# Integrate Reading & Writing Basic 1 vs Del Mar USD

The clearest difference is update cadence: Integrate Reading & Writing Basic 1 at every 6 weeks against Del Mar USD's every 5 months. Integrate Reading & Writing Basic 1 also leads on iOS requirement (6.0 vs 13.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Integrate Reading & Writing Basic 1 ships an update every 6 weeks, Del Mar USD every 5 months. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Integrate Reading & Writing Basic 1 | Del Mar USD |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | Free | — |
| Size | 294 MB | 26 MB |
| Requires iOS | **6.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Woongjin Compass, Co., Ltd.](https://appshunter.io/developer/393294989) | [Catapult K12](https://appshunter.io/developer/1449934270) |

## What reviewers say

### Integrate Reading & Writing Basic 1

[App page](https://appshunter.io/ios/app/integrate-reading-and-writing-basic-1/id1249139772)

This educational app makes learning English enjoyable for students through interactive games and avatar customization. It allows easy sharing of progress with teachers via email, eliminating the need for complex learning management systems.

**Highlights:** Interactive English learning games, Avatar customization and point system, Email progress reports to teachers, Cross-platform PC and mobile use, Motivating learning activities

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

**In-app purchases:** none


### Del Mar USD

[App page](https://appshunter.io/ios/app/del-mar-usd/id1569048597)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Integrate Reading & Writing Basic 1 free?

Integrate Reading & Writing Basic 1 is free to download, with no in-app purchases.

### Is Del Mar USD free?

Del Mar USD is free to download, with no in-app purchases.

### Do Integrate Reading & Writing Basic 1 or Del Mar USD have ads?

Neither Integrate Reading & Writing Basic 1 nor Del Mar USD shows ads.

### Which is updated more often, Integrate Reading & Writing Basic 1 or Del Mar USD?

Integrate Reading & Writing Basic 1 ships an update every 6 weeks, and Del Mar USD every 5 months. Most recently, Integrate Reading & Writing Basic 1 was updated on October 6, 2026 and Del Mar USD on October 14, 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.*