Blip Box — Drum Synth 4+

Lean, mean noise machine

Sketch Audio, LLC

    • $7.99


Blip Box is a sixteen voice drum synthesizer that may look nice but can sound mean. Blip Box takes inspiration from a variety of synths, both analog and digital. We pulled together all the things we love about drum synthesis: complex audio rate modulation, snappy envelopes, harsh effects; and put them together in a compact, touch-friendly package. The result is a truly unique digital sound engine that has taken on a life of its own.

Whatever you do, don’t have fun with it!

- Focused, fun, and characterful synth engine
- Touch-first design, almost the entire screen is part of a control
- Runs standalone or as AUv3 plug-in (in compatible host)
- Universal purchase on Apple platforms: runs on iPhone, iPad, and Mac
- Presets synced across your devices via iCloud
- Hook up a MIDI controller to play with a keyboard (optional)

- Pure synthesis engine, no samples
- Complex digital oscillator with two-way frequency modulation
- White noise source
- Two snappy AD envelopes with variable shape
- Unique mix control for pure oscillator sound or ring mod mayhem
- “Choose-your-own-adventure” effect: analog (ish) wavefolder or digital degradation
- State variable filter for tone shaping
- Envelopes can be routed to modulate oscillator shape, pitch, or filter cutoff
- Mix to filter cutoff modulation available for crispy filter FM
- Velocity responsive, either in traditional level (gain) mode or brightness mode
- Multi-out mode available when running in AUv3 mode
- Master tune for keeping tonal drum sounds in tune with your song
- Includes 13 inventive and usable factory kits to get you started making music

Known compatible DAWS:
- Ableton Live (11.2+)
- Logic Pro
- Reaper

Check out our YouTube:
Read the manuals:

What’s New

Version 1.0.2

New in version 1.0.2:
- Add a document picker to the preset manager for importing presets directly from Blip Box.
- Enable opening presets from the Files app.
- Fix some manual typos.

Ratings and Reviews

Forever this time ,


Awesome percussion synth that works great for making unique drums. The interface is very clean and easy to understand. I love how quickly I can put together a usable kit in it.

Developer Response ,

Thanks for taking the time to leave a review! Glad you’re enjoying Blip Box.

munchero ryan ,

Machinedrum for iOS

Soundshaping enthusiasts dream. Great app, thank you for the universal purchase working on all platforms. I wanted to suggest two things: 1) the ability to lock the pad so that the menu stops popping up while playing. 2) in that locked mode, allow “legato” style playing, by that I only mean that you can slide your finger between pads and trigger them without lifting your finger. This is one of the killer features you can only do on a touchscreen, so that would be awesome to take advantage of!

Developer Response ,

Thanks for the review! We will keep these suggestions in mind for future updates.

mrdogheadSHoGoAT ,


As advertised, this inexpensive drum synthesizer combines plenty of percussion-design punch in a straightforward interface, at a fair price. What's not to love?

Developer Response ,

Thanks for the review! Glad you're liking BLIP.

App Privacy

The developer, Sketch Audio, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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