Comparison

Robot Butter vs Bungee

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

Head to head
About

Robot Butter

This audio effect app creates dynamic soundscapes by blending animated modulation, adaptive reverb, and digital textures. It offers a fast, playable interface with direct control over key parameters and tempo-synced movement for evolving sound design.

Highlights
  • AUv3 audio effect for iPhone, iPad, and macOS
  • Animated modulation engine
  • Adaptive reverb stage
  • Tempo-synced LFO matrix
  • Digital texture effects
  • Built-in user manual
  • Factory and user presets
Read full description

Robot Butter is a creative AUv3 audio effect for compatible hosts on iOS & iPadOS. It blends animated modulation, adaptive reverb, tempo-aware movement, and digital texture into one fast, playable interface. At the core is the Robot engine, where Actuator, Viscosity, and Controller create the main motion and character of the signal. That signal then feeds Butter, an adaptive reverb stage designed to intelligently stay musical while responding to the effective movement of the Robot section. The result can move from focused width and pulse to washed ambience, strange motion, and unstable experimental color. The Chipset section extends the sound with a built-in assignable LFO matrix and a post-reverb System Bus reduction stage. Run the LFO freely in Hz or lock it to musical divisions for host-synced movement, then route it to key Robot or Butter controls for evolving motion. Add System Bus for subtle grain or push it harder for sharper, crushed digital edge. Robot Butter is designed to stay immediate. The interface gives you direct control over modulation, blend, depth, reverb shape, output mix, and motion timing without pushing you into a complicated modulation environment. A built-in user manual inside the standalone app includes overview pages, parameter explanations, quick-start guidance, glossary entries, MIDI notes, and troubleshooting help, with scrollable section pills that keep longer labels readable. Factory presets and user presets make it easy to jump from polished mix enhancement to stylized movement and aggressive sound design. Features: - Robot modulation engine with Actuator, Viscosity, Controller, and gain staging - Butter adaptive reverb with Churn, Emulsion, and Culture controls - Built-in LFO matrix with free or tempo-synced timing - Assignable LFO destinations across Robot and Butter parameters - System Bus sample-rate reduction stage for animated digital texture - Imaging modes including Mono, Wide, Ping, and Drift when stereo processing is available - Factory presets covering vocals, guitars, bass, keys, synths, drums, utility, and experimental categories - User preset save, recall, and delete support - Comprehensive built-in in-app user manual with quick-start, glossary, and troubleshooting sections - MIDI Learn, Host Learn support, and default CC mappings for hands-on control - Optional MIDI CC broadcast for compatible host-routing workflows - Host tempo sync with straight, dotted, and triplet divisions Use Robot Butter for vocal movement, guitar widening, synth pulse, drum bus animation, ambient wash design, or aggressive lo-fi modulation chains. It is built to move quickly from musical enhancement to animated destruction while keeping the workflow focused and playable.

