Cartographer's Lie

A daily deduction puzzle

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

One island. Forty-eight hexes. A handful of clues, and exactly one of them is lying. Every day brings a new map and a new deduction. Read the clues, rule out what cannot be true, and find the single hex that fits. No guessing, no luck, no coin flips. THE SETTER CAN DECEIVE. THE SETTER CANNOT CHEAT. Puzzles are built to mislead you, and a red herring is a legitimate weapon. But before a single one reaches you, a fairness gate proves that exactly one hex satisfies every clue and that you can reach it by elimination alone. Misdirection is fair. Ambiguity is not. A clue that eliminates nothing is banned outright. THREE TIERS FREE, EVERY DAY Casual, Standard and Hard, each with a measured difficulty rating. Three fresh puzzles daily. Start where you are comfortable and climb. The daily Fiendish chart comes with the Guild. TAKE NOTES YOUR WAY Tap to mark hexes, long-press for colour tags, highlight the map by individual clue. Or switch to Pure mode and hold the whole thing in your head. THREE GUESSES Each one costs you more than the last. Solve it clean, or do not solve it at all. SET YOUR OWN PUZZLES Build them in the composer with live candidate counts, a difficulty projection and Preview-as-Solver. You have to prove you can solve it before anyone else sees it. STREAKS AND STATS Daily streaks with freezes for the days life gets in the way, a spoiler-free grid for sharing your solve, and a skill rating that tracks how you are actually doing rather than how you feel you are doing. Play offline any time. Sign in with Apple to sync your history and play ranked. CARTOGRAPHER'S GUILD SUBSCRIPTION Cartographer's Guild is an optional auto-renewable subscription: the daily Fiendish chart, unlimited extra charts, the full archive, a solve review after every chart, targeted practice, rating and clue-type analysis, setter analytics, the ranked ladder, unlimited streak freezes and cosmetics. Casual, Standard and Hard stay free, every day. • 1 month: $3.99 per month • 1 year: $29.99 per year Payment is charged to your Apple ID at confirmation. A subscription renews automatically unless auto-renew is turned off at least 24 hours before the period ends. Manage or cancel in your Apple ID settings. Terms of Use (EULA): https://wisejester-sudo.github.io/cartographers-lie/terms.html Privacy Policy: https://wisejester-sudo.github.io/cartographers-lie/privacy.html

  • 5.0
    out of 5
    1 Ratings

FIXES A CRASH ON LAUNCH 1.4.8 would not open on phones running iOS 27. This update fixes that. Everything below arrived in 1.4.8 and is unchanged. YOUR FIRST CHART IS CASUAL New players now start on the Casual chart and move up to Standard after their first solve. Solve a Casual chart and the next one up is a tap away. REMINDERS AT YOUR HOUR Choose when the daily nudge arrives: 7am, 9am, 12pm or 7pm. If a streak of two or more is about to break, you get one warning that evening. You can switch either off in Settings. A SHORTER WAY THROUGH THE WALKTHROUGH Skip is on every page. The last page is where you sign in with Apple or Google to keep your record, and it stays out of the way if you already have. The Today tab also remembers which chart you were on.

The developer, Kevin Marsh, 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 Linked to You

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

    • Purchases
    • Contact Info
    • User Content
    • Identifiers
    • Usage Data

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

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

Seller
Kevin Marsh
Size
41.1 MB
Category
Puzzle
Compatibility
Requires iOS 16.4 or later.
  • iPhone
    Requires iOS 16.4 or later.
  • iPad
    Requires iPadOS 16.4 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and Spanish
Age Rating
13+
  • 13+
  • Frequent
    Contests

    Contains
    User-Generated Content
In-App Purchases
Yes
Copyright
© 2026 Kevin Marsh