Comparison

Main Idea vs Learn Grammar 2nd Grade

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

Head to head
About

Main Idea

This app helps children in grades 2-5 develop reading comprehension skills by focusing on identifying the main idea of sentences. It uses a fun, game-like approach with step-by-step learning and rewards to keep kids motivated. Designed by educators, it's suitable for both typical and special needs children.

Highlights
  • Step-by-step skill building
  • Game-like environment
  • Frustration-free learning
  • Reward Center for motivation
  • Parental review and reporting
  • Over 600 examples
  • Designed by teachers and researchers
Features
Read full description

** Featured on Appolicious.com & iHeartThisApp.com ** 'Main Idea -Sentences' helps kids who have trouble with reading comprehension. Identifying the main idea is a key part of reading comprehension. 'Main Idea -Sentences' builds this comprehension skill in a fun, game-like environment. The skill is developed step-by-step until mastery. *** Happy Frog Apps is a Mom's Choice Award winner! *** ***** 5 Stars - Thank you for this app! Other software I’ve used has moved too quickly for my son. This one worked! Can’t wait for the next Main Idea app…it’s coming, right? ***** 5 Stars - This app is one the best education apps I have used with my little one. It really helps to improve his reading abilities. He is obsessed with passing the levels and it never let him disappointed. One of the few apps that worth to upgrade to premium version. 'Main Idea - Sentences' is designed for children in Grades 2-5 who can read the words, but don't understand what they read. Beginning readers in earlier grades can also benefit from the targeted skill development. 'Main Idea - Sentences' develops the skill of knowing what a sentence is about. This skill must be firmly established before a child can determine what a paragraph or page is about. Key Benefits: - Builds comprehension skills step-by-step until mastery. - Incremental learning. New levels are unlocked only when your child is ready. - Frustration-free learning. Your child will always be guided to the correct answer. - Fun and engaging Reward Center to increase motivation. - Easy parental review. Just check out the stars to see how your child is doing. - Contains over 600 examples, with content designed by professional teachers and researchers. - Advanced levels include timers to ensure fluency. Research shows fluency in the foundation skills is critical to reading comprehension. - Can be used independently (just hand it over: your child will know what to do!) or with a therapist/parent for reading intervention. - Provides extensive reporting for up to 10 students to suit the needs of parents, teachers and therapists. 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! To evaluate the app, download the free version, which has 4 free levels. Additional levels and additional players can be accessed with in-app purchase. If you prefer no in-app purchases, download the School Edition of this app. While you're thinking about reading, check out our other apps that target WH questions, inferencing and answer identification skills. Learn more about reading comprehension and research at our website www.HappyFrogApps.com. Drop us a note, we'd love to hear from you! 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 are a member of the Moms With Apps program that promotes privacy in children's apps. We collect NO private information in our apps and our apps do not allow unrestricted web access.

About

Learn Grammar 2nd Grade

This app helps 2nd graders improve grammar, reading, and writing skills through interactive lessons and AI-powered practice. It offers personalized instruction and progress tracking for parents and teachers.

Highlights
  • 48 interactive lessons
  • AI-powered adaptive practice
  • AI-generated teachers
  • Gamification features
  • Progress tracking
  • 5 student profiles
Read full description

Attention parents! Is your 2nd grader struggling with grammar, reading, or writing? Unlock their full potential with Learn Grammar 2nd Grade - the ultimate learning companion that's revolutionizing how kids master essential language skills. Imagine your child confidently tackling complex sentences, effortlessly identifying parts of speech, and writing with clarity beyond their years. That's the power of Learn Grammar 2nd Grade. Developed by expert educators and cutting-edge technologists, our app offers: • 48 engaging, interactive lessons that make learning fun • AI-powered adaptive practice that adjusts in real-time to your child's needs • World's first AI-generated team of teachers for personalized instruction • Gamification features that keep kids motivated and excited to learn • Comprehensive progress tracking for parents and teachers But don't just take our word for it. Here's what parents are saying: "My daughter's writing improved dramatically after just a few weeks!" "Finally, an app that actually teaches instead of just entertaining!" Ready to transform your child's grammar skills? Download Learn Grammar 2nd Grade now and start your free 7-day trial. For just $14.99/month after that, you'll unlock full access to all 15+ Class Ace apps, covering essential 2,500+ skills from 1st through 4th grade, as well as 20+ AI educational tools. Don't let your child fall behind. Give them the gift of strong language skills that will serve them for life. Download Learn Grammar 2nd Grade today and watch your little one become a grammar whiz! P.S. With our risk-free trial and easy cancellation, you've got nothing to lose and everything to gain. Join thousands of satisfied parents and start your child's journey to grammar mastery now! ======= Subscription Info: • Unlimited access to all Class Ace lessons and all apps, lessons, and AI tools $14.99 / month after a 1 week free trail and includes 5 student profiles. • Cancel Anytime: You won't be charged if you cancel before the end of the trial period. • Renewal: Auto-renewal may be turned off anytime from your Apple Subscription Manager. Subscriptions automatically renew unless they are turned off at least 24 hours before the end of the current period in account settings. Renewals are charged within 24-hours preceding the end of the current period. Payment is charged to your iTunes Account at confirmation of purchase. Subscriptions are managed by the user. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to Learn Grammar by Class Ace, where applicable. You can access Learn Grammar without a subscription, but will be limited to 5 free lessons. ======= Help & Support Problems, questions, or want to get in touch? Contact us at support@classace.io Links: Terms of Service: https://classace.io/terms Privacy: https://classace.io/privacy

