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Tip Calculator - The ultimate tip calculator with split function
Calcbot for Apple Watch - Calculate, convert, and split tips from your wrist
Tipping - Ridiculously quick tip calculator
SpeQ Mathematics - SpeQ is a small, extensive mathematics program with a simple, intuitive interface.
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.
Kickstarter - Kickstarter is the world's largest funding platform for creative projects. A home for film, music, art, theater, games, comics, design, photography, and more.