Comparison

Reading Speed/Fluency Builder vs E

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

Head to head
About

Reading Speed/Fluency Builder

This app helps children improve their reading speed and fluency through a game-like environment. It offers graduated practice, audio support, and motivational rewards to build confidence and comprehension skills for young learners.

Highlights
  • Graduated reading practice
  • Mastery-based progression
  • Multiple texts per level
  • Progress reporting
  • Audio support for fluent reading
  • Fun reward system
  • Incremental reading levels
Features
Read full description

** Happy Frog Apps is a Mom’s Choice Award Winner! Also featured on FunEducationalApps.com, TeachersWithApps.com, and more! ** Reading Fluency Builder quickly develops your child's reading speed to meet grade level expectations. Reading fluency is a key prerequisite if your child is struggling with reading comprehension. Reading Fluency Builder provides a fun game-like environment that motivates even hesitant learners. What parents say about our awesome apps: *** 5 stars! Brilliant! An app that understands how kids actually learn. Thank you!
 *** 5 stars! My kids love this app because of the fun, silly sentences. I love it because it works!  
 Reading Fluency Builder provides: - Graduated practice starting with simple texts and slower speeds. - Students progress only when they demonstrate mastery. - Students can practice with multiple texts per level. - 'At a glance' reporting shows you instantly how your learner is progressing. - Audio support is provided so learners can hear a fluent model. - Fun Reward Center increases student motivation. - Incremental levels take a student from mid Grade 1 reading speed up to mid Grade 5 reading speed. Our app is based on proven research on the effectiveness of modeled and repeated reading to increase fluency -- but we make it fun! Our apps are designed for and tested by typical and special needs children. Testers include children with Autism and other special needs. Our apps work for them! Our apps are also suitable for adults dealing with aphasia or learning English as a Second Language. 
To evaluate the app, download the free version, which has four free levels. Additional levels and additional players can be accessed with in-app purchases. (All levels can be purchased for $2.99 -- price may change.) 

If you prefer no in-app purchases, download the School Edition of this app, which includes all levels and up to 10 players. We take customer service very seriously! If you ever have a problem or find that we've missed something, contact us at our website and we will do our best to fix the problem.  We collect NO private information in our app. None! Our apps do not allow unrestricted web or social media access. We conform to the Children's Online Privacy Protection Act.

About

E

This app offers an engaging way for children to learn through interactive books. It combines storytelling, proper English, and video content to educate young minds in an entertaining format.

Highlights
  • Interactive books for kids
  • Educational content
  • Storytelling
  • Proper English lessons
  • Video integration
Features
Read full description

The amazing app of learning and entertainment is here. Watch books written by artists that are made for kids! Our app combines the power of great storytelling, proper English, video, and so much more to help teach your children while educating them.

Screenshots

Reading Speed/Fluency Builder4 screens
E3 screens

Verdict

The call

The clearest difference is rating: E at 5.0 against Reading Speed/Fluency Builder's 2.3. Reading Speed/Fluency Builder's advantage is update cadence (every 4 months vs every 11 months) and ratings volume (7 vs 2). On price, ads, in-app purchases and monetization model 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 Speed/Fluency Builder sells 3 one-off in-app purchases and E sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

E holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 7 and 2 respectively.

UpkeepUpdate frequency

Reading Speed/Fluency Builder ships an update every 4 months, E every 11 months. Both last shipped on November 2, 2026.

Scorecard4 real differences · 6 level
Reading Speed/Fluency Builder versus E: the parameters behind the verdict, then further details
ParameterReading Speed/Fluency BuilderE
PriceFreeFree
Rating2.3 (7 ratings)5.0 (2 ratings) — better
Positive reviews16.7% of reviews—
Number of ratings7 — better2
Update frequencyEvery 4 months — betterEvery 11 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.2 — better17.6
Further details — not scored
Size39 MB25 MB
Age rating4+4+
DeveloperJanine TooleJames Braunreuther

Customer experience

Reading Speed/Fluency Builder

All ratings7 ratings
Positive14.3%
Neutral28.6%
Negative57.1%
Written reviews6 reviews
Positive16.7%
Neutral33.3%
Negative50.0%

E

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Reading Speed/Fluency Builder

One-time3
  • Up to 2 Users$1.99
  • Access All Levels$2.99
  • Add up to 10 Users$2.99
7 purchases

E

One-time7
  • 1 E-Cubed Book Coin$0.99
  • 5 E-Cubed Books Coins$4.99
  • 10 E-Cubed Books Coins$9.99
Show 4 more
  • 20 E-Cubed Books Coins$19.99
  • 30 E-Cubed Books Coins$29.99
  • 40 E-Cubed Books Coins$39.99
  • 50 E-Cubed Books Coins$49.99

Questions

Is Reading Speed/Fluency Builder free?
Reading Speed/Fluency Builder is free to download, with in-app purchases available.
Is E free?
E is free to download, with in-app purchases available.
Which has better reviews, Reading Speed/Fluency Builder or E?
E is rated higher. Reading Speed/Fluency Builder averages 2.3 out of 5 from 7 ratings, while E averages 5.0 from 2 ratings.
Do Reading Speed/Fluency Builder or E have ads?
Neither Reading Speed/Fluency Builder nor E shows ads.
Which is updated more often, Reading Speed/Fluency Builder or E?
Reading Speed/Fluency Builder ships an update every 4 months, and E every 11 months. Most recently, Reading Speed/Fluency Builder was updated on November 2, 2026 and E on November 2, 2026.

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