Screenshots

Main Idea4 screens
Learn Grammar 2nd Grade4 screens

Verdict

The call

The clearest difference is rating: Learn Grammar 2nd Grade at 4.8 against Main Idea's 3.8. Learn Grammar 2nd Grade also leads on update cadence (every 10 days vs every 3 months) and review sentiment (100% vs 71%). Main Idea's advantage is monetization model (free with in-app purchases vs subscription). On price, ratings volume, ads and in-app purchases 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. Main Idea sells 3 one-off in-app purchases and Learn Grammar 2nd Grade sells 11 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Learn Grammar 2nd Grade holds the better App Store score, 4.8 against 3.8. Both are backed by a comparable volume of ratings — 19 and 18 respectively. Written reviews point the same way: 71% of Main Idea's written reviews are positive against 100% of Learn Grammar 2nd Grade's.

UpkeepUpdate frequency

Main Idea ships an update every 3 months, Learn Grammar 2nd Grade every 10 days. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
Main Idea versus Learn Grammar 2nd Grade: the parameters behind the verdict, then further details
ParameterMain IdeaLearn Grammar 2nd Grade
PriceFreeFree
Rating3.8 (19 ratings)4.8 (18 ratings) — better
Positive reviews71.4% of reviews100.0% of reviews — better
Number of ratings19 — better18
Update frequencyEvery 3 monthsEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.211.0 — better
Further details — not scored
Size22 MB87 MB
Age rating4+4+
DeveloperJanine TooleClass Ace LLC

Customer experience

Main Idea

All ratings19 ratings
Positive63.2%
Neutral15.8%
Negative21.1%
Written reviews14 reviews
Positive71.4%
Neutral14.3%
Negative14.3%

Learn Grammar 2nd Grade

All ratings18 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Main Idea

One-time3
  • Upgrade to 2 Users$1.99
  • Access All Levels$2.99
  • Up to 10 Users$2.99
11 purchases

Learn Grammar 2nd Grade

Subscriptions11
  • Grammar 2nd Grade 3 Students7 Days trial$6.991 Month
  • Grammar 2 Monthly Parent7 Days trial$14.991 Month
  • Grammar 2nd Yearly - 1 Student7 Days trial$19.991 Year
Show 8 more
  • Grammar 2nd Yearly 2 Students7 Days trial$29.991 Year
  • Grammar 2nd Yearly 3 Students7 Days trial$39.991 Year
  • Grammar 2nd Yearly 5 Students7 Days trial$59.991 Year
  • Grammar 2nd Yearly 6 Students7 Days trial$69.991 Year
  • Grammar 2nd Yearly 7 Students7 Days trial$79.991 Year
  • Grammar 2nd Yearly 8 Students7 Days trial$89.991 Year
  • Grammar 2nd Yearly 9 Students7 Days trial$99.991 Year
  • Grammar 2nd Yearly 10 Students7 Days trial$109.991 Year

Questions

Is Main Idea free?
Main Idea is free to download, with in-app purchases available.
Is Learn Grammar 2nd Grade free?
Learn Grammar 2nd Grade is free to download, with in-app purchases available.
Which has better reviews, Main Idea or Learn Grammar 2nd Grade?
Learn Grammar 2nd Grade is rated higher. Main Idea averages 3.8 out of 5 from 19 ratings, while Learn Grammar 2nd Grade averages 4.8 from 18 ratings.
Do Main Idea or Learn Grammar 2nd Grade have ads?
Neither Main Idea nor Learn Grammar 2nd Grade shows ads.
Which is updated more often, Main Idea or Learn Grammar 2nd Grade?
Main Idea ships an update every 3 months, and Learn Grammar 2nd Grade every 10 days. Most recently, Main Idea was updated on October 24, 2026 and Learn Grammar 2nd Grade on October 24, 2026.

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