Other pets just eat your homework. This one helps you ace it!

Puku is a fun and rewarding way for you to learn vocabulary. Play ongoing leveled lists, words related to a category of interest like Food or Mythology, or create your own list from classwork assignments—quickly and easily with pre-populated definitions from Merriam-Webster! The app features Puku, a virtual pet that grows as you master new words, and evolves each time you cross a milestone in an engaging display that celebrates your progress.

Every player has a personalized experience guided by adaptive learning technology. The app responds directly to kids’ performance ensuring that learning is efficient and motivating: players spend their time on new and challenging vocabulary and get immediate corrective feedback when necessary to help them get back on track.

From Merriam-Webster, America’s most-trusted dictionary, Puku is the best vocabulary-building app for kids ages 8 and up. Learn thousands of words, such as curious, fatigue, boisterous, and indelible—and feel good about your screen time!

With Puku you can:
• Develop your personal vocabulary path, and have fun doing it!
• Improve every day with ongoing, leveled lists
• Play custom collections—from Food and Holidays to Books and Mythology—and learn words associated with areas of interest or study
• Create your own lists, quickly populated with Merriam-Webster definitions, either to help with words you are learning in class or to master words that will awe and stump your friends
• Share custom word lists with friends and classmates
• Access trusted, age-appropriate definitions from Merriam-Webster

Puku for teachers:
Quickly create and share word lists with your students, automatically populated with trusted, authoritative Merriam-Webster definitions. Your students can play any list you create, for free.

We appreciate all feedback! Please send comments to, and if you love the app, please leave a review!

What’s New

Version 1.12

Store info update

Ratings and Reviews

3.5 out of 5
64 Ratings

64 Ratings

Yellowbfly ,

Has potential, needs a little more work

Enhancing and fun to play overall. However there are a few significant shortcomings that preclude me from giving it more stars.

First, this is made by the dictionary - why the limited number of words? I have a profile for myself and quickly ran out of challenges. Huh?

Second, my kids are 6, 10, and 13 - their lists and mine are almost the same (if not exactly the same). I love learning new vocabulary, so I was optimistic that I would have a good challenge.

Finally, there should be a way to hear the word pronounced and easily get a definition. I’d also like to see some sort of memory challenge / revisit your old words pop up at certain intervals. Or possibly ones that were tricky.

Optimistic that the developer is adding some of these features, especially for a paid app. Looking forward to improvements!

Newbery book reader ,

Will Not Work after I paid for annual subscription

My 6 year old son and I found the Puku App yesterday, tried the free version, and loved it! We went through 4 words, and then it stopped working. We tried again the next day with no luck. We deleted the app and restarted my phone. And the app still wouldn't work. Was it because I didn't pay for the subscription? We decided to pay for the annual subscription, and still no luck! This is very sad. The app worked just beautifully the day prior. I have 4 kids ages 6 to 15, and thought this would be a great way for them to improve their vocabulary.

Developer Response ,

Hi, we're sorry to hear about this experience you've had with the Puku app! We just recently resolved a bug in the app that we believe was causing the error you describe. Please try the app again, and reach out to us at if you have any trouble!

nnavidson ,

Cute, But Limited Word Lists

It’s a cute App with lots of promise. Adding words that you want to learn is easy, but they are limited to one list. Once you complete a list, you can’t modify it. If you want to make a new list, you have to do so from scratch. If adding your own words was easier, I’d give this 5 stars.

App Privacy

The developer, Merriam-Webster, Inc., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

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


  • Family Sharing

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

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