Best Reading Apps for K–5: 10 Teachers Actually Use

Reading is the foundation of everything else a child learns in school. When a student reads well, every other subject gets easier. When they struggle, the effects compound across the entire curriculum. That's why finding the right reading tools matters so much — and why it's frustrating that so many reading apps are more focused on flashy animations than actual literacy skills.

We asked dozens of K-5 teachers which reading apps they actually use and trust. This guide collects their top picks, organized by the reading skill each app targets. Every app below is either free or offers a meaningful free tier.

The best reading app isn't the one with the most features. It's the one your kid actually opens twice a week.

Phonics & Early Reading (Grades K-2)

Starfall

Starfall has been a trusted name in early literacy for over two decades. The free section covers letter recognition, phonics, and early reading with interactive activities that are simple, effective, and distraction-free. It's one of the few early reading platforms that doesn't rely on gamification gimmicks.

Grade range: Pre-K through 2nd

Cost: Free core content, optional paid membership for expanded library

Teacher take: "I've used Starfall for 15 years. It's the one early reading tool I recommend to every parent."

Khan Academy Kids

Khan Academy Kids is a completely free app with no ads and no subscriptions. It covers reading, writing, math, and social-emotional learning through interactive lessons, books, and activities. The reading content includes letter tracing, phonics, sight words, and short stories.

Grade range: Pre-K through 2nd

Cost: Completely free

Teacher take: "It's genuinely free, the content is high quality, and kids can use it independently."

Reading Fluency (Grades 1-4)

ReadWorks

ReadWorks provides a library of nonfiction and fiction passages with comprehension questions, organized by grade level and Lexile score. Teachers can assign passages and track student progress. The digital platform is free for teachers and students.

Grade range: K through 12 (strongest for grades 2-8)

Cost: Free

Teacher take: "The passage library is massive and the comprehension questions are well-written. I use it every week."

Raz-Kids (by Learning A-Z)

Raz-Kids provides leveled readers in a digital format. Students read books at their assessed level, listen to fluent models, and answer comprehension quizzes. The leveled approach helps students build fluency systematically rather than jumping between difficulty levels.

Grade range: K through 5

Cost: Free trial, then paid subscription (many schools provide access)

Teacher take: "The leveling system is the best I've seen. Students can really see their progress as they move up levels."

Reading Comprehension (Grades 2-5)

Newsela

Newsela takes real news articles and rewrites them at multiple reading levels so students of different abilities can read about the same topic. Each article includes comprehension quizzes. The free tier provides limited articles per month, which is enough for supplemental use.

Grade range: 2nd through 12

Cost: Free tier with limited articles, paid for full access

Teacher take: "My students love reading about real current events. The leveling feature means everyone can participate in the same discussion."

CommonLit

CommonLit offers a large library of free reading passages — fiction, nonfiction, and poetry — with embedded comprehension questions and discussion prompts. Passages are tagged by grade level, genre, theme, and reading standard. The teacher dashboard tracks student performance.

Grade range: 3rd through 12

Cost: Free

Teacher take: "The best free reading comprehension resource I've found. Period."

Building a Love of Reading (All Grades)

Epic

Epic is a digital library of over 40,000 children's books, audiobooks, and educational videos. The free school plan gives teachers and students unlimited access during school hours. The home plan offers limited free reading time.

Grade range: Pre-K through 6

Cost: Free for educators during school hours, limited free access for families

Teacher take: "It's like having a library in every student's pocket. The audiobook option is a genuinely useful for struggling readers."

Storyline Online

Storyline Online features videos of actors reading children's picture books aloud, with illustrated animations. It's a project of the Screen Actors Guild, and the production quality is excellent. Each video includes suggested activities from educators.

Grade range: Pre-K through 3rd

Cost: Completely free

Teacher take: "Perfect for read-alouds when I need a break, or for parents looking for high-quality storytime at home."

Matching the Right App to Your Student

Not every reading app works for every child. Here's how to pick the right one:

For students who are just learning to decode: Start with phonics-focused apps like Starfall or Khan Academy Kids. These build the foundational skills that everything else depends on.

For students who can decode but read slowly: Fluency tools like Raz-Kids help students build speed and automaticity through repeated practice with leveled texts.

For students who can read fluently but struggle to understand: Comprehension-focused platforms like CommonLit and Newsela provide structured practice with text-dependent questions.

For students who can read but don't want to: Choice is everything. Epic's massive library lets students browse and choose books that interest them — which is how most lifelong readers are made.

For all students: Read together. No app replaces the experience of an adult reading with a child. Even five minutes a day makes a measurable difference.