Comparison

Reading Eggs vs WordBuilder Intervention

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Reading Eggs

This program helps children aged 2-13 develop reading and math skills through interactive games, lessons, and e-books. It offers a comprehensive curriculum based on scientific research, designed by educators to foster phonics, comprehension, and numeracy.

Highlights
  • Interactive reading games
  • Guided reading lessons
  • Over 4,000 e-books
  • Phonics and comprehension focus
  • Early numeracy skills
  • Progress tracking dashboard
Features
Read full description

Reading Eggs is the multi-award winning learning program that helps children learn to read. Based on scientific research and designed by experienced elementary teachers, it’s proven to help kids learn to read using interactive reading games, guided reading lessons, fun activities, and over 4,000 e-books. Reading Eggs has already helped over 20 million children worldwide learn to read. Access all our premium learning programs for up to four children: • Reading Eggs Junior (ages 2–4): Toddlers build pre-reading skills such as phonemic awareness and alphabet knowledge with fun activities, games, videos, and read-aloud books. • Reading Eggs (ages 3–7): Children take their first steps in learning to read, covering phonics, sight words, spelling, vocabulary, and comprehension. • Fast Phonics (ages 5–10): A systematic, synthetic phonics program to help emergent and struggling readers build key phonics skills. • Reading Eggspress (ages 7– 13): Continues the learning journey by helping children learn to read for meaning and enjoyment. • Mathseeds (ages 3–9): Develops essential early numeracy skills, covering numbers, measurement, shapes, patterns, and more. ABOUT THE READING EGGS LEARN TO READ APP • TRUSTED: used in over 12,000 schools and trusted by elementary educators. • SELF-PACED: children are matched to the perfect level and progress with self-paced, one-on-one lessons. • HIGHLY MOTIVATING: the reward system consists of golden eggs, collectable pets, and games, motivating children to keep learning. • RESEARCH-BASED: based on scientific research and the most up-to-date learning principles on the most effective way children learn to read. • COMPREHENSIVE: Reading Eggs is a complete learn to read system for children aged 2–13 and covers the five essential components of reading: phonics, phonemic awareness, vocabulary, fluency, and comprehension. • PROVEN RESULTS: our hundreds of testimonials, multiple awards, 91% success rate AND money-back guarantee gives you the confidence in knowing that your child will learn to read using the most effective and results-driven online reading curriculum. • SEE REAL PROGRESS: see instant results in your very own parent dashboard and receive detailed progress reports, which show you exactly where your child is improving and where extra attention is needed. • LEARN TO READ ON THE GO! Your child can learn to read anytime, anywhere on a desktop or tablet device. Users must log in with their account details to access Reading Eggs. Min requirements: • Wireless internet connection • iPad (5th Generation), iPad Air 2, iPad Pro 1st Generation • iPad Mini 4 • iPhone - last 5 models of iPhone • OS Version - iOS 15.8+ • An active trial or subscription Recommended devices and iOS version: • Latest iPad, Latest iPad Air, Latest iPad Pro • Latest iPad Mini • Latest iPhone • Latest iOS Version Note: Teacher accounts are currently not supported For assistance or feedback email: info@readingeggs.com More Information: • Up to 4 children are covered under a single family subscription • Each Reading Eggs and Mathseeds subscription provides access to Reading Eggs Junior, Reading Eggs, Fast Phonics, Reading Eggspress and Mathseeds • Each Reading Eggs subscription provides access to Reading Eggs Junior, Reading Eggs, Fast Phonics and Reading Eggspress • The first month of a monthly subscription is free for new customers • Subscriptions renew automatically; your App Store account will be charged unless you cancel at least 24 hours before the end of the current period • Cancel anytime in your App Store account settings Privacy Policy: http://readingeggs.com/privacy/ Terms and Conditions: http://readingeggs.com/terms/

About

WordBuilder Intervention

This free educational tool helps adolescent struggling readers learn to deconstruct, construct, and spell complex words. Designed for direct instruction in small groups or one-on-one settings, it offers a year's worth of practice with motivating elements.

