# Main Idea vs Problem Size

The clearest difference is price: Problem Size at Free against Main Idea's $6.99. Main Idea's advantage is iOS requirement (12.2 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Problem Size is free to download; Main Idea costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Main Idea | Problem Size |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/main-idea-short-texts/id916391506/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | — |
| Monetization | Paid | — |
| Size | 28 MB | 394 MB |
| Requires iOS | **12.2** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Janine Toole](https://appshunter.io/developer/839832427) | [Sherry Chen](https://appshunter.io/developer/6793290593) |

## What reviewers say

### Main Idea

[App page](https://appshunter.io/ios/app/main-idea-short-texts/id916391506)

This app helps children in grades 2-5 improve reading comprehension by teaching them to identify the main idea of a text. It uses a step-by-step approach with visual guides and a reward system to build this skill incrementally. Designed by educators, it's suitable for both typical and special needs children.

**Highlights:** Step-by-step comprehension skill building, Incremental learning with unlocked levels, Frustration-free guided learning, Engaging reward center, Parental review and reporting, Content designed by teachers and researchers, Timed levels for fluency development

**Features:** macOS Compatibility

**In-app purchases:** none


### Problem Size

[App page](https://appshunter.io/ios/app/problem-size/id6793290591)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Main Idea free?

Main Idea costs $6.99, with no in-app purchases.

### Is Problem Size free?

Problem Size is free to download, with no in-app purchases.

### Do Main Idea or Problem Size have ads?

Neither Main Idea nor Problem Size shows ads.

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