Prediction markets · Data tooling
The probability of everything, where you work.
ManticView streams live probabilities from Manifold's prediction markets into the tools you already use — spreadsheet cells that recalculate and home-screen widgets that chart the future while you go about your day.
free · open source · no api key · MIT
Two surfaces. One stream of foresight.
The same public Manifold data, shaped for the place you'll actually look at it.
In Google Sheets
Custom functions that treat probabilities like any other number — chart them, average them, alert on them.
On your home screen
A TradingView-style watchlist widget, and a single-market widget with a full chart. Grouped, themeable, battery-friendly.
How it works →Built like an instrument.
Small, honest, and precise — the way good data tools should be.
Honest comparison periods
Deltas are interpolated at the exact cutoff — "1H" means one hour, and the chart window follows.
Watchlists & categories
Organize markets into groups; reorder, rename, or hide them from the widget entirely.
Every answer, separately
Track several answers of the same multiple-choice market side by side, each with its own chart.
Resolution, resolved
Outcomes show in plain color-coded language, linger 48 hours, then auto-archive.
Light & dark
System, light, or dark — one setting themes the app and both widgets.
Nothing to sign up for
Reads the free public Manifold API. No account, no key, no telemetry, MIT-licensed.