Induction: Logic Deduction
Hidden-grid logic deduction
Free
Somewhere inside the box, lodestones are hiding. You can't see them. You can only fire probes into the machine and watch what comes out.
A beam that flies straight through? Nothing in its path. A beam that never comes out? A direct hit. A beam that exits somewhere unexpected? Now you're getting somewhere. Every deflection is a clue!
Induction is a pure logic deduction game in the tradition of the classic Black Box puzzle: a hidden grid, a limited set of probes, and everything solvable by reasoning alone. No luck, no timers, no move-matching. If you love Minesweeper, nonograms, or picross-style deduction, this is that same "aha!" — with beams.
HOW IT PLAYS
• Fire probes into the edges of a hidden grid
• Read the results: hits, deflections, reflections, pass-throughs
• Mark your deductions in the grid until you're certain
• Seal your answer. Clean solves and streaks are tracked.
WHAT'S INSIDE
• Over 1,000 hand-tuned puzzles across notebook collections, from gentle on-ramp to expert codex
• A new Daily Challenge every day. The same puzzle for everyone, and streaks to keep
• A tutorial that teaches by demonstration, not walls of text
• Beautiful vintage-laboratory notebook style
PLAYS ANYWHERE
• Fully playable offline (commutes, flights, dead zones)
• No account required. Sign in with Google or Apple only if you want your progress backed up or synced across devices
• Progress backup and cloud sync when signed in
FAIR & FOCUSED
• Free, supported by ads; rewarded ads are always your choice
• No pay-to-win, no energy systems, no consumable nonsense
• Your brain is the only power-up
From Connexus Digital, the makers of Connexus Puzzles.
Charge the coils. Fire the probe. Find what's hiding.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Share your daily results, spoiler-free! The link opens the same puzzle for a friend, ad-free, with your stats to beat shown on their board.
- Milestone shares. Streak days (7, 14, 30, 100, 365), an earned month, a finished notebook, and many Field Records.
- Par recalibrated for Daily puzzles.
- Round timer starts on your first move, not when the puzzle opens, and pauses whenever the board is off screen.
- Field Records rays fixed. A lock-out followed by a refill and solve no longer counts the pre-lock-out rays twice.
- Sounds no longer stack. Retriggering a cue cuts the previous voice.
The developer, Connexus Digital, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Connexus Digital, LLC
- Size
- 90.2 MB
- Category
- Puzzle
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 Connexus Digital