Here's a cleaner, more professional rewrite without the redundancy:

**Unit Convert X - The Ultimate Engineering Unit Converter**

Transform complex engineering calculations with the most comprehensive unit converter designed for professionals.

**KEY FEATURES:**
• 600+ professional units across 35+ specialized categories
• Scientific notation support (×10ⁿ) for precision calculations
• Fraction input mode for architectural and construction work
• Lightning-fast instant conversions
• 100% offline functionality - no internet required
• Clean, ad-free interface with dark mode
• Optimized for engineering, scientific, and technical professionals

**COMPREHENSIVE CATEGORIES:**
Engineering • Electrical • HVAC • Water Quality • Material Strength • Scientific • Digital Storage • Finance • And many more specialized fields

**FLEXIBLE PRICING:**
Choose the option that works best for you:

**Annual Subscription - $9.99/year**
• 7-day FREE TRIAL to explore all features
• Auto-renews annually
• Cancel anytime

**Lifetime Access - $29.99**
• One-time purchase
• All features, forever
• No recurring charges

**SUBSCRIPTION DETAILS:**
After your 7-day free trial, payment will be charged to your iTunes Account. Subscription automatically renews unless cancelled at least 24 hours before the current period ends. Manage or cancel your subscription anytime in your Account Settings.

**Note:** Full functionality requires either subscription or lifetime purchase. Choose your preferred option when you first open the app.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://unitconvertx.github.io/docs/privacy.html