# Holiday Extras Uses Codex for Faster App Rebuild

> Holiday Extras rebuilt its travel app in 2 weeks using OpenAI's Codex, boosting bookings by 32.5%.
- Title: Holiday Extras Uses Codex for Faster App Rebuild · OpenAI
- Summary: Holiday Extras rebuilt its travel app in 2 weeks using OpenAI's Codex, boosting bookings by 32.5%.
- Keywords: holiday extras, codex, travel app, booking conversion, app error rate, software development, ai tools, OpenAI
- Source: OpenAI — https://openai.com/business/customer-stories/holidays-extras-codex
- Read time: 1 min
- Topics: holiday extras, codex, travel app, booking conversion, app error rate, software development, ai tools, ai, technology
## Holiday Extras Rebuilds App with Codex
Holiday Extras rebuilt its mobile app using OpenAI's Codex to improve customer experience and business performance.
## 32.5% Higher Booking Conversion
Open-to-book conversion increased 32.5% after the app rebuild, showing better customer engagement.
## App Error Rate Reduced to 9%
The app's error rate dropped from 19% to 9% following the rebuild, improving reliability.
## 2-Week Development Timeline
Holiday Extras completed the app rebuild in two weeks instead of six months, accelerating software delivery.
## Customer Feedback Drives Fixes
Holiday Extras quickly addressed customer complaints, turning one-star reviews into five-star ratings within days.
## AI-Powered Operational Improvements
Automated systems now convert customer chats into actionable tickets for supplier network issues.
## CEO Matthew Pack's Vision
Pack aims to expand AI use across Holiday Extras' systems, enabling employees to direct work and shape outcomes.
## Key takeaway

Holiday Extras increased app booking conversion by 32.5% after rebuilding its travel app with Codex in 2 weeks.