WorldSounding vs Scouter Synth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WorldSounding
Explore and manipulate unique musical compositions. Play individual pieces, layer multiple sounds simultaneously, and shape sonic textures. Record your creations or use ambient sounds to influence the performance.
- Layer multiple musical pieces
- Synthesize and stretch sounds
- Real-time performance shaping
- Ambient sound analysis for pitch reference
- High-quality audio recording (WAV)
- Bluetooth and AirPlay audio output
- Dual Display mode
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WorldSounding gathers the music of the WorldMusic series into one app. Listen to each piece, play it with your fingers, and layer several at once. Sounds are synthesized on the spot or stretched from their material, so the performance never repeats. - WorldTuning — an eternal drone that begins with an orchestra tuning up. - WorldShifting — timeless minimal music in which repeating short patterns drift apart and overlap. - WorldWandering — infinite granular music that stretches sound to extremes and repeats short fragments. - WorldRushing — harsh music in which a beautiful melody drifts through one mass of layered, distorted roar. The bar at the top shows every piece and whether it is sounding. Tap a name to bring it to the screen, where you can also change the performance. A piece keeps playing when it is not on screen, and there is no limit on how many can sound together. Turn on Dual Display to show two pieces at once. You can also fit layered pieces together. Each piece can match a shared tempo and a shared pitch, and follow the chord tones of another piece. Every piece switches these on and off on its own, and notes that do not agree can bring surprises. Each piece keeps its own screen: touch the picture to travel, shape the sound in the Sound sheet, and let it wander on its own. Send the sound to Bluetooth speakers, AirPlay speakers such as HomePod, or a USB audio interface, and control everything from Control Center and the Lock Screen. Record exactly what you hear, every piece together, as a 48 kHz / 24-bit WAV file. The built-in microphone can also listen to the sounds around you. The app analyzes them and makes the result the reference pitch of the performance. The sound is analyzed on this device: nothing is recorded, and nothing is sent. While Listening is on, AirPlay speakers cannot be chosen. WorldSounding is free with a banner ad, and every feature, including the Sound sheet and settings, is available. A piece you have not bought plays for three minutes each time you open the app. Each piece is a one-time in-app purchase that removes the limit for that piece, and buying any one removes the ad. The 4-Piece Set also lets you buy all four together.
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.
- 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
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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
Verdict
The clearest difference is in-app purchases: Scouter Synth at none against WorldSounding's 5. Scouter Synth also leads on ads (none vs shown). WorldSounding's advantage is update cadence (every 5 days vs every 4 weeks). On price, rating, ratings volume and device support 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. WorldSounding sells 5 one-off in-app purchases. Scouter Synth asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for WorldSounding against 5.0 for Scouter Synth. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
WorldSounding ships an update every 5 days, Scouter Synth every 4 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.
| Parameter | WorldSounding | Scouter Synth |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 5 days — better | Every 4 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Masayuki Akamatsu | Andrew Scott |
Customer experience
WorldSounding
Scouter Synth
In-app purchases
WorldSounding
- WorldRushing$2.99
- WorldShifting$2.99
- WorldWandering$2.99
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- WorldTuning$2.99
- 4-Piece Set$9.99
Scouter Synth
No in-app purchases
Questions
Is WorldSounding free?
Is Scouter Synth free?
Which has better reviews, WorldSounding or Scouter Synth?
Do WorldSounding or Scouter Synth have ads?
Which is updated more often, WorldSounding or Scouter Synth?
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