Highlights
  • Deconstruct multisyllabic words
  • Build and spell words
  • Research-based instruction
  • Motivating coin rewards
  • Academic Word List integration
  • 540 words and sentences
Features
Read full description

WordBuilder Intervention is a research-based, free application used to teach adolescent struggling readers how to break down, build, and spell multisyllabic words. WordBuilder Intervention is a truly unique and valuable instructional tool that teachers and parents will find effective for grades 6-12. WordBuilder Intervention was created to be used by teachers during direct instruction. It is designed to be used within a small group, or for one-on-one instruction. Please watch the instructional videos on the WordBuilder Intervention website to learn more. Save up to 50 student accounts on 1 device. Download for free today! Developed by a team of experts • Created by California State University, Northridge for the Literate Adolescents Intervention Project. • Designed by digiCOACH, Inc. • Produced under the California Adolescent Literacy Initiative at Napa County Office of Education in collaboration with the California Department of Education, Special Education Division through a State Personnel Development Grant (Award #H323A170011) from the U.S. Department of Education, Office of Special Education Programs. Motivation embedded in the application • Students earn coins for mastering multisyllabic words • Challenging words allow older students to practice phonics skills at an appropriate level • Many words are taken from the Academic Word List (AWL) • Sentences in more advanced units excerpted from national newspapers A year’s worth of practice in one application! • 540 multisyllabic words and sentences • A systematic scope and sequence • Free instructional program with videos and “how to” tips available at www.wordbuilderapp.com.

Screenshots

Reading Eggs4 screens

Verdict

The call

Reading Eggs and WordBuilder Intervention both sit at 4.7 stars, but that hides the real split: 100% of WordBuilder Intervention's written reviews are positive against 55% of Reading Eggs's. WordBuilder Intervention also leads on in-app purchases (none vs 4) and iOS requirement (11.0 vs 15.0). Reading Eggs's advantage is update cadence (every 4 weeks vs every 11 months) and ratings volume (7.4K vs 6). On price, rating and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Reading Eggs sells 4 in-app purchases, starting at $9.99 per month. WordBuilder Intervention asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Reading Eggs against 4.7 for WordBuilder Intervention. That said, the two scores are not equally well evidenced: Reading Eggs has 7.4K ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 55% of Reading Eggs's written reviews are positive against 100% of WordBuilder Intervention's.

UpkeepUpdate frequency

Reading Eggs ships an update every 4 weeks, WordBuilder Intervention every 11 months. The most recent releases landed on October 18, 2026 and October 3, 2026 respectively.

Scorecard8 real differences · 3 level
Reading Eggs versus WordBuilder Intervention: the parameters behind the verdict, then further details
ParameterReading EggsWordBuilder Intervention
PriceFreeFree
Rating4.7 (7.4K ratings) — better4.7 (6 ratings)
Positive reviews54.9% of reviews100.0% of reviews — better
Number of ratings7.4K — better6
Update frequencyEvery 4 weeks — betterEvery 11 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#119 — better—
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS15.011.0 — better
Further details — not scored
Size97 MB43 MB
Age rating4+4+
DeveloperBlake eLearningNapa County Office of Education

Customer experience

Reading Eggs

All ratings7,409 ratings
Positive92.7%
Neutral2.1%
Negative5.2%
Written reviews921 reviews
Positive54.9%
Neutral12.2%
Negative32.9%

WordBuilder Intervention

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Reading Eggs

Reported bugs

3 issues
  • Login issues and account problems
  • Incompatibility with certain iOS versions
  • Lessons not saving progress properly

Requested features

5 requests
  • Ability to disable background music
  • More content for older kids
  • Improved multi-user management
  • Offline mode for lessons
  • Better integration with school curriculum

WordBuilder Intervention

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Reading Eggs

Subscriptions4
  • Reading Eggs Monthly1 Month trial$9.991 Month
  • Reading Eggs+Mathseeds Monthly1 Month trial$13.991 Month
  • Reading Eggs Yearly$69.991 Year
Show 1 more
  • Reading Eggs+Mathseeds Yearly$99.991 Year
None

WordBuilder Intervention

No in-app purchases

Questions

Is Reading Eggs free?
Reading Eggs is free to download, with in-app purchases available.
Is WordBuilder Intervention free?
WordBuilder Intervention is free to download, with no in-app purchases.
Which has better reviews, Reading Eggs or WordBuilder Intervention?
Reading Eggs is rated higher. Reading Eggs averages 4.7 out of 5 from 7.4K ratings, while WordBuilder Intervention averages 4.7 from 6 ratings.
Do Reading Eggs or WordBuilder Intervention have ads?
Neither Reading Eggs nor WordBuilder Intervention shows ads.
Which is updated more often, Reading Eggs or WordBuilder Intervention?
Reading Eggs ships an update every 4 weeks, and WordBuilder Intervention every 11 months. Most recently, Reading Eggs was updated on October 18, 2026 and WordBuilder Intervention on October 3, 2026.

Other comparisons