# Crux: Daily Logic Puzzles — Daily Logic Puzzles > Daily Logic Puzzles (iPhone/iPad app by Josh Hills.) - Source: https://appshunter.io/ios/app/crux-daily-logic-puzzles/id6758669941 (this page in markdown: same URL + `.md`) - Developer: [Josh Hills](https://appshunter.io/developer/1874307370) - Category: Games, Entertainment, Puzzle, Word - Price: Free with in-app purchases - Age rating: 12+ - Requires: iOS 16.4 · 80 MB - Languages: American English - Released: 2026-08-11 - Data updated: 2026-08-26 - User reviews in markdown: https://appshunter.io/ios/app/crux-daily-logic-puzzles/id6758669941/reviews.md ## What is Crux? Crux (n.): a puzzling or difficult problem; an unsolved question. Crux is a daily logic-grid puzzle app for people who enjoy thinking things through. Each puzzle is a classic deduction grid (the kind you may know as an Einstein or Zebra puzzle): read the clues, eliminate what cannot be true, and work out how everything fits. SEVERAL NEW PUZZLES EVERY DAY Each day brings fresh grids across multiple difficulties, from the quick Hunch up through Expert, with richer clue types as the challenge grows. Optional narrative themes turn categories into short story clues, so the same logical workout feels different from day to day. Build streaks, earn achievements, and track your progress over time. PLAY THE PAST Browse the Archive to replay puzzles from earlier days. Premium unlocks the full history since launch. BUILD YOUR OWN Crux is also a puzzle engine. • Create unique grids in the Custom Builder • Customize theme, difficulty, and size • Control auto-generated clues or craft them step by step • Save favorites to replay anytime LEARN THE LOGIC New to logic grids? The interactive tutorial walks you through cross-referencing and elimination until the method clicks. DESIGNED WITH CARE • Clean, focused interface with dark and light mode • Check answers as you go (Premium) • Optional streak reminders so you do not lose a run • Six languages: English, German, Spanish, French, Italian, Portuguese • Curated puzzle packs to work through at your own pace • Export puzzles to PDF to print and share • Works offline. Great for commutes and travel • No ads • Optional analytics. You choose whether to share usage data FAIR PRICING Crux is free to download with daily puzzles included. One optional, one-time Premium purchase unlocks everything below across your devices. No subscription. • Full Daily Archive • Unlimited Custom Builder • Mid-puzzle answer checking • Print and PDF export • Hard and Expert daily puzzles • More puzzle packs Sharpen your mind. Find the connections. Solve the Crux. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Crux Premium | $1.99 | one-time | ## Version history (last 5 releases) ### 1.3.1 — 2026-08-25 Fixed bug with Red Herring gamemode leading to unsolvable puzzles ### 1.3.0 — 2026-08-23 - NEW Red Herring game mode: weekly cryptic puzzles that have one or more fake clues - Custom puzzle builder improvements: dedicated saved puzzles page and random puzzle function - Solution feature on all modes: view step-by-step answers to puzzles - More achievements - Improvements to layouts on small screens ### 1.2.0 — 2026-08-18 - Undo & Redo Controls: Easily step backward or forward through your grid moves with new Undo, Redo and Bookmark actions during play - New Achievements Page: Tap the Achievements section on the home screen to view your full collection in a dedicated grid view - Victory Modal Enhancements: Refined victory screen layout with themed victory messages - Audio Refinement: Updated the clue toggle sound effect to a drum hit - Animation & UI Polish: Improved puzzle board pan and zoom ### 1.1.2 — 2026-08-16 More minor bug fixes! ### 1.1.1 — 2026-08-15 Minor bug fixes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*