ConvertX vs ChatVault

Convert any unit in seconds with ConvertX — a powerful unit converter for engineers, students, professionals, and everyday use. From everyday measurements to advanced engineering conversions. -> 400+ UNITS ACROSS 44 CATEGORIES Quickly convert everyday and technical measurements, including: • Length — meters, kilometers, miles, feet, inches • Weight & Mass — kilograms, grams, pounds, ounces • Temperature — Celsius, Fahrenheit, Kelvin • Area — square meters, square feet, acres • Volume — liters, milliliters, gallons • Speed — km/h, mph, m/s • Time — seconds, minutes, hours, days • Data Storage — bits, bytes, KB, MB, GB • Pressure — Pa, bar, psi, atm • Energy — joules, calories, kWh • Power — watts, kilowatts, horsepower • Angle — degrees, radians • Frequency — Hz, kHz, MHz • Fuel Efficiency • And many more measurement conversions -> CURRENCY CONVERTER Convert between 30+ currencies using live exchange rates. Currency data can be cached for convenient access when an internet connection is unavailable. -> ENGINEERING CONVERSIONS — PRO Convert advanced engineering and scientific measurements with dedicated tools for professional and technical use. Mechanical Engineering: • Force • Torque • Stress • Density • Dynamic & Kinematic Viscosity • Acceleration • Angular Velocity Civil Engineering: • Flow Rate • Stress Intensity • Illuminance • Concentration • Water Hardness Electrical Engineering: • Voltage • Resistance • Capacitance • Inductance • Current Density Thermal & HVAC: • Thermal Conductivity • Heat Flux • Cooling Load • Specific Heat Science: • Radiation Dose • Radioactivity • Molar Amount Material Science: • Hardness — HRC, HV, HB, Shore • Elastic Modulus -> FAST AND EASY TO USE Convert measurements quickly with a clean interface designed for everyday and professional use. • Large, easy-to-read results • Swap units with one tap • Copy results to your clipboard • Save frequently used conversions to Favorites • View your recent conversion history • Fast calculations • Clean dark interface • Unit calculations work offline -> OFFLINE UNIT CONVERTER Convert units without an internet connection. Everyday and engineering calculations work directly on your device, making ConvertX useful at home, at work, in classrooms, laboratories, workshops, engineering sites, and while traveling. -> BUILT FOR ENGINEERS, STUDENTS & EVERYDAY USERS ConvertX is useful for: • Mechanical Engineers • Civil Engineers • Electrical Engineers • HVAC Technicians • Engineering Students • Science Students • Technicians • Construction Professionals • Material Scientists • Chemistry & Physics Students • Teachers • Developers • Travelers • DIY Users -> SIMPLE & PRIVATE No account is required to use ConvertX. Unit calculations work directly on your device, including offline conversions. Convert meters to feet, kilometers to miles, kilograms to pounds, Celsius to Fahrenheit, liters to gallons, psi to bar, watts to horsepower, and hundreds of other units in seconds. Whether you need a quick measurement conversion for everyday use or advanced engineering conversions for professional work, ConvertX brings everyday, scientific, engineering, and currency conversions together in one app. -> CONVERTX PRO Unlock all 29 engineering categories with a one-time purchase. Lifetime access. No subscription. One payment includes all current engineering categories and future engineering categories. Get ConvertX today and keep a powerful unit conversion toolkit at your fingertips. Whether you're an engineer, student, professional, traveler, or simply need a quick conversion, ConvertX makes everyday and technical unit conversions fast, simple, and convenient — even when you're offline.

Your conversations hold memories, decisions, and important information. ChatVault AI lets you import, search, and understand your chat history — privately, without any account or cloud login required. IMPORT YOUR CHATS Import WhatsApp chat exports (.txt or .zip) directly from the Files app. ChatVault AI parses your messages, organizes them by date, and stores everything locally on your device. After import, you are automatically taken to the new chat. READ YOUR CHATS Browse imported conversations in a familiar message bubble layout, grouped by date. Tap any message to copy or hear it read aloud. Jump instantly to the top or bottom of any conversation. KEYWORD SEARCH ACROSS ALL CHATS Search every imported conversation at once using the built-in full-text search engine. Filter results by chat or date. Available on the free plan. AI SMART SEARCH — PREMIUM Ask questions in plain language and find messages by meaning, not just exact words. "When did we discuss the trip?" finds relevant messages even if those exact words never appear. Powered by on-device AI — nothing leaves your device. AI CHAT SUMMARY — PREMIUM Generate a structured summary of any chat: key topics, decisions, and action items. Choose Short, Medium, or Detailed length. Summarize the full chat or a specific date range. Copy or share the summary. Runs entirely on-device by default. An optional Enhanced Summary mode uses Apple Private Cloud Compute for very long chats — you choose when to enable it. TIMELINE DIGEST — PREMIUM See what happened across all your chats — or one specific chat — over the last day, week, month, or a custom date range. Each digest shows message counts and an AI-generated summary per chat. MEDIA GALLERY Browse all photos, videos, audio files, and documents from an imported chat in a tabbed gallery. Preview files with QuickLook. Select multiple items and export them via the share sheet. EXPORT YOUR CHATS Export any chat as a plain .txt file or a zip file and share it anywhere. CLICK TO CHAT Start a chat with any phone number — no need to save it as a contact first. Choose a country code, enter the number, and optionally pre-fill a message. APP LOCK & SECURITY Protect the entire app with Face ID, Touch ID, or a 6-digit passcode. Set auto-lock to trigger immediately, after 1, 5, or 15 minutes, or never. Brute-force protection locks the app after repeated failed attempts and shows a countdown timer. Passcodes are stored using PBKDF2 with a random salt in the iOS Keychain. ICLOUD BACKUP — PREMIUM Back up your imported chats to your private iCloud account. Backups are encrypted and stored in your personal iCloud — not accessible to anyone else. Restore from backup history at any time. You can also export a vault archive to the Files app. PRIVACY FIRST AI summaries and semantic search run entirely on this device using Apple's NaturalLanguage framework. No account is required. No messages are uploaded to any server unless you explicitly enable Enhanced Summary, which uses Apple Private Cloud Compute. You can optionally delete the original export file from Files after import. PREMIUM PLANS Upgrade to ChatVault AI Premium to unlock: unlimited chat imports (free plan allows 1), AI Smart Search, AI Chat Summary, Timeline Digest, and iCloud Backup. Choose Weekly, Monthly, or Yearly billing. Restore purchases at any time from Settings. Import your chats. Find what matters. Keep it private. DISCLAIMER WhatsApp is a trademark of WhatsApp LLC. ChatVault AI is an independent application and is not affiliated with, endorsed by, or sponsored by WhatsApp LLC or Meta Platforms, Inc. This app imports chat export files that users have created themselves using WhatsApp's built-in export feature. Privacy Policy : https://sites.google.com/view/chatvaulttc/home Apple Terms of Use : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/