Calculy vs DataTracker

Calculy is a free calculator for iPhone and iPad. Small yet mighty and totally ad-free. Go beyond basic calculations with Calculy’s full range of functions: • unit converter with more than 220 units from 16 sections (including currencies with daily updated rates) • percentages • square, cube and nth power • square root, cube root and nth root • logarithm, natural logarithm, common logarithm • factorial, reciprocal • rounding • exponentiation to the power of 2, 10, e • Pi, e Euler's number, random numbers • sine, cosine, tangent • arcsine, arccosine, arctangent • hyperbolic sine, hyperbolic cosine, hyperbolic tangent The expanded layout for iPad handily displays all available function keys. Hardware keyboard is supported on the iPad.

DataTracker keeps you in control of your cellular data plan — no surprises at the end of the month. Set your plan limit and cycle dates once. DataTracker automatically tracks your cellular usage in the background and tells you exactly where you stand. FEATURES • Live usage tracking — monitors cellular data automatically, no manual entry needed • Home screen widget — see your usage at a glance without opening the app • Lock screen widget — circular gauge always visible • Daily usage chart — bar chart showing usage day by day with zoom and tap detail • Smart status badges — On Track, Over Pace, or Critical based on your remaining budget • Daily budget — know exactly how many GB you can use each day to stay on track • Run-out estimate — see the projected date you'll exhaust your plan • Threshold alerts — notifications at 75% and 90% usage • Adaptive app icon — icon changes automatically to reflect your current usage tier • Cycle history — review past billing cycles All data stays on your device. No account required. No network calls. No ads.