Proofline

Daily logic, one true order

Only for iPhone

Free · In‑App Purchases

iPhone

A fresh logic proof every day, plus 150 included levels across three difficulties. Read the clues, find the one true order, and track every solve. Every clue points to one true order. Proofline is a focused logic puzzle about arranging a short line of symbols. Read the visual relationships, move the symbols into place, and check whether every clue is true. Start with the Daily Proof, refreshed at midnight in New York. Then explore 150 included Level Proofs across Easy, Medium, and Hard difficulties. WHY PROOFLINE • Small puzzles built around real deduction • Essential clues with one uniquely solvable answer • Daily difficulty that builds through the week • Drag-to-insert and quick tap-to-swap controls • Optional hints, undo, and an always-available clue guide • Detailed statistics for Easy, Medium, Hard, and Daily play • No account required • No time limit Proofline is free with advertising. A one-time $4.99 Remove Ads purchase removes all ads; earned hint rewards double automatically without watching a rewarded ad. No subscription.

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The developer, Lincoln Wolf, 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

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • 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

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Lincoln Wolf
Size
  • 5.7 MB
Category
  • Puzzle
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Wolf & Ducks LLC
  • Developer Website
  • Privacy Policy

    • More by Lincoln Wolf