A scientific calculator, built in

In the app, open About › Tools › Scientific Calculator: Basic, Graph, Stats and Sensors modes, 129 functions you can call by name, and a searchable Function Reference that shows each function’s formula and, where a quantity has a unit, the unit each input takes.

Try five free money-style questions

See a sample of the registry

A sample from the calculator registry

A sample of the 129 functions in the app’s built-in calculator, with the units each input takes.

PhysicskinVelocity(v0, a, t)Units: v0 (m/s) · a (m/s²) · t (s) → m/sKinematics: velocity at time t
PhysicsnewtonForce(m, a)Units: m (kg) · a (m/s²) → NNewton’s second law: force
PhysicsgravitationForce(m1, m2, r)Units: m1 (kg) · m2 (kg) · r (m) → NNewton’s law of universal gravitation: force between two masses
PhysicsdragForce(v, Cd, A, ρ)Units: v (m/s) · Cd (dimensionless) · A (m²) · ρ (kg/m³) → NQuadratic (Newtonian) drag force on an object moving through a fluid
PhysicsidealGasPressure(n, T, V)Units: n (mol) · T (K) · V (m³) → PaIdeal gas law: pressure
PhysicspendulumPeriod(L, g)Units: L (m) · g (m/s²) → sSimple harmonic motion: small-angle pendulum period
Units and anglescelsiusToFahrenheit(x)Units: x (°C) → °FConvert degrees Celsius to degrees Fahrenheit
Units and anglesdegToMrad(x)Units: x (°) → mradConvert degrees to milliradians (× π/180 × 1000)
Position and heightutmEasting(lat, lon)Units: lat (°) · lon (°) → mUTM easting of a WGS 84 latitude and longitude in degrees, from 80°S to 84°N
Position and heightheightAboveGround(h, ground)Units: h (m) · ground (m) → mHeight above ground (AGL): altitude minus ground elevation, both above the same reference
Color sciencecorrelatedColorTemperatureMcCamy(x, y)Units: x (dimensionless) · y (dimensionless) → KCorrelated color temperature from CIE 1931 xy chromaticity (McCamy’s 1992 cubic approximation)
Tone and colorfrequencyToHueDegrees(f, fRef)Units: f (Hz) · fRef (Hz) → °Audio frequency to OKLCH hue: a designed octave-to-hue mapping, independent of angle mode
Linear algebradet3(a, b, c, d, e, f, g, h, i)3×3 matrix determinant
LoansloanPayment(B, r, n)Level monthly payment for balance B at APR r % over n months

det3 works on plain numbers, and loanPayment’s summary names its own units (an APR in percent and a number of months), so the app shows no unit line for them. Units say what each input expects: the calculator doesn’t carry units through an expression you type, so typed results show no unit.

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The budget comes with the app, no account needed. Plus adds bank connection and automatic import: 7 days free when Apple says you're eligible, then $9.99/month, billed through your Apple Account. Cancel anytime in Settings.