GOLLE IT
Services
PortfolioAboutBlogCalculator
Book a Consultation
GOLLE IT

Your software boutique from Frankfurt. For over 16 years, we've been building Shopware plugins, apps, and web platforms for mid-market businesses.

hello@golle-it.de+49 69 348 789 10 - 0
Berger Straße 125
60385 Frankfurt am Main

Services

  • App Development
  • E-Commerce
  • Web Platforms
  • AI Solutions
  • Consulting
  • UI/UX Design
  • AI Potential Workshop

Company

  • About Us
  • Portfolio
  • Technologies
  • Shopware Plugins
  • Careers
  • Contact
  • Funding

Locations

  • Frankfurt
  • Hamburg
  • München

Legal

  • Imprint
  • Privacy Policy
  • Terms & Conditions

© 2026 GOLLE Digital Solutions GmbH. All rights reserved.

Made with precision in Frankfurt|GDPR compliant
All Case Studies
App Development|GOLLE IT (Eigenes Projekt)

ExcuseApp — AI-Powered Escape Calls

Mobile app for AI-generated escape calls with realistic scenarios, AI voice agents, and a pay-per-call model — a creative in-house project by GOLLE IT.

2026
FlutterSupabaseAI VoiceiOS
ExcuseApp — AI-Powered Escape Calls

5+

Realistic Scenarios

AI

Voice Agent

iOS & Android

Cross-Platform

2 Gratis

Calls on Signup

About the Client

ExcuseApp is an in-house product by GOLLE IT — developed as a creative side project that showcases the team's AI voice and app development expertise. From concept to UI/UX design to the finished product: everything from a single source.

Live Demo

Interactive preview of the application

01 · Starting Point

The Challenge

Everyone knows the feeling: a meeting that won't end, a date gone wrong, or a conversation you just need to escape. The idea was simple — an app that generates a convincingly real phone call at the tap of a button to gracefully rescue you from any situation. The challenge: the call has to feel absolutely real.

Not a pre-recorded clip, but an AI-powered voice agent that holds a natural conversation and reacts to the other person.

02 · Implementation

Our Solution

We built ExcuseApp as a cross-platform app with Flutter for iOS and Android. The backend runs entirely on Supabase — authentication via SMS login, Edge Functions for business logic, and PostgreSQL as the database.

The core is the AI voice agent: users choose from realistic scenarios like "Urgent boss call", "Family emergency", or "Roommate lockout" — each with its own AI voice and personality. The timer is flexible (5 min, 15 min, 30 min, or custom up to 24h). At the scheduled time, the AI agent calls and holds a convincing, natural conversation.

Solution Highlights

  • AI voice agents with unique voices and personalities per scenario
  • Flexible timer from 5 minutes to 24 hours in advance
  • SMS-based login for maximum simplicity
  • Pay-per-call model with no subscription — credits never expire
  • Polished dark UI with gradient accents
03 · Results

The Results

ExcuseApp shows what happens when app development, AI integration, and product design come together in one team. From initial concept to UI/UX design to the finished product on App Store and Google Play — a complete product built by GOLLE IT from A to Z. The app demonstrates our expertise in Flutter development, AI voice integration, and modern serverless backend design.

What We Built

01

AI Voice Agent

No pre-recorded clip — an AI agent calls and holds a natural conversation. Each scenario has its own voice and personality.

02

Realistic Scenarios

From "Boss emergency" to "Grandma in hospital" to "Roommate lockout" — five convincing scenarios across family, work, and friends categories.

03

Flexible Timer

Quick timer (5, 15, 30 min) or custom time up to 24 hours ahead. Live countdown on the home screen.

04

Pay-per-Call

No subscription, no hidden fees. Buy credits and use them whenever — they never expire. 2 free calls on signup.

05

Cross-Platform

Native performance on iOS and Android thanks to Flutter. One codebase, two platforms, one consistent experience.

06

Serverless Backend

Supabase with Edge Functions, PostgreSQL, and SMS auth. Scalable, cost-efficient, and low maintenance.

Project Insights

Visit live project
Technology Stack
FlutterSupabaseEdge FunctionsPostgreSQLAI Voice APIDart

More Projects

PolarFoxx — IoT Temperature Monitoring
App Development

PolarFoxx — IoT Temperature Monitoring

IoT platform for digital temperature monitoring with Bluetooth/LoRa sensors, Flutter apps, and automated HACCP documentation.

Read case study
Profession Fit — Corporate Health Management
App Development

Profession Fit — Corporate Health Management

Scalable SaaS platform and mobile apps for corporate health management with Apple Watch integration and 25+ languages.

Read case study
Markora — Digital Ventilation Measurement
App Development

Markora — Digital Ventilation Measurement

Cross-platform app for digital ventilation measurement with real-time 3D visualization, offline mode, and automatic PDF/XML documentation.

Read case study

Planning a similar project?

Let's bring your idea to life together.

Discuss your project