FORECAST CONFIDENCE
The second opinion for your weather app.
Most weather apps blend several forecast models into one number. Chorus shows you where they disagree, so you know how much to trust it.
Free for iPhone, with Chorus Plus
One answer to check first: do the models agree?
Agree
The models tell much the same story. There's little disagreement to second-guess.
Mixed
Some models differ, on the temperature or on whether or how hard it rains. Worth checking again later.
Split
The models tell different stories. Have a plan B.
Know before you open the app.
Widgets for your Home Screen and Lock Screen show the confidence for the next 24 hours, and what the models disagree about.
Made to sit beside the weather app you already use.
Every model on the chart
ECMWF, GFS, ICON and the UK Met Office, each drawn as its own line, with the blend on top.
Every hour and every day
Agree, Mixed or Split for right now, the next 24 hours and the week ahead, so you know when to look again.
Widgets that answer at a glance
On your Home Screen and Lock Screen: the state, the temperature and when the models disagree.
Sharper where it covers you
Across the UK and nearby, Chorus includes the Met Office's 2 km model for the first two and a half days.
Private by design
Your location is rounded to about 2 km, used only to fetch your forecast, and never stored or shared.
Your models, your places
With Chorus Plus, compare any of six models or follow one, and save up to 20 places.
Chorus is free. Chorus Plus goes further.
Home and Lock Screen widgets, your choice of six models to compare or follow, and up to 20 saved places. Try it free for a week.