Take your Lean problem-solving and critical thinking skills to the next level.
A3 Thinker will help you to systematically frame, analyze and eradicate your most critical problems in your workplace and personal life.

This app features a unique set of 65 brainstorming cards with hundreds of questions designed to guide you in each step of an effective problem-solving sequence.

Check out the screenshots and see for yourself. You will not be disappointed.

NOTE: This is NOT a data-entry app where you input your A3 Reports.
Why? Because the truly hard part about A3 Thinking is... well... the thinking.

So, rather than merely simulating a paper model and forcing you to cram information on a relatively small device, A3 Thinker works with you side-by-side.
It doesn't matter if you write reports on an electronic template, a whiteboard, or the more traditional paper & pencil.
Keep using what YOU find most effective to gather information, share insights and gain consensus!
A3 Thinker's virtual cards will help you overcome any initial block and prompt you with the right questions when you need them most.

"It's like working side-by-side with a sensei on the production floor."

Use A3 Thinker to frame problems with improved clarity, accuracy, precision, relevance, depth, breadth, logic, and significance.
Choose a section in your report that needs work, read one or more relevant cards and be prepared to be stimulated and challenged!

With its focused questions, A3 Thinker will help you expand your circle of influence and engage teams and co-workers in efficient problem-solving conversations.

For: Managers, teams, change agents, coaches, entrepreneurs, and anyone else who'd like to systematically solve problems and move from where they are to where they need to be.

A3 Thinker is a versatile tool that can be used in conjunction with books or typical problem-solving classroom training.
More importantly, it can help you well AFTER the "feel good" effect of the training has faded away and you face your most crucial problems in your workplace and personal life.
A3 Thinker's critical thinking and Socratic questioning cards will help you eradicate problems, develop new and existing reports, facilitate and mentor.

What’s New

Version 1.3

Fixed bug: "The applications looses its menu when exiting the overview panel."

Ratings and Reviews

4.5 out of 5
44 Ratings

44 Ratings

jcdiaztorres ,

Great for industrial engineers & managers

This app does help in the A3 development process. It offers the user a fair amount of information to work with.

G2 Analyst ,

Just static cards?

I thought this might at least be as good as Creative Whack Pack, which prompts you for responses to thought provoking questions.

Instead, this is more like a static set of cards. The cards are useful, but unless I’m missing an essential feature, there is no way to organize specific problems or notes. The authors account for this with a lame explanation rather than spend a few days on app development to provide such an basic but essential feature.

Hopefully they will provide this in an update, since the cards are themselves good. This app had good potential.

Climax510 ,

A must have for business strategist

You gotta have it in your tools of mastery.


Claudio Perrone
3.1 MB

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



Age Rating
Rated 4+
© 2013 Claudio Perrone


  • Family Sharing

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

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