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.
FAQ
A decision journal for iPhone and iPad. You record what you predict and how confident you are, check in as things change, and resolve each call when the outcome lands. After a few dozen decisions, it shows how calibrated your judgment actually is — confidence against hit rate.
A notes app stores what you wrote. Reckon stores what you predicted, with a confidence number, and the outcome — so it can do math your notes can't: compare your stated confidence to how often you're right, and show where you're systematically over- or under-confident.
Calibration is how well your confidence matches reality: say 70% and be right about 70% of the time, and you're calibrated. Most people aren't, and can't tell without a record. Reckon builds that record from your own decisions and reads the gap back to you.
No account, no backend. Everything lives on your device and syncs across iPhone and iPad over your own iCloud. Your predictions and outcomes stay yours — nothing is uploaded to a server we run.
One-time purchase, no subscription. Buy it once on the App Store and own it, iCloud sync included. No recurring fee for a tool you're meant to use for years.
