WorldSounding vs Sound With Bones
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.
Sound With Bones
Create unique musical instruments by drawing physical structures. Hear your creations sing, then manipulate their mass and stiffness to shape the sound. Record and edit performances, or export your creations as audio files.
- Draw physical instruments
- Shape sound by adjusting mass and stiffness
- Record and edit performances
- Export audio and editable workshops
- Two-handed play with damping and pinning
- Learn physics through sound experiments
- AUv3 instrument for music apps
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Draw a structure you can play. Hear it sing, then record how you change it while it rings. Sound With Bones is a physical modeling instrument built from your drawings. A sketch becomes connected joints whose mass and stiffness shape the sound. Pluck a joint, cut a ringing connection, then repair it and hear the structure change. HEAR YOUR DRAWING SING Tap Listen and your drawing plays a whole song, tuned from its own resonances. Change the shape and the same song sounds new. Soft Geometry, an original, and Twinkle, Twinkle are free. SHAPE SOUND BY LISTENING Choose a brighter or less bright sound. The Workshop proposes small changes to a joint's mass or a connection's stiffness. Compare each edit with the same strike, reference pitch, duration and listening level. Keep a version or return to your original. CHANGE THE INSTRUMENT AS IT PLAYS In Workshop > Perform, record the strikes, cuts and repairs you play. Keep the take as editable actions on a beat timeline. Move an action, adjust the tempo and replay it from the drawing captured at the start. A cut changes the sound already ringing. You can also arrange actions by hand. With Plus, export the performance as WAV with its editable workshop. MAKE A FAMILY OF RELATED SOUNDS Create soft, firm, edge and broken variations from one drawing. Edit the strike location, force, softness and connection cut, and hear each one. With Plus, export named 24-bit stereo WAV files at 48 kHz together with the workshop, drawing and recipes. PLAY WITH TWO HANDS Hold one joint while another finger plucks the shape. Damp removes energy where that joint moves. Pin constrains the held joint and changes its resonances. Release it to hear the original structure again. LEARN BY LISTENING Predict what lighter joints will do, hear the natural resonance change, then try an unfamiliar drawing. Isolate one vibration mode or listen to local damping. Save your prediction, measured result and both sounds. Reopen the exact comparison even after changing your current drawing. These experiments use the same physical model as your instrument. BRING YOUR DRAWINGS INTO A MUSIC APP The included AUv3 instrument responds to MIDI notes, velocity and sustain in compatible hosts. Open an exported drawing or workshop in the plug-in. Its drawing is saved with the host project. KEEP YOUR WORK Save instruments, recordings and workshop versions locally. Share editable drawings and workshops through Files. Export recordings as M4A, or import supported audio into your library. Imported recordings remain audio clips; they do not become physical instruments. SOUND WITH BONES PLUS Drawing, playing, cutting, recording, saving, sharing, Workshop comparisons, performances, learning and the AUv3 instrument are free. Plus adds: • 8 more songs, including Für Elise, Canon in D, Bach's Prelude in C and Gymnopédie No. 1 • 8 sculpted shapes: Ribcage, Wishbone, Shell, Bell, Harp, Kalimba, Star and Web • Recordings up to 10 minutes (free recordings stop at 1 minute) • 24-bit WAV export of sound families and Workshop performances • New songs and shapes as they are added Plus is available as a yearly subscription with a 7-day free trial, a monthly subscription, or a one-time lifetime purchase. Payment is charged to your Apple Account when you confirm, or when the free trial ends. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. No account or microphone access is required. Synthesis and recording run on your device. Synthesized sounds come from the drawing's physical model. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sound-with-bones.netlify.app/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Sound With Bones at none against WorldSounding's 5. Sound With Bones also leads on ads (none vs shown) and ratings volume (3 vs 1). On price, rating, update cadence and monetization model 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. Sound With Bones 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 Sound With Bones. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
WorldSounding ships an update every 5 days, Sound With Bones weekly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.
| Parameter | WorldSounding | Sound With Bones |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (3 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 5 days — better | Weekly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 11 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Masayuki Akamatsu | No Worries! Lifestyle, LLC |
Customer experience
WorldSounding
Sound With Bones
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
Sound With Bones
No in-app purchases
Questions
Is WorldSounding free?
Is Sound With Bones free?
Which has better reviews, WorldSounding or Sound With Bones?
Do WorldSounding or Sound With Bones have ads?
Which is updated more often, WorldSounding or Sound With Bones?
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