Synth are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do NullPerator or Scouter Synth have ads?
Neither NullPerator nor Scouter Synth shows ads.
Which is updated more often, NullPerator or Scouter Synth?
NullPerator ships an update daily, and Scouter Synth every 4 weeks. Most recently, NullPerator was updated on October 26, 2026 and Scouter Synth on October 24, 2026.

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