Sumaddle 4+

Name: Sumaddle
Author: Jonathan Buchanan

Logical puzzle

Jonathan Buchanan

- Free
- Offers In-App Purchases

Description

A logic game for fans of challenging puzzles.

• “The ONLY iOS game I've never gotten tired of”, Reddit review Apr 2024

• “This is, hands down, THE best logic game on the App Store”, US App Store review Mar 2023

• “Best brain workout”, US App Store review Jan 2023

This type of logic puzzle was first seen in the Japan Puzzle Championship 2006 and is sometimes known as Doppelblock, or Smashed Sums. When played with pencil and paper, these puzzles can be hard work to solve. Sumaddle changes that by adding the essential element of interaction. This transforms the puzzles into intriguing brain teasers that unfold before your eyes.

Useful to know: even though there are numbers involved, all puzzles can be solved with pure logic, no mental arithmetic is required.

So take your time and enjoy puzzling your way through more than 120 free puzzles, ranging all the way from easy to very difficult. If you get stuck or make a mistake, the built-in help will get you going again. The help explains the logical reasoning at each step, making it a great way to learn how to solve the puzzles. Use the help as much as you like, it’s also completely free. Yet even with so much free content, you won’t be bothered by ads - Sumaddle is completely ad-free!

2 Dec 2024

Version 1.61.1

This version contains some enhancements to the built-in help and some usability improvements:

- A new setting makes it possible to see a warning symbol next to help actions that will cause points to be lost. This setting can be found in the section “Layout & Appearance”.

- When the help is used to “undo back to where I went wrong” or “clear mistakes only”, any combinations that have been deleted incorrectly are restored automatically. The ability to delete individual combinations can be turned on under “Optional Features” in the settings.

- When a square is tapped a second time, the square is no longer turned into a block if there are already two blocks in the same row or column. This is because it makes no sense to add a third block, if two are already present. This change might help to prevent squares from being filled inadvertently when a square is (re-)selected for the purpose of updating candidate values, or when tapping quickly between squares at the end of a game.

- Previously, if pencil mode was active and a square with pencil markings was tapped, the square would sometimes be converted to a number square with candidate values. This was the case when there were already two blocks in the same row or column. This was not very intuitive, so it no longer happens. Instead, the square now remains in pencilled state.

Version 1.61.1 also includes a correction for the size of overlay sheets on iPads running iPadOS 18. Overlay sheets are used for temporary presentations, such as for the settings.

Quirky, Pack 1

50 out-of-the-ordinary puzzles

USD 0.99

Tricky, Pack 1

50 new DIFFICULT and VERY DIFFICULT puzzles

USD 0.99

Puzzle Generator

Unlimited new puzzles - just go on playing

USD 9.99

Crafty, Pack 1

50 new EASY and QUITE EASY puzzles

USD 0.99

Sneaky, Pack 1

50 new puzzles from QUITE EASY to DIFFICULT

USD 0.99

The developer, Jonathan Buchanan, 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 Not Collected

The developer does not collect any data from this app.

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

Information

Provider

Jonathan Buchanan

Size

23.9 MB

Sumaddle 4+

Logical puzzle

Jonathan Buchanan

Screenshots

Description

What’s New

In-App Purchases

App Privacy

Data Not Collected

Information

Supports

Game Center

Challenge friends and check leaderboards and achievements.

Family Sharing

Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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