† Pricing note: Prices are checked against each vendor's official website or help center at the time of writing, but vendors change plans and prices at any time. Always confirm current pricing on the vendor's own site before purchasing. How we review and verify →
1
Khan Academy Kids
Best all-in-one
Khan Academy Kids offers free, comprehensive early learning content covering reading, math, and more for children ages 2-8.
Best for:Free comprehensive early learning with vocabulary woven into readingPrice:Free†Grades:Ages 2-8Platforms:iOS, Android, Amazon
Pros
Completely free
Comprehensive curriculum
No ads
Cons
Only goes to age 8
Not specialized for spelling
No web version
2
Reading Eggs
Best reading + vocab
Reading Eggs provides a comprehensive reading program for children ages 2-13 with lessons, games, and books.
Best for:Vocabulary growth through structured reading program for ages 2-13Price:$99.99/yr†✓ verified 2026-08-06Grades:Ages 2-13Platforms:All platforms
Pros
Wide age range
Comprehensive program
Includes spelling component
Cons
Expensive
Can be overwhelming
Our pick
3
SpellingJoy
Best free
SpellingJoy is a 100% free spelling practice platform for K-6 students. Unlimited spelling games, unlimited tests, 134+ word lists, custom list creation, and progress tracking - all completely free with no subscriptions and no hidden costs.
Best for:Free vocabulary building through spelling practice with 134+ word listsPrice:100% Free†Grades:K-6Platforms:Web
Pros
100% free - unlimited games, tests, and lists
No subscription or hidden costs ever
K-6 curriculum with 134+ word lists
Cons
Web-only (no native mobile apps yet)
Classroom features coming soon
4
HOMER
Best personalized
HOMER creates personalized reading journeys for children ages 2-8 based on their interests and skill level.
Best for:Adaptive vocabulary and reading paths tailored to interestsPrice:$80/yr†Grades:Ages 2-8Platforms:iOS, Android
Pros
Personalized learning path
Comprehensive reading program
Good for early readers
Cons
Expensive
Limited age range
5
Starfall
Best basic vocabulary
Starfall teaches reading through systematic phonics with engaging activities for Pre-K through 5th grade.
Best for:Free foundational vocabulary through phonics and storiesPrice:$35/yr†✓ verified 2026-07-29Grades:Pre-K-5Platforms:Web, iOS, Android
Pros
Affordable
Good for early readers
Systematic phonics approach
Cons
Limited for older students
Dated interface
6
ABCmouse
Best comprehensive curriculum
ABCmouse offers a full early learning curriculum with thousands of activities for children ages 2-8.
Best for:Full early learning curriculum with vocabulary across subjectsPrice:$45-59/yr†✓ verified 2026-07-29Grades:Ages 2-8Platforms:All platforms
Pros
Comprehensive curriculum
Engaging content
Progress tracking
Cons
Only to age 8
7
Teach Your Monster to Read
Best free game
Teach Your Monster to Read uses a game-based approach to teach systematic phonics. Free on web, $4.99 mobile app. Covers first 2 years of learning to read.
Best for:Free adventure-based word recognition and vocabulary buildingPrice:Free (web) / $8.99 (app, moving to subscription)†✓ verified 2026-08-07Grades:Pre-K-1 (Ages 3-6)Platforms:Web (free), iOS ($8.99), Android ($8.99), Amazon
Pros
Completely free on desktop
BAFTA award-winning
Systematic synthetic phonics
Cons
Limited age range (3-6)
British accent audio
Mobile apps not free
Frequently asked questions
What is the best vocabulary app for 1st grade?
Khan Academy Kids leads our list, combining vocabulary with reading and math in a broader free curriculum. SpellingJoy is the best free option for building vocabulary through spelling practice: it offers 134+ curated word lists including Dolch and Fry sight words, spelling games, and progress tracking - all completely free.
How many words should a 1st grader know?
By the end of 1st grade, most children know between 3,000 and 4,000 words and can read approximately 300-500 sight words. Regular practice with vocabulary apps for 15-20 minutes a day can help reinforce and expand their word knowledge.
Are free vocabulary apps as good as paid ones?
Yes - several free vocabulary apps rival paid options. SpellingJoy offers unlimited word lists and games at no cost, and Khan Academy Kids provides a comprehensive free curriculum. Paid apps like Reading Eggs and HOMER add adaptive learning and richer multimedia, but free apps cover the fundamentals well.
How can I help my 1st grader build vocabulary at home?
Pair daily reading with a vocabulary app like SpellingJoy for 15-20 minutes. Talk about new words during meals and errands, play word games like rhyming or "I Spy," and encourage your child to use new words in sentences. Consistent, low-pressure exposure is more effective than drilling.
Our Verdict
For an all-in-one learning experience, Khan Academy Kids leads this list, weaving vocabulary into reading, math, and social-emotional lessons - completely free with no ads.
SpellingJoy is the best free option for building vocabulary through spelling practice - 134+ word lists including Dolch and Fry sight words, unlimited spelling games, and progress tracking with zero cost and no subscription.
If you want adaptive, interest-driven vocabulary growth, HOMER personalizes reading and word-learning paths for ages 2-8. More word-practice titles sit in our spelling app library.
Try SpellingJoy free today - unlimited vocabulary and spelling practice, 134+ word lists, and progress tracking at no cost.
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About the Author
SpellingJoy Team
The SpellingJoy team is dedicated to creating free, high-quality spelling resources for K-6 students and their families. We test every app we review and provide honest assessments to help parents make informed decisions.