About

Bungee

Features
Read full description

Bungee turns your iPhone and iPad into a musical instrument. Touch the screen to play a granular synthesizer, pluck glowing stripes like strings, and let sequences and drum beats play along. No music theory needed: every note fits the scale, so everything you play sounds musical. Made for ambient music, beats, sound design and live jamming, from your first touch to a full performance. PLAY THE PLATE Every finger sprays clouds of tiny grains of sound. Move left and right to travel through the sound, up and down to change the grain size, press harder for denser clouds and swipe fast for stutter bursts. Up to ten fingers play at once. PLUCK, HOLD AND STRETCH STRIPES The stripes behave like strings. Pluck them, hold them to sustain, stretch them until they snap, or bow them with a slow swipe. Hold one stripe with up to four fingers and pull: the note rises as it stretches. Each stripe plays a note of the scale, and you can draw your own. THROW THE NODES Nodes sit on the stage and play whenever a stripe touches them. Drag them into place, or flick one and it flies across the stage like a bullet, bouncing off the edges and plucking every stripe it crosses. TEN LOOKS, ONE INSTRUMENT Pick a theme and the whole app changes with it, from the stage to the menus: - Chrome: liquid-metal strings and mirror-polished shapes (the default) - Clay: soft white clay on black - Neo Brutalism: bold colour, thick outlines, hard shadows - Acid: poster neon, holographic shapes and acid smileys - Pixel: 8-bit stripes and sprites, with a pixelated sound to match - Op Art: hairline stripes on a bending grid - Thermal: a heat camera where every pluck glows white-hot - Glacier: false-colour satellite maps - Orbit: planets gliding along luminous orbits - Bubble: liquid bubbles on cream Your home-screen icon can follow the theme too. 56 READY-TO-PLAY INSTRUMENTS Every template is a complete instrument with its own sound, stripes, effects and sequence, laid out on shelves: Techniques, Ambient, Melodic, Beats, Drums and Glitch. Long-press any template to preview it or star it. Or start a New project on an empty stage. LEARN IN NINE STEPS The guided tour shows each move on the stage, waits for you to try it and moves on: playing, swiping, the sequence, drawing stripes and working with nodes. DRUM MACHINES BUILT IN Ten drum templates play real beats: footwork, house, boom bap, bongos, metal, wood, chiptune, IDM clicks, water drums and half-time trap. Play along on the stripes. SOUND NODES AND SAMPLES Drop sample, synth, noise and drone nodes on the stage and play them by holding or dragging, each with its own volume. Choose from 13 built-in samples (kalimba, felt piano, Rhodes chords, tape choir, rain, birds, shortwave radio and more), or import your own audio from Files: WAV, MP3, M4A, AIFF, FLAC and OGG. SEQUENCER Pick a pattern and a tempo, or open Advanced for the step grid, Euclidean and Turing patterns, swing and direction. Sequences drive the notes, move nodes and animate the stage in time with the music. EFFECTS AND MIXER Shape your sound with reverb, delay, phaser and drive, and balance everything in a touch-friendly mixer. MIDI, AUV3 AND ABLETON LINK - Use Bungee as an AUv3 instrument inside your favourite host app - Connect a MIDI controller and it maps itself: Korg nanoKONTROL2, Novation Launch Control XL, Launchkey Mini and more, plus MIDI learn for anything else - Sync the tempo with other apps and devices over Ableton Link MAKE IT YOURS - Save projects and your own templates, and share them - A retro terminal view that shows every event as you play WHO IT'S FOR - Ambient, lo-fi and electronic musicians looking for new textures - Beatmakers who want a playful drum machine - Sound designers who want a hands-on granular synth - Beginners who want to make music without learning an instrument Everything is generated live on your device. No account, no sign-up, no subscription. Touch the screen and start playing.

Screenshots

Robot Butter4 screens
Bungee4 screens

Verdict

The call

The clearest difference is update cadence: Bungee at every 5 days against Robot Butter's monthly. Bungee also leads on price ($9.99 vs $14.99). Robot Butter's advantage is device support (4 vs 2). On ads, in-app purchases and iOS requirement 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

Robot Butter costs $14.99 and Bungee $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Robot Butter ships an update monthly, Bungee every 5 days. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.

Scorecard3 real differences · 7 level
Robot Butter versus Bungee: the parameters behind the verdict, then further details
ParameterRobot ButterBungee
Price$14.99$9.99 — better
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyMonthlyEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, Mac, Vision Pro — betteriPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size7 MB50 MB
Age rating4+4+
DeveloperChristian ThompsonIbrahim Sefa Tuna

In-app purchases

None

Robot Butter

No in-app purchases

None

Bungee

No in-app purchases

Questions

Is Robot Butter free?
Robot Butter costs $14.99, with no in-app purchases.
Is Bungee free?
Bungee costs $9.99, with no in-app purchases.
Do Robot Butter or Bungee have ads?
Neither Robot Butter nor Bungee shows ads.
Which is updated more often, Robot Butter or Bungee?
Robot Butter ships an update monthly, and Bungee every 5 days. Most recently, Robot Butter was updated on October 17, 2026 and Bungee on October 13, 2026.

Other comparisons