ElectroSpit›ElectroSpit› offers Talkbox Synth App

Talkbox Synth App is made by the same company that builds the ESX-1, so the app and the hardware are designed against each other. Its smooth-and-buzz control is wired to the ESX-1's poly and mono projectors, and ElectroSpit documents the app as the recommended starting point for new owners rather than leaving them to assemble a setup.

The thirty-key grid and the Jam Stack lower the skill floor for playing talkbox lines, which matters because the technique traditionally demands precise instrumental control. Competing iOS talkbox and vocal-synth apps address the effect from outside the hardware, without a maker's own projector routing or a first-party user guide to work from.

Talkbox Synth App reached the App Store on 28 December 2018, the release date its version history records for version 1.0. ElectroSpit built it around its own ESX-1 hardware, which the company shipped as a tubeless replacement for the tube-and-amplifier talkbox rigs that had defined the effect since the 1970s.

The app has been maintained since that first release through a short series of updates: versions 1.10 in 2019 and 1.14 in 2020 added Bluetooth and wired MIDI input, and version 1.19 in December 2025 modernised the audio engine for iOS 15 and later. The listed version history is the record of that maintenance rather than a product line of successive models.

Talkbox Synth App sells to talkbox players rather than to the general music-app market, and its buyers are people who already own or intend to buy an ESX-1. ElectroSpit pairs the app with that hardware as its recommended starting point, so its demand tracks the wearable talkbox it was built to drive.

The wider iOS music category is crowded with synthesisers and vocal processors, but few of them address the talkbox technique directly and the app competes on that narrow footing. Talkbox itself remains a specialist effect with a long recording tradition, which keeps the addressable audience steady rather than fast-growing.

Talkbox Synth App is ElectroSpit's iOS instrument for playing talkbox on the company's ESX-1 wearable talkbox. It presents thirty chromatic keys as a touch grid on the phone screen, with on-screen pitch bend and modulation wheels, portamento and glide controls, and a Jam Stack that confines improvisation to a chosen scale.

Players can transpose by octave or key, add vibrato with a finger or by shaking the device, and drive the keyboard from a Bluetooth MIDI controller. ElectroSpit routes the app's output across the ESX-1's poly and mono projectors through a smooth-and-buzz balance control, so a performer shapes a full tone against a bright, intelligible one.