Solve these fiendish sliding number puzzles using only your wits, logic and strategy.

Slide numbers to match patterns - not as easy as it looks!

140 puzzles to win, can YOU beat Professor Addkins?

A great brain game suitable for young and old.

The entire game is FREE to play, and contains in-app purchases* for non-essential boosters and early unlocks.

*** Previously featured in the App Store's Best New Games ***

"Charming throughout...has that Layton-esque quality to it" (4 stars) -

“Simply put, SUM IDEA is an ingenious and seamless number puzzle game that will surely put your mind through its paces.” (9/10) -

*In-app purchases can be disabled within the Settings App on your device under Settings > General > Restrictions

What’s New

Version 1.42

This app has been updated by Apple to use the latest Apple signing certificate.

To celebrate SUM IDEA reaching the milestone of a quarter of a MILLION downloads we've added even more FREE animated stickers for use in iMessage! Enjoy!

Ratings and Reviews

4.9 out of 5
14 Ratings

14 Ratings

Eric1212r ,

Very Good Game - Especially if you like math

I think this game is very well designed, and the mechanics are fun. It makes me think mathematically, and I like that each level is quick (they do not require a ton of time to complete).

Matt P101 ,

Super Addicting

I don't have many games downloaded on my phone and this is one of few that I really enjoy. The concept is simple, but the game isn't. Yes some levels are easier than others but overall it's a fun challenge that's very addicting.

I ultimately gave a rating of 4-stars because of the wait time at different intervals (and I'm not paying to unlock immediately; it's a waste IMO).

One final note -- level 97 is not a "fix." There's a way of beating it.

An unsatisfied frugal customer ,

Great game. Unfortunately...

Unfortunately after beating 40 levels, you either make an in app purchase, or wait 4 days. I can understand it is a free game and that the makers want to make some money. But coming from someone who is perfectly willing to wait for a bit rather than spend a couple bucks, 4 days is a lot of time. A lot. As in enough to make me delete it. This game deserves 5 stars, the company who made it... deserve much less.

App Privacy

The developer, Twiddly, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


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