Karapp

Karapp is an audio content platform that needed to scale weekly content production from 5 pieces to 50+ without expanding its team. Esterox built an end-to-end AI automation pipeline that covers idea generation, audio production, cover design, publishing and personalized user notifications — cutting production time from 8–10 hours per piece down to 30 minutes.

Industry - Media / Audio Content Platform
Client - Karapp
Solutions - AI Content Generation · Text-to-Speech · Smart Publishing · Personalized Engagement
Armenia

Challenge

Manually producing a single audio piece took 8–10 hours across research, audio production, cover design, upload/metadata, user segmentation, and post-publish analysis. Scaling this workflow linearly would have required hiring an entire new team. Content research and script writing alone consumed 2 hours per piece, followed by 3 hours of audio generation and editing, 1 hour of cover design, 1 hour of uploading metadata to the app, 2 hours of user segmentation and push notifications, and a final hour of post-publish analytics. The team was capped at 5 pieces per week with no realistic path to growth.
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Solution

Esterox built an end-to-end AI pipeline that automates the entire content lifecycle from idea to listener. The Smart Content Generation module uses AI to analyze trending topics and listener preferences, automatically generates engaging scripts optimized for audio, and produces multiple variants for A/B testing. Automated Audio Production converts scripts to speech using natural-sounding Armenian voices, applies audio cleanup, enhancement and normalization, selects background music based on content mood, and supports multi-voice dialogue-style formats. Dynamic Cover Creation generates AI artwork matching the topic, enforces brand-style compliance, places titles automatically on artwork, and optimizes images for all screen sizes. The Smart Publishing Pipeline integrates directly with the Karapp platform API, populates metadata automatically, generates SEO-optimized descriptions, and schedules releases based on user activity peaks. Personalized Engagement delivers segmented push notifications based on listening history, surfaces personalized content recommendations, and selects optimal send times per user segment.
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Key Features

  • Smart Content Generation-AI analyzes trending topics and listener preferences to generate engaging audio scripts and multiple content variants for A/B testing.

  • Automated Audio Production-Text-to-speech with natural Armenian voices, automatic audio cleanup, background music selection, and multi-voice dialogue support.

  • Dynamic Cover Creation-AI-generated cover art with automatic brand compliance, title placement, and image optimization for all screen sizes.

  • Smart Publishing Pipeline-Direct API integration with Karapp, automatic metadata population, SEO-optimized descriptions, and scheduling based on user activity peaks.

  • Personalized Engagement-Segmented push notifications based on listening history, personalized content recommendations, and optimal send-time selection.

  • 10x Content Output-Production scaled from 5 to 50+ pieces per week. Time per piece reduced by 95% — from 10 hours to 30 minutes. ROI payback in 6 weeks.

Used Tech Stack

AI & Automation

Python

Python

OpenAI GPT-4

OpenAI GPT-4

LangChain

LangChain

n8n

n8n

Backend & Infrastructure

FastAPI

FastAPI

PostgreSQL

PostgreSQL

Redis

Redis

Docker

Docker

AWS

AWS