Drambo vs Koala FX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Drambo
This app offers a flexible sound design experience, allowing users to build beats, create synthesizers, and process audio with effects. Its innovative modular system simplifies connections and organization, making it suitable for both beginners and experienced musicians. It functions as a standalone application or a plugin within a DAW.
- Modular sound design
- Intuitive cable-less connections
- Advanced sequencer
- Standalone and AUv3 plugin
- Over 140 modules
- Polyphonic stereo processing
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"Drambo changes the face of iOS music apps." Cult of Mac Drambo is your all-in-one sound laboratory that adapts to your workflow: build beats as a groovebox, design synths, or transform audio with effects, standalone or inside your favorite DAW. At the core of Drambo is a fresh approach to modular design that makes creating with modules easy, fun, and accessible. Connections happen automatically as you add or move modules, so there are no messy cables to slow you down. The interface adapts to your workflow, generating modulation controls when you need them, and even lets modules contain other modules for perfect organization. You’re always free to override the automatic connections, but most of the time, you can just dive in, experiment, and shape sounds without getting tangled in wires. Use a deep and innovative sequencer to compose patterns and whole tracks, for production or live performance. Go beyond simple looping sequences with parameter locking, conditional step components, parameters automation and powerful scene morphing. Drambo works equally well as a self-contained standalone app or audio unit plugin with audio and MIDI connectivity as an AUV3 instrument, audio effect and MIDI effect. You can use Drambo as • A Complete Studio: Produce entire tracks and perform live in a self-contained, multitrack environment. • An Endless modular playground, that allows you to build, modify and store custom instruments and effects. For instance: build a custom synth, sample and resample, build a Theremin using a gyroscope module, or turn your table into a playable surface, by processing microphone input with physical modelling modules. • An Advanced MIDI Sequencer: Control hardware or AUv3 instruments. Generate custom MIDI CC messages or send modulation signals to physical modular synths via DC-coupled interfaces. • The Ultimate AUv3 Plugin: Load Drambo inside other DAWs as an instrument, audio effect, or MIDI processor. Replace dozens of standard plugins by building your own complex modular delays, reverbs, decimators, or modulators in seconds. • A Unified Audio-Visual Studio (Drambo Visual IAP): Arts united. Step into another realm of modular visual synthesis to build complex generative video art, or seamlessly patch your audio and visual engines together for deeply integrated performances. Features: • Polyphonic, stereo processing and audio-rate modulation. All signals are equal. Up to 16 voices per modular instrument rack. • Unique modular concept: cable-less, drag'n'drop, color coding dynamic interface, automatic connections, and customizable compact, rack views. • Directional flow makes Drambo routing and patching straightforward. Signal flows only left to right, so there are no instant feedback routings in Drambo. Delayed feedback is possible using certain modules. • Simple and clean interface, that scales to every size and device orientation • Over 140 modules available, such as: oscillators, samplers, physical modelling modules, LFOs, envelope generators, filters, audio effects, mixers, MIDI processors, sequencers and math functions. (Includes a macro oscillator based on the famous Eurorack Plaits module, with 24 synth engines) • Custom modular racks that can be nested, with presets at the track, rack, and module level. • Clip launcher / song arrager. • 16-tracks, polyphonic sequencer with parameter locks, automation and step components. 8 dedicated step sequence editor types, piano-roll, powerful automation designer with drawing modes and cubic Bezier curves. • Audio Units hosting ( standalone app only ) • Morph groups: you can morph many parameters using a single slider. • Available as a standalone app, AUv3 instrument, effect and MIDI effect. • MIDI and Ableton Link support Drambo is all about control. Control things that other apps don’t even give you access to. Visit the BeepStreet page for help and tutorials, and Patchstorage for community content.
Koala FX
This creative effects unit offers 16 intuitive, one-touch effects to easily transform your audio. Morph and twist tracks, sculpt synth sounds, or add lofi warmth. Save and crossfade between scenes for dynamic musical arrangements.
- 16 one-touch creative effects
- Intuitive instrument-like playability
- Save and crossfade between 8 scenes
- Rearrangeable effect order
- Automatable parameters
- Resizable UI
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*** IMPORTANT! Koala FX is an Audio Unit Effect plugin (AUv3) which requires a compatible host or DAW to work such as Garageband, Beat Maker 3, AUM etc *** *** Koala FX is the ultimate creative effects unit. It offers 16 one-touch effects that you can play intuitively like an instrument, allowing you to effortlessly morph and twist your track into something beautiful. It includes all your favourite mix effects from Koala Sampler, but refined and souped up to allow super smooth cuts and crossfades. Apply effects to your whole mix just to add some lofi warmth or to liven things up… or use it to sculpt synth sounds to blend in with the rest. * Save up to 8 scenes per preset, so you can cut between them in time with the music * Smoothly crossfade between scenes with a giant 8-way X-Y pad. * Rearrange the order of the effects by dragging them. * A togglable hold mode allows you to keep some effects engaged, and others off when you let go of them. * Fully automatable via your host (effects, volume, scene, XY pad) * UI is fully resizable, works great in any aspect ratio CRUSH Bitcrusher with transistor distortion PITCH Frequency domain pitch shifter COMB Super short smooth interpolating delay with gallons of feedback RING Modeled diode ring modulator REVERB Efficient schroeder topology reverb STUTTER Loops a fragment of sound coming into koala fx and loops it in time with the music GATE Noise gate with hysteresis FILTER Combined low and high pass analog modeled filter CUTTER Chops the signal to the beat REVERSE Delay effect that reverses parts of your sound in time to the music DUB Vari-speed analog style tape delay TEMPO DELAY Tempo synced delay TALKBOX Formant filter based on human vocal tract VIBROFLANGE Half-vibrato, half-flanger DIRTY Analog modeled valve distortion COMPRESSOR Hard knee opto-style compressor with a bit of If you’re having any issues with Koala FX please get in touch at https://www.elf-audio.com/contact.php
Screenshots
Verdict
The clearest difference is price: Koala FX at $3.99 against Drambo's $24.99. Koala FX also leads on in-app purchases (none vs 5) and chart position (#90 vs unranked). Drambo's advantage is update cadence (monthly vs every 34 months) and review sentiment (87% vs 66%). On ads 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
Drambo costs $24.99 and Koala FX $3.99 up front. Drambo sells 5 one-off in-app purchases. Koala FX asks for nothing beyond the download.
Drambo holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 325 and 76 respectively. Written reviews point the same way: 87% of Drambo's written reviews are positive against 66% of Koala FX's.
Drambo ships an update monthly, Koala FX every 34 months. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.
| Parameter | Drambo | Koala FX |
|---|---|---|
| Price | $24.99 | $3.99 — better |
| Rating | 4.8 (325 ratings) — better | 4.6 (76 ratings) |
| Positive reviews | 86.7% of reviews — better | 65.8% of reviews |
| Number of ratings | 325 — better | 76 |
| Update frequency | Monthly — better | Every 34 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Best chart rank | — | #90 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 144 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | BeepStreet | Mazbox Limited |
Customer experience
Drambo
Koala FX
Bugs and requests
Drambo
Reported bugs
3 issues- Audio cutting out after 5 minutes of use
- Presets and patches not loading properly
- Incompatibility with certain iOS devices
Requested features
5 requests- Stem/track export functionality
- MIDI CC learn and external control
- Ableton Link support
- More parameter control and modulation options
- Improved piano roll and sequencing tools
Koala FX
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Drambo
- Granular extension$4.99
- Waves extension$4.99
- Formants extension$4.99
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- DSP extensions 1$4.99
- Visual extension$14.99
Koala FX
No in-app purchases









