# Main Idea vs OneLearn SMS

The clearest difference is in-app purchases: OneLearn SMS at none against Main Idea's 3. OneLearn SMS also leads on update cadence (fortnightly vs every 22 months). Main Idea's advantage is iOS requirement (12.2 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Main Idea sells 3 one-off in-app purchases. OneLearn SMS asks for nothing beyond the download.

Main Idea ships an update every 22 months, OneLearn SMS fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Main Idea | OneLearn SMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/main-idea-short-texts/id916386000/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 41.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 22 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 46 MB |
| Requires iOS | **12.2** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Janine Toole](https://appshunter.io/developer/839832427) | [Novaa, Inc.](https://appshunter.io/developer/1618655699) |

## What reviewers say

### Main Idea

[App page](https://appshunter.io/ios/app/main-idea-short-texts/id916386000)

This app helps children in grades 2-5 improve their reading comprehension by teaching them to identify the main idea of a text. It uses a step-by-step, errorless learning approach with a reward system to keep kids motivated. Content is designed by educators and researchers, with reporting features for parents and teachers.

**Highlights:** Step-by-step skill building, Errorless learning approach, Engaging reward center, Parental review and reporting, Teacher and researcher-designed content, Timed levels for fluency

**Features:** macOS Compatibility

**In-app purchases (3)**

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


### OneLearn SMS

[App page](https://appshunter.io/ios/app/onelearn-sms/id6757727661)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Main Idea free?

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

### Is OneLearn SMS free?

OneLearn SMS is free to download, with no in-app purchases.

### Do Main Idea or OneLearn SMS have ads?

Neither Main Idea nor OneLearn SMS shows ads.

### Which is updated more often, Main Idea or OneLearn SMS?

Main Idea ships an update every 22 months, and OneLearn SMS fortnightly. Most recently, Main Idea was updated on October 24, 2026 and OneLearn SMS on October 25, 2026.

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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.*