Macworld.com is upgrading some back-end systems. Some site features, such as user registration, may be temporarily unavailable.
Discover 97733 iPhone apps   

App ReviewsiPod touch & iPhone app reviews from our editors—and you!

UnitsVersion: 0.95

Developer: Benjamin Spratling

Age rating: 4+

Rating Description

4+ Applications in this category contain no objectionable material.

9+ Applications in this category may contain mild or infrequent occurrences of cartoon, fantasy or realistic violence, and infrequent or mild mature, suggestive, or horror-themed content which may not be suitable for children under the age of 9.

12+ Applications in this category may also contain infrequent mild language, frequent or intense cartoon, fantasy or realistic violence, and mild or infrequent mature or suggestive themes, and simulated gambling which may not be suitable for children under the age of 12.

17+ Applications in this category may also contain frequent and intense offensive language; frequent and intense cartoon, fantasy or realistic violence; and frequent and intense mature, horror, and suggestive themes; plus sexual content, nudity, alcohol, tobacco, and drugs which may not be suitable for children under the age of 17.

Compatibility: Compatible with iPhone and iPod touch
Requires iPhone OS 2.0 or later

Filed Under: Reference

For scientists & engineers only.

While Units can do simple conversions like mm to inches, it can do much more. Units actually performs dimensional analysis, keeping track of what dimensions certain units are in. For instance, attempting to convert pounds (force) to kilograms (mass) will give you an answer in terms of acceleration, just as Sir Isaac Newton said it would. (Multiply kg by g to get a kilogram's force on Earth).

Unlike free online unit converters, Units lets you expand its default database of dimensions, physical constants and astronomical observations by adding the ones that are useful to you and modifying its existing units to meet your conventions. It's always available in your pocket, instead of pulling out your web-enabled mobile device to realize your lab walls blocks most wireless internet access.

Units also gives you symbolic keyboard support that the iPhone's built-in keyboard does not offer.

FEATURES:
• Dimensional analysis
• Database of most popular units, physical constants, astronomical observations
• Customize dimensions & units
• Extra symbolic keyboard
• Correct "offset" (temperature) support
  •  
  •  

Units Screenshots

Newest Reference apps under $10