Daily Deduction
Case Zero
A new case every day. Read the clues, place the suspects, name the thief. Solvable in five minutes. No ads, no accounts, no nonsense.
Open on the App Store
How it works
- One new case unlocks at midnight UTC, every day.
- Free to play. No login, no account, no ads.
- Three attempts. Solve cleanly for a three-magnifier rating.
- Share your result without spoilers. The way Wordle taught us.
Four puzzle templates
- Logic Grid. Four suspects, four rooms, four motives. Six clues. One thief. Eliminate the impossible.
- Timeline. Five events, five witnesses, one liar. Reconstruct the order and find the lie.
- Contradiction. Four statements, three true, one impossible. Spot the inconsistency.
- Alibi Web. Five suspects, mutual alibis, one unaccounted soul. Map the network and identify the gap.
Free, with one paid extra
Today's case is always free, with full scoring and sharing. The optional Detective Pass is a one-time purchase ($4.99) — no subscription, no renewals — that unlocks the archive of past cases, three additional puzzle templates in the daily rotation, and detailed stats.
Built for the iPhone
One-handed. Portrait-only. Offline-friendly. Your stats live on your device, not on a server. No account, no analytics, no third-party trackers. A daily ritual, not a treadmill.