# Main Idea vs Train Mind

The clearest difference is iOS requirement: Main Idea at 12.2 against Train Mind's 15.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Main Idea sells 3 one-off in-app purchases and Train Mind sells 4 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Main Idea | Train Mind |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (19 ratings)](https://appshunter.io/ios/app/main-idea-sentences/id895683482/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 118 MB |
| Requires iOS | **12.2** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Janine Toole](https://appshunter.io/developer/839832427) | [Malik Atif Masood](https://appshunter.io/developer/1821006455) |

## 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 |


### Train Mind

[App page](https://appshunter.io/ios/app/train-mind-brain-training/id6783008264)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $7.99 | per month |
| Yearly Plan | $19.99 | per year |
| Remove Ads Only | $2.99 | one-time |
| Unlock All Games Only | $3.99 | one-time |


## Frequently asked questions

### Is Main Idea free?

Main Idea is free to download, with in-app purchases available.

### Is Train Mind free?

Train Mind is free to download, with in-app purchases available.

### Do Main Idea or Train Mind have ads?

Neither Main Idea nor Train Mind 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.*