Players learn to make inferences and explain how they know by identifying key details and vocabulary when answering "who", what" "where" "when" and "how" questions. It includes over 10 categories and 500 questions to strengthen verbal reasoning skills. Teachers have reviewed and linked How Do You Know? app to core curriculum standards in the US & UK.

Parents' and Educators' Favorite Features:
Lots of content; Over 10 categories: Places, Activities, Emotions, Conditions & State of Being, People & Occupations, Animals, Time, Events, Holidays, Weather, Geography
"Read to Me" option
Different levels of difficulty and prompts; audio and visual prompts
"Let's Talk About It!" to teach vocabulary and concepts; pre/post-test
Data collection with percentages for "WH" and "HOW" questions
Email reports and share results with parents, teachers, & therapists
100 name capacity; edit to add/delete names
"Listen Again" button
How to Use Page
Developed by experienced speech language pathologist

Skills targeted:
• Questions comprehension of "who", "what", "where", "when" and "how"
• Verbal reasoning strategies to make inferences
• Critical thinking skills to distinguish key details
• Build Vocabulary and semantic knowledge
• Use pictures to build concept imagery
• Recognize and label associated vocabulary
• Practice reading comprehension at sentence level

About the author: Lynn Epstein, MS, ASHA certified speech language pathologist with over 30 years of clinical experience in child language and communication development. How Do You Know? app is based on successful strategies and lessons used with thousands of students to strengthen communication and verbal reasoning skills.

Lynn Epstein can be contacted at
Or check for language boosting ideas!

What’s New

Version 1.6.0


Ratings and Reviews

3.3 out of 5
3 Ratings

3 Ratings

Fairfax 123 ,

Sound back.

I just turn off and start again. It works ok.
Sorry for bothering.

Risa Slater ,

Awesome App!

Finally, an app that not only asks "What is it?" but also, and more importantly, "How (in the heck) do you know?!" There are a lot of categories to choose from but I especially appreciate the emotions, geography, and animals categories. The pictures and sounds are clear and straightforward. It is presented in multiple choice format with an array of 3. The app covers many IEP goals and delves into all areas of language. Highly recommend!!!

Brad A ,

Great for my kid and has helped him be more expressive

Our speech therapist recommended this game/app for our son. I gave it to him in the back seat of our car on the iPad and he loved it! There is a fun elephant sound when he gets questions right and he's learning while playing. He likes it so much he asks for it on his own.

Well worth the ten bucks!


Lynn Epstein
61.4 MB

Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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