Case Study: Large iOS-Based Company achieves 99.5% crash-free performance and GDPR/SOC/ISO compliance with Altoros

Modernizing a Documentation Management App Serving 5,000+ Organizations

Altoros partnered with a Norway-based provider of a corporate documentation web platform and iOS mobile app used by 115,000+ daily users across 5,000 organizations. The aging iOS stack caused slow performance, frequent crashes, security vulnerabilities that prevented GDPR/SOC/ISO compliance, and timeout errors when users tried to download large documentation volumes.

Altoros migrated the app to a modern Swift-based stack, updated SQLite and security libraries (e.g., SFHFKeychainUtils, SecureNSUserDefaults), implemented request queuing and limited parallel downloads with Queuer, and helped tune the Azure DevOps CI/CD pipeline and testing. As a result, Altoros achieved zero-downtime replatforming, raised the crash-free rate to 99.5% (from ~95%), enabled reliable downloads of >1,500 files without timeout, ensured GDPR/SOC Type 2/ISO 27001:2013 compliance, and simplified ongoing maintenance.