Grids of Thermometers delivers the relaxed fun of a pen-and-paper logic game right to your fingertips. In each level, you fill a grid of thermometers with mercury. Numbers on the grid edges tell you how many cells must be filled in each row and column.
No random guessing! Solve the levels with logic only.

Thousands of levels
Exclusive new levels every day
No rush: play at your own pace by starting a level and completing it later
No Wi-Fi? Enjoy playing offline
Multiple grid sizes for varied difficulty
Ability to zoom in and move the grid on smaller devices

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What’s New

Version 2.1.9

Various small fixes
Ad for Starlight X-2

Ratings and Reviews

4.7 out of 5
63 Ratings

63 Ratings


Warning: VERY Addictive!

This is a great mind game...which isn't too hard and isn't too easy. There aren't so many ads that you hate playing. There is only one problem...I CAN'T STOP PLAYING! I love this game and I regret the day I have completed all of the puzzles.

Nova rules ,

Great game

Love this game It is addictive so much fun to play. If you like puzzle games this is a great one. Wish I could find more like it. It is my favorite game I have on my phone.

Calmomprof ,

Used to be great

This went from
A clean looking and challenging game
To a monetized mess. I bought all the puzzles available two years ago so I could play all levels. But now it looks like I will get charged for playing what I bought before. I've deleted the app. Thanks for ruining a good brain teaser with your cheap looking graphics and completely confusing terms. Sorting through your terms of use is not the brain teaser I had in mind.

Developer Response ,

With the "All Packs" purchase you made earlier, you got 7 packs of 100 levels. All these packs are still unlocked in the new version. If that's not the case, it's a bug (please send me an email at so that I can fix it).
The new levels, exclusive to the new version, will not be unlocked, though. You can try a few of them by looking at video ads.
Having complex terms of use is a legal requirement.


Frozax Games
35.3 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Danish, Dutch, French, German, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Turkish

Age Rating
In-App Purchases
  1. All packs! $5.99
  2. Premium Subscription $4.49
  3. Daily Pack $0.99


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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