# Main Idea vs Learn Grammar 2nd Grade

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.

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.

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.

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

## The numbers

| Metric | Main Idea | Learn Grammar 2nd Grade |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (19 ratings)](https://appshunter.io/ios/app/main-idea-sentences/id895683482/reviews) | **[4.8 (18 ratings)](https://appshunter.io/ios/app/learn-grammar-2nd-grade/id1570163547/reviews)** |
| Number of ratings | **19** | 18 |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 22 MB | 87 MB |
| Requires iOS | 12.2 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Janine Toole](https://appshunter.io/developer/839832427) | [Class Ace LLC](https://appshunter.io/developer/1303170818) |

## What reviewers say

### Main Idea

[App page](https://appshunter.io/ios/app/main-idea-sentences/id895683482)

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:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to 2 Users | $1.99 | one-time |
| Access All Levels | $2.99 | one-time |
| Up to 10 Users | $2.99 | one-time |


### Learn Grammar 2nd Grade

[App page](https://appshunter.io/ios/app/learn-grammar-2nd-grade/id1570163547)

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grammar 2nd Grade 3 Students | $6.99 | per month |
| Grammar 2 Monthly Parent | $14.99 | per month |
| Grammar 2nd Yearly - 1 Student | $19.99 | per year |
| Grammar 2nd Yearly 2 Students | $29.99 | per year |
| Grammar 2nd Yearly 3 Students | $39.99 | per year |
| Grammar 2nd Yearly 5 Students | $59.99 | per year |
| Grammar 2nd Yearly 6 Students | $69.99 | per year |
| Grammar 2nd Yearly 7 Students | $79.99 | per year |
| Grammar 2nd Yearly 8 Students | $89.99 | per year |
| Grammar 2nd Yearly 9 Students | $99.99 | per year |
| Grammar 2nd Yearly 10 Students | $109.99 | per year |


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*