Press kit

Coolblack, the AI phone agent on iPhone, iPad and Mac.

Coolblack answers calls, speaks naturally, books appointments and retrieves knowledge. Depending on the setup it runs fully on-device, with a local language model, a local voice and a local knowledge base. On the App Store (Germany) since 9 June 2026, bilingual German and English. Built by a small team in East Westphalia, Germany, funded through the Gründungsstipendium.NRW start-up grant.

Last updated: 8 August 2026

Coolblack home screen with the voice agents

Fact sheet

The key points for your research at a glance.

Launch

9 June 2026, App Store Germany

Availability

On the App Store (Germany) now, the first 60 units free. App interface in German and English.

Platform

For iPhone, iPad and Mac (iOS/iPadOS 26 or later).

Architecture

Three tiers per agent: Local (language model, voice and knowledge base entirely on the device), Standard and Premium (EU cloud).

Business model

No subscription. 60 units free, then packages from €4.99. Purchased units do not expire.

Multiple agents

One voice, one prompt, one phone number per use case. A human can take over at any time.

Funding

Gründungsstipendium.NRW (state start-up grant)

Company

Coolblack GmbH, Bad Salzuflen (East Westphalia, Germany)

Telephony

SIP-based, integrated with CallKit. Optional Coolblack phone number from the Bad Salzuflen local area; your existing number is connected via call forwarding.

Try it yourself

Coolblack is available on the App Store. No application, no waiting — just install it.

Straight from the App Store

Runs on iPhone, iPad and Mac (iOS/iPadOS 26 or later). The first 60 units are free — enough to explore agents, appointments and the knowledge base at your own pace.

Get the app →

App preview video (28 seconds)

The official App Store preview video in 9:16 for vertical playback, showing a complete sample call in the app. German voice-over.

App Store screenshots (English)

The official English App Store screenshots in Apple's format (original 1320×2868, shown here at 800 px width for web). Cleared for editorial use. For print or original resolution, just get in touch.

Choosing a tier in Coolblack: Local, Standard or Premium — Choose a tier

Coolblack telephony setup — Telephony setup

Choosing an agent template in Coolblack — Choose a template

Promo clips (approx. 10 seconds each)

Short promotional videos by Coolblack GmbH showing typical call situations in different industries. Free to use.

Roofing company, first contact and job intake (English)

Hair salon, appointment booking (German)

Dental practice, reception (German)

About the founder

High-resolution portraits and a short bio for your coverage. Free to use with the credit "Coolblack GmbH".

Dirk Nesner

Founder & CEO · Coolblack GmbH

Dirk Nesner builds iOS apps with a clear focus on privacy by design and on-device processing. With Coolblack he pursues the goal of giving small businesses a professional phone desk on their own iPhone — without depending on call centres or generic cloud infrastructure. Coolblack GmbH is based in Bad Salzuflen, East Westphalia, Germany.

Portrait 1 (print, 5712 × 4284) Portrait 2 (print, 5712 × 4284) Portrait 3 (print, 5712 × 4284)