ConvertMaster Pro

onvertMaster is a completely free, ad-free unit converter. Launch and go — no sign-up, no data collection. All 40 categories are permanently free with nothing locked behind a paywall.

**Everything Included, No Strings:**
• 40 categories: Currency (160+ live rates), Length, Area, Volume, Mass, Data Storage, Temperature, Speed, Time, Energy, Power, Pressure, Angle, Force, Torque, Fuel Economy… too many to list
• Batch conversion: input multiple values at once
• CSV export: send results via email or AirDrop
• Custom units: create your own unit combos
• History search: find anything you've converted
• Smart decimal display, one-tap copy
• Dark/Light theme, 20 languages
• Works offline (except live rates)
• No ads, no tracking, no account needed

**If It Helps You—**
This app doesn't gate features behind payment. If it saves you time, you can buy the developer a coffee. Tipping unlocks nothing — everything is already free.

**Perfect For:**
Students, travelers, cooking, home projects, engineers, international trade

**Requirements:**
iOS 14.0+, iPhone & iPad optimized