Boddle vs Khan Academy Kids

Khan Academy Kids is the best free start in the category for younger kids, whereas Boddle runs K–6 across math, ELA and science. Khan Academy content is geared much younger than Boddle, and the gameplay loses its fun element often around kindergarten, which is right where Boddle picks up.

Side by side

Where does Khan Academy Kids win?

Khan Kids has an independent randomized controlled trial. Boddle is evidence-based and is advancing towards stronger criteria of proof that it drives performance and learning confidence.

Researchers at UMass Amherst ran a randomized, double-blinded study of 49 four- and five-year-olds from low-income households in western Massachusetts. Over 10 weeks, at about 13 minutes a day, pre-literacy scores moved from roughly the 34th percentile to the 47th (UMass Amherst). It was published in the Journal of Children and Media (Arnold et al., 2021). The sample is small and it measures early literacy rather than math. It is still a real RCT, and it is a stronger kind of evidence than Boddle's correlational ESSA Level III brief. 

Free is not a wedge here either. Khan Kids is 100% free, nonprofit, with no ads, no subscriptions, and nothing to sell a student at any point. Boddle is free for teachers and students with subjects never paywalled, although there is a paid tier for extra rewards.

For ages 2 to 4, Boddle isn't an option. Khan Kids starts at 2. Boddle starts at kindergarten.

Early reading is Khan Kids' best subject. Phonics, sight words, more than 400 read-aloud eBooks, and a "Read To Me" mode in English and Spanish. Boddle teaches ELA, and is standard-aligned to the classroom, but is not hyper-focused on emergent literacy.

And it's trusted for good reason. 4.8 out of 5 across roughly 129,000 iOS ratings, an Apple Editors' Choice award, a Parents' Choice Gold award, content built with the Stanford Graduate School of Education, and alignment to Head Start and Common Core (App Store). Common Sense Media's review sums it up as "Creative early-learning activities engage and inspire." (Common Sense Media).

Where does Boddle win?

Boddle wins on everything that happens after 2nd grade (often on the fun aspect beginning in Kindergarten), and on where the teachers have to stand to run it. Those are the two honest differences.

Boddle covers K–6 in one place, with one roster, and highest usage in 3rd and 4th grade. Nobody ages out mid-elementary.

It opens in a browser. Khan Kids is "designed as a mobile-first learning experience," available "via a mobile app on smartphones and tablets" (Khan Kids support). There's no browser version. Chromebooks work, but only through the Google Play Store, and the same page warns that devices opting into Google's Extended Update service "will lose access to the Google Play Store and will no longer be compatible." 

Science is a subject students practice, not a shelf they browse. Khan Kids does have science content, and it's good: National Geographic and Bellwether Media nonfiction on animals, dinosaurs and more. It's reading material. Khan describes the activity library itself as "literacy, math, and social-emotional learning" (Khan Academy blog). In Boddle, science is a standards-aligned subject with practice questions, the same as math and ELA.

And the older students actually choose it. Boddle's game loop, including students battling each other's pets, is built for the elementary student motivation profile, which is a different problem from keeping a 4-year-old delighted. As one teacher put it: "I swear my students asked me to assign it for homework" (Mindi, teacher). Nothing is deducted for a wrong answer either, which matters most for the students who already expect to be marked down.

The honest limits of each

Khan Kids' limits. It ends at 2nd grade, and leaving means a new account on a different platform with a different feel. Free teacher workflows runs through a phone or tablet. There's no browser version. Science is something to read rather than practice. One important exception on the $5: publicly funded programs with PreK classrooms of 200 or more students can get Khan Kids for Schools free for the 2026–27 and 2027–28 school years, dashboard and district reporting included (Khan Academy blog). If that's you, the paid tier isn't a factor for two years.

Boddle's limits. No PreK, so nothing for ages 2 to 4. No book library and no RCT. Boddle is a practice tool, not a curriculum, and it won't fill a reading block. Boddle's questions are timed, so if untimed calm is what you're after, Khan Kids is the gentler room.

And the thing neither of us should decide for you. Which will get students more motivated to practice? We believe that Boddle wins in the “fun” category, but you should let kids decide for themselves.

Frequently asked questions

Is Khan Academy Kids really free? Yes, fully. Khan Academy is a nonprofit, and the Khan Kids app has no ads, no subscriptions and nothing to sell students. The one paid piece is for schools: Khan Kids for Schools costs $5 per student and adds a web-based teacher dashboard, district reporting, live professional learning and an implementation manager. The app itself stays free for teachers and students.

What grade does Khan Academy Kids stop at? 2nd grade. Khan's help center states that activities are aligned to standards for PreK through 2nd grade and that students entering 3rd grade or above should move to the main Khan Academy website with a separate account. Common Sense Media's review describes the content as extending through 1st grade with some 2nd-grade material. Plan on it running out around age 8.

Is Khan Academy Kids the same as Khan Academy? No. Khan Academy Kids is an app for ages 2 to 8 with its own login. Khan Academy is the main website covering roughly 3rd grade through college, also free, also excellent, and a legitimate option for older students. It's a video-and-exercise platform rather than a game, so it tends to suit students who are already willing.

Does Khan Academy Kids teach science? Sort of, and the distinction matters if you're planning a science block. Khan Kids includes science nonfiction books and videos from National Geographic and Bellwether Media on animals, dinosaurs and similar topics. Khan describes its activity library as literacy, math and social-emotional learning, so science is reading material rather than practice. Boddle teaches science as a standards-aligned K–6 subject with questions students work through.

Related content

• 2nd Grade Math Practice and Games: the last grade Khan Kids covers
• Boddle Teaches Science, Too: what science as a practice subject looks like
• 4th and 5th Grade Math: the grades Khan Kids can't reach
• Boddle vs SplashLearn: another free-tier comparison worth reading

Close

Boddle is free for teachers and students, standards-aligned in math, ELA and science across K–6, and about four minutes to set up for a class. You choose whether the adaptive mode meets each student where they are or you assign the standards yourself. Either way, the students keep playing after the bell.