A decision journal for iPhone and iPad: record what you predict, how confident you are, and what actually happens — then learn how calibrated your judgment really is. Track predictions, watch confidence drift, and catch where you're overconfident. One-time purchase, iCloud sync, no account.
Image 1 of 4: Log the call while it's still uncertain.
Log the call while it's still uncertain.
Every decision moves through four moments. You log the call while it's still uncertain: the prediction, a line of reasoning, and one number for how sure you are.
As things change, a thirty-second check-in nudges that confidence up or down, and every check-in stays on the record. When it's over you mark what actually happened and how satisfied you are with the call, your original prediction sitting right there so hindsight can't quietly rewrite it.
Do that a few dozen times and the reliability diagram shows where your confidence runs hot or cold. The dots don't flatter you.
Writing down what you expect before the outcome exists, so you can find out later whether you actually called it.
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