Voidcaller website design case study by Asket Studio
Client
Voidcaller
Services
App Design
Built with
8 tools and technologies
Year
2026

Voidcaller is an Android dialer built on an argument for less: no advertising, no tracking and nothing on screen that does not earn its place. Asket Studio designed the monochrome interface screen by screen, with pill-shaped tabs, sliding navigation and hierarchy carried by type and spacing alone.

  1. The brief

    Voidcaller is an Android dialer for people who find the stock one cluttered. The entire product is an argument for less: fewer features, no advertising, no tracking, and an interface that gets out of the way of the only thing anyone opens a dialer to do.

  2. What we designed

    A monochrome interface designed screen by screen, in the spirit of Nothing OS: dot-matrix lettering, pill-shaped tabs, and a palette of black, white and one accent. The dialer, contacts, call log and settings each earn their place and nothing else was allowed in.

    Movement carries the navigation instead of chrome. Tabs slide, sheets rise, and the transitions are quick enough to feel like the phone responding rather than an animation playing.

  3. Worth noticing

    Designing something this reduced means every decision is exposed. With no colour to fall back on, hierarchy has to come from type weight, spacing and contrast alone, and any element that cannot justify itself simply has to go.

What it does

  • Monochrome, Nothing OS-inspired interface
  • Dialer, contacts, call log and settings
  • Pill-shaped tabs and sliding navigation
  • Dot-matrix display lettering
  • No advertising, no tracking
  • Hierarchy from type and spacing alone
Used Elements

See the highlights
of this project.

This project was built with...

Android App
Dialer UI
Monochrome UI
Mobile App Design
Structured UX
Design System
Figma
Product Led
More work

Other things
we have built.