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Sumaddle 4+

Logical puzzle

Jonathan Buchanan

    • 4.9 • 710 Ratings
    • Free
    • Offers In-App Purchases

Screenshots

Description

The acclaimed logic game for fans of challenging puzzles. Here's what some reviewers have been saying:

• “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

Known by the names Doppelblock and Smashed Sums, this type of logic puzzle was first seen in the Japan Puzzle Championship 2006. On paper, the puzzles can be pretty bewildering 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. Even with so much free content, you won’t be bothered by ads - Sumaddle is completely ad-free!

What’s New

Version 1.60.1

Two new packs of quirky puzzles and a new pack of premium 9x9 puzzles, along with some other small improvements. The changes in detail:

- Three new packs of puzzles have been added in this version: 2 packs of quirky puzzles and a pack of premium 9x9 puzzles. These special types of puzzle are the hardest to generate using the built-in puzzle generator, so the packs offer a more convenient way to play these sorts of puzzle.

- The difficulty ratings for puzzles in the existing quirky packs and 9x9 pack have been re-assessed and revised in some cases. The aim is to ensure that the difficulty ratings for puzzles in these categories are consistent. The new assessment is based on an evaluation of the logic that is needed to solve the puzzles. The puzzles themselves have not changed, so the revised difficulty ratings only affect the scoring. Some packs have also been re-ordered a little.

- When full dark mode is in operation and a puzzle starts with pre-filled blocks, the blocks can be seen more clearly against the background of the empty puzzle. Pre-filled blocks only occur in 9x9 puzzles generated by the puzzle generator.

- More improvements to the way the difficulty is estimated for new puzzles generated by the puzzle generator.

- A fix for issues with scrolling when switching between puzzle pack categories.

- A fix for the way candidate values are added or removed from a group of squares for the case of when a previous update left the squares with less candidates than number of squares.

Version 1.60.1 contains some additional small changes:

- Further improvements when estimating the difficulty of a new puzzle and when scrolling to position in the context of puzzle packs.

- A change to the follow-up page when a puzzle in the Challenge Trail or a puzzle pack is paused during play. Instead of returning straight back to the overview page as before, the page for a paused puzzle is now shown. This makes it easier to resume play. It also makes it more likely that the previously played steps can still be undone one by one. This flow is the same as how it works when playing puzzles generated by the puzzle generator.

Ratings and Reviews

4.9 out of 5
710 Ratings

710 Ratings

preiring ,

Perfectly challenging

Sumaddle is a great game for fans of number puzzles. I was looking for something that was a little more challenging than sudoku, and this game really delivers. I was more than happy to pay the couple dollars for the extra puzzle sets and the endless puzzle option, and it’s continued to keep me entertained for several months.

My only criticism is that I sometimes get penalized for “using help” even when I haven’t asked for a hint. It seems to happen when I am trying to remove a number from the possible options in a box, and I double tap the number. If I’m too slow, the game thinks I meant to put that number in, it tells me that the number is not a possible option for that row’s sum, and then I get docked points. It can be a bit of a killjoy when you’re proud of finishing a puzzle, and then you get the notification, “Your score would have been higher if you hadn’t used hints.”

Other than that, it’s still a 5-star game, and it will remain a staple on my phone.

Developer Response ,

Hi preiring and thank you for your great review!

Interested by your comments about difficulties with number elimination using double tap. The double tap does not need to be done quickly, you can actually take as long as you like. So I'm wondering if the problem might be, that you're missing the number altogether with your second tap?

UPDATE: Just to let you know that version 1.29.0 has gone live in the App Store today with some improvements to button sizing. This should make the buttons easier to hit or, more to the point, harder to miss. The change benefits large devices the most (larger iPhones and iPads), hope this includes you and you find the problem happens less. Thanks again for your helpful feedback which is what prompted this change!

Ps. The FAQ at the support site provides more detail about how using the help can impact the scoring, if you're interested. A link to the FAQ can be found by tapping the info icon below the main menu.

Paise19 ,

Enjoyable and Helps You Build Your Logic Skills

One of the best aspects about this game is the hint function! Starting with just telling you whether everything on your board looks correct or if there appears to be an error somewhere (if so, you get the choice of just removing the wrong bits, restarting from scratch, or undoing some of your last moves and seeing if that fixes things), asking for more of a hint tells you what row or column to look at for your next move and shows you the possible combinations of numbers that equal the sum for that column or row, and asking for additional help pencils in the available options for each cell in that row or column, with the option to view an explanation of how you can come to such conclusions. The only downside is there is no option to selectively pencil in notes for yourself beyond whether something is a number or a block. Sometimes I can eliminate certain options for a cell myself, but without being able to selectively pencil in numbers, I can’t keep track of those unless I keep them in my head (difficult to do when I still see those eliminated options penciled in) or write them down on paper. Please add an option to shift between pencil/notes and pen/confirmed modes!

Developer Response ,

Hello Paise19 and thank you for your positive feedback! I am pleased to let you know that the app does in fact have a pencil mode. Previously, this was only available to Random Play players. However, as of version 1.18 it is now available to all players! This version has gone live in the App Store today. I hope it gives you the functionality you were looking for.

O'Vera ,

Updated Review

I’m updating the review to 5 stars as the developer reached out to me right away offering help. I checked everything, it’s now all good!!! I’m so relieved. I have reset all my puzzles (a few hundred of them as I purchased a lot), so that I can solve them again without losing points I wasn’t supposed to lose in the first place. Thank you!! Enjoying the game again :)

OLD: I would have happily given this game a 5-star review, but they keep deducting points for something I didn’t even do — I do not use help or hints!!! If I make a mistake, let me find it myself; only deduct points if I actually clicked the “?!” button. It’s ridiculously demotivating, especially if I click something by accident. I have purchased all the extra packages — I like the concept of the game and how it makes me think. But come on, I did not use help if I did’t use the “?!” button!!!

Developer Response ,

Hi O'Vera. Thanks for your feedback. You are quite right - if you do not use the help then there should be no points penalty. I would be happy to look into the scoring issue if you would be so kind as to send a screenshot of the score and help feedback that gets shown after completing a puzzle. You can do this using the contact form at the support site. The support site also has a FAQ page on help and scoring, which gives more insight into how the scoring works. Links to the contact form and the FAQ can be found if you tap the info symbol below the main menu. EDIT: Thanks for updating your review, much appreciated!

In-App Purchases

Quirky, Pack 1
Quirky, Pack 1
50 out-of-the-ordinary puzzles
$0.99
Tricky, Pack 1
Tricky, Pack 1
50 new DIFFICULT and VERY DIFFICULT puzzles
$0.99
Puzzle Generator
Puzzle Generator
Unlimited new puzzles - just go on playing
$9.99
Crafty, Pack 1
Crafty, Pack 1
50 new EASY and QUITE EASY puzzles
$0.99
Sneaky, Pack 1
Sneaky, Pack 1
50 new puzzles from QUITE EASY to DIFFICULT
$0.99

App Privacy

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, for example, based on the features you use or your age. Learn More

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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