Engineered for Engineers, Students & Daily Pros
Clean, blazingly responsive, and strictly private. Everything you need in a modern conversion companion.
35+ Measurement Categories
Length, Mass, Volume, Temperature, Speed, Digital Storage, Energy, Pressure, Fuel Economy, Torque, Typography, and 25+ more.
Custom Formula Engine
Define custom forward and inverse mathematical formulas with interactive variables. Save and test them locally with instant validation.
Live & Cached Currency Rates
Synchronize 30+ major global currencies (USD, EUR, GBP, INR, JPY, and more) from public open APIs, cached locally in SQLite for seamless offline calculations.
Smart NLP Search & Math Input
Type natural queries like "50 kg to lbs" or evaluate inline arithmetic expressions ("12.5 * 4 + 2") directly in the search bar.
Tangible Scale Comparisons
Visualize abstract numbers and large engineering quantities with intuitive physical references (e.g. "Equivalent to 3 Olympic swimming pools").
100% Local-First Storage
All custom formulas, conversion history, and favorites are stored strictly on-device in a private SQLite database with zero cloud uploads.
Frequently Asked Questions
Swivert combines a 100% local-first database with 25+ scientific and daily conversion categories, an interactive Custom Formula Engine, natural language query search, tangible real-world comparisons, and live/cached currency rates. All conversions execute with 64-bit double precision directly on your device.
Yes! All unit conversions (length, weight, temperature, pressure, digital storage, etc.) and custom formula evaluations operate 100% offline without needing an internet connection. Currency rates are cached locally in your SQLite database for seamless offline calculations.
Absolutely. Swivert includes a visual Custom Formula Builder that lets you define custom variables, forward/inverse mathematical formulas, and custom measurement units stored securely in your device's local SQLite database.
No. Swivert operates on a strict Zero Personal Data Tracking policy. We do not require accounts, logins, or permissions to your contacts or files. Your calculations, custom formulas, and history never leave your phone. Anonymous crash diagnostics and privacy-respecting ads adhere to Google Play policies with full GDPR/UMP consent management.
Swivert is available for immediate download on the Google Play Store for Android. Simply tap any 'Get it on Google Play' or 'Download Swivert Now' button on this page.
Ready for Precision Conversions?
Download Swivert on your Android device and experience instant, offline, double-precision unit and currency conversions.
Download Swivert Now
Scan with phone to install instantly