Mercuro: Thermometers Puzzle

Sudoku-style daily logic

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

Launch price on Mercuro Pro. 300+ free handcrafted puzzles plus 3 new dailies every day. Calm, pure logic. No subscription, ever. Fill the heat. Mercuro is the thermometers logic puzzle: fill every tube with mercury from the bulb up until every row and column count matches its clue. Pure deduction, no guessing, every board has exactly one solution. CALM, PURE LOGIC A quiet brain workout in 5 minutes or 50. No timers chasing you, no lives, no pressure. Just you, the clues, and a board that always plays fair. 600+ HANDCRAFTED PUZZLES 300+ free puzzles across 8 board sizes, from quick 5x5 warm-ups to deep 12x12 thinkers. Every single one is hand-checked for a unique, satisfying solve. Mercuro Pro doubles the game with 300+ more in the Kelvin chapters. 3 NEW PUZZLES EVERY DAY A fresh daily set each morning: Warm-Up, Daily, and Challenge. Keep your streak alive and revisit the last two weeks in the archive. MAKE IT YOURS 9 handcrafted themes, from riso-print paper to calm glacier blue. Earn them by solving, or unlock them all instantly with Pro. COMPETE AND COLLECT Game Center leaderboards, 40 achievements, and a rank ladder from Novice to Virtuoso. PLAYS ANYWHERE Fully offline. iPhone and iPad. Progress syncs through iCloud. FAIR PRICING, NO SUBSCRIPTION The free game is complete: 300+ puzzles plus the daily set, forever. One optional one-time purchase removes ads and unlocks everything. That is it.

Ratings & Reviews

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Bug fixes and improvements.

Version 1.0.4

The developer, Arbaz Siddiqui, 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:

    • Purchases

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • 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
  • Arbaz Siddiqui
Size
  • 59.7 MB
Category
  • Puzzle
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Arbaz Siddiqui
  • Developer Website
  • Privacy Policy

    • Supports

    • Game Center

      Discover new games and play with friends. This game also features leaderboards and achievements.

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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