Comparison

Digitron Synthesizer vs Sound With Bones

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

Head to head
About

Digitron Synthesizer

Create complex soundscapes and multi-track sequences with this virtual analog synthesizer. Experiment with hands-on controls, track effects, and waveform visualization. Ideal for quick sound design and modular-style workflows.

Highlights
  • Pocket Operator synchronization
  • MIDI keyboard and CC controller support
  • Audio Unit v3 (AUv3) compatibility
  • Track and master effects
  • Built-in audio recorder and editor
  • Oscilloscope waveform visualization
  • Haptic feedback on controls
Features
Read full description

• Pocket Operator synchronization • MIDI keyboard support • MIDI CC controller support • Audio Unit v3 (AUv3) support • Track and master effects • XY controls • Mixer with individual track levels and panning • Built-in audio recorder and editor • Oscilloscope for waveform visualization • Haptic feedback on potentiometer controls • Interface adapted for iPhone and iPad Digitron is designed for quick experimentation, from simple synth patches to multi-track sequences and modular-style sound design. Its hands-on approach to synthesis takes inspiration from compact analog instruments and modular synth workflows such as the Korg Monotron, Moog Mavis and Pocket Operator ecosystem. If you have feedback or ideas for future features, feel free to get in touch. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

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.

Highlights
  • 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
Features
Read full description

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

Digitron Synthesizer4 screens
Sound With Bones4 screens

Verdict

The call

The clearest difference is rating: Sound With Bones at 5.0 against Digitron Synthesizer's 4.0. Sound With Bones also leads on in-app purchases (none vs 3) and ratings volume (3 vs 1). Digitron Synthesizer's advantage is update cadence (every 4 days vs weekly) and iOS requirement (16.0 vs 18.0). On price, review sentiment, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Digitron Synthesizer sells 3 in-app purchases, starting at $0.99 per month. Sound With Bones asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sound With Bones holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Digitron Synthesizer ships an update every 4 days, Sound With Bones weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Digitron Synthesizer versus Sound With Bones: the parameters behind the verdict, then further details
ParameterDigitron SynthesizerSound With Bones
PriceFreeFree
Rating4.0 (1 ratings)5.0 (3 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings13 — better
Update frequencyEvery 4 days — betterWeekly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better18.0
Further details — not scored
Size119 MB5 MB
Age rating4+4+
DeveloperEvgenii PetrovNo Worries! Lifestyle, LLC

Customer experience

Digitron Synthesizer

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Sound With Bones

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

In-app purchases

3 purchases

Digitron Synthesizer

Subscriptions2
  • Pro Subscription Month$0.991 Month
  • Pro Subscription Year$7.991 Year
One-time1
  • Pro Unlock$9.99
None

Sound With Bones

No in-app purchases

Questions

Is Digitron Synthesizer free?
Digitron Synthesizer is free to download, with in-app purchases available.
Is Sound With Bones free?
Sound With Bones is free to download, with no in-app purchases.
Which has better reviews, Digitron Synthesizer or Sound With Bones?
Sound With Bones is rated higher. Digitron Synthesizer averages 4.0 out of 5 from 1 ratings, while Sound With Bones averages 5.0 from 3 ratings.
Do Digitron Synthesizer or Sound With Bones have ads?
Neither Digitron Synthesizer nor Sound With Bones shows ads.
Which is updated more often, Digitron Synthesizer or Sound With Bones?
Digitron Synthesizer ships an update every 4 days, and Sound With Bones weekly. Most recently, Digitron Synthesizer was updated on October 30, 2026 and Sound With Bones on October 31, 2026.

Other comparisons