ConvertMaste
40 Categories · Free & Offline
Free · In-App Purchases · Designed for iPad
100% free, instant unit converter. All 40 categories fully unlocked — live exchange rates, batch conversion, CSV export included. Tips welcome if it serves you well.
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
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
This update has optimized the product page to let more users know - ConvertMaster Pro is completely free, ad free, and permanently open to all 40 types of units. Welcome new friends to download and experience!
The developer, 磊 刘, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- 磊 刘
- Size
- 25.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- In-App Purchases
Yes
- Unit Conversion Pro Edition ฿199.00
- Unit Conversion Standard Version ฿99.00
- Copyright
- © 2026 LIULEI