Built · v1.1.0
Oracle
An Art Deco prediction diary that scores how well you know the future.
Write down predictions with a confidence level and let time judge them. Oracle computes Brier and log scores, calibration and overconfidence, presented as tarot cards, and includes a calibration trainer with 176 statements.
- Platforms
- Android
- Version
- 1.1.0
- Built with
- Flutter, CustomPainter





What it does
- A 270° confidence dial with haptics
- The reckoning: flip each card to came true, did not, or void
- A calibration chart with error bars and your Brier score over time
- Trials: 176 true-or-false statements to practise on
How it’s built
- Proper forecasting statistics: Brier score, log score, reliability, resolution and uncertainty
- The dial only claims drags along its ring, so the page still scrolls