Write it down
Record what you expect, how confident you are and when you will check. Run a pre-mortem and look for the objection with the devil's advocate.
Decision journal for Android
Decide. Predict.
Review.
Write a decision down before the outcome lets you rewrite the story. Seal it with a long press and, when the date arrives, reveal what you thought and measure how well calibrated your judgement is.
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No account. No ads. No subscription.
It does not tell you what to decide. It helps you remember what you believed, see what happened and spot your patterns.
A cycle, not a list
One decision.
One prediction.
One honest review.
Seal it
Press and hold to seal. From then on it cannot be edited and stays hidden until the review date. If something changes, add a dated note: the original is never touched.
Review it
When the day comes, Augur reveals your sealed message. Mark the outcome (yes, no or partial) and watch how your Brier score moves.
Real example
ReviewedAccept the move to the product team
Sealed until the review date
- Prediction
- In six months I will still be happy on the new team.
- Confidence
- 70%
- Review date
- 15 May 2027
- Pre-mortem risk
- The team is not what they described in the interview.
- Outcome
- Partial
Brier score of this decision
0.04(0.70 − 0.5)² = 0.04
Partial counts as 0.5. Had it gone well, the Brier would be 0.09. Had it gone badly, 0.49. Lower is better.
What's inside
Built so that what you
write down matters.
Sealing, with a little ceremony
A summary, a "Hold to seal" button, haptic feedback and a stamped seal that shows the review date and a calendar reminder. It is a ritual in the app, not encryption.
Review with a reveal
On review day your sealed message appears as a moment of its own. Then you mark the outcome and see your Brier score before and after.
Guided calibration
A plain sentence tells you how you are doing. A chart with the ideal diagonal compares what you declared with what happened. The Brier score takes a back seat and warns you when the sample is small (under 10).
Three themes
Light, Dark and Augur, the gold brand theme. You can also follow the system theme.
Delete with undo
Made a mistake? Tap Undo. Deleted items are hidden and removed from the device after 30 days; they never appear in backups or statistics.
Free biometric lock
Protect Augur with your fingerprint, face or the system PIN. Android handles it: Augur never receives your biometric data.
16 languages
Augur comes in Spanish, English, German, French, Italian, Portuguese (Brazil and Portugal), Dutch, Polish, Russian, Ukrainian, Turkish, Japanese, Korean and Chinese (Simplified and Traditional).
The real app
Three screens, three themes
A simple model
The core is free.
Pro is a one-time purchase.
Free
- Record and seal decisions
- Pre-mortem and devil's advocate
- Review with a reveal and a Brier score per decision
- Guided calibration and global Brier
- Dated notes on sealed decisions
- Delete with undo
- Manual JSON and CSV backup
- Reminders
- Biometric or PIN lock
- Light and Dark themes
Augur Pro
€4.99one-time payment
- Advanced statistics by category
- Automatic backup to the folder you choose
- Gold Augur theme, with a preview before you buy
After your first review, Augur offers you a 7-day Pro trial, once.
No subscription. Indicative price: Google Play shows the one for your country.
Privacy, without fine print
Your decisions stay on your phone.
No account, no cloud copy
Decisions, notes, predictions and sealed messages are stored only on your device. They are not part of your Google backup. To switch phones, export the JSON backup.
No ads, no third-party tracking
There are no ads and no third-party analytics SDKs.
Anonymous diagnostics, with a switch
Minimal technical data (a random identifier, version, language, Android, model, approximate country and crashes) is sent to find errors. Your decisions are not sent. You can turn it off in Settings.
Feedback only if you send it
A comment from the app leaves your phone only when you tap send, and is kept for 12 months on our server. Earlier, if you ask by email.
Optional, free lock
Fingerprint, face or system PIN. Augur does not receive your biometric data.
Your data stays yours
Export to JSON or CSV any time. Pro's automatic backup writes to the folder you pick.
Start with one decision
you want to remember.
Join the Android closed beta and help us improve Augur before launch.
Try